Cswip 3.1 Question Paper
Cswip 3.1 Question Paper
Cswip 3.1 Question Paper
6} During welding sometimes the removal of residual stress are carried out by heat
treatment. What typical heating range?
a) 450*C
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b) 550-700*C
c) 700-800*C
d) 850-1000*C
10} Stress relief is not helpful in one of the following cases. Which one?
A) in improving resistance to stress corosion cracking
b) in dimensional stability after machining improving
c) in lowering the peak residual stress
d) in softening the steel
12} If submerged welding to be used to make butt welds, which would you be most
crical of.
a) The root gap tolerance
b) The angle of penetraion
c) The root face width
d) The gas cut finish
13} In MMA..?
a) DC-ve gives deeper penetration than DC+ve
b) AC gives greater deposition than DC-ve
c) DC-ve gives greater deposition than DC+ve
d) None of the above
16} What would you consider while calibrating MIG welding operation?
a) Amps, Volts, Travel Speed, Gas rate Flow
b) Amps, Volts, Travel Speed, Welding Consumable
c) Amps, Volts, Travel Speed, CTWD
d) None of the above
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19} DPI.?
a) Variables of Contrast of paint
b) Variables of Type of Developer
c) Detect Sub Surface defect
d) None of the above
24) You noticed an excess penetration in a C-Mn welded country pipe line, what could be the reason... ?
a) Wrong Electrode
b) Contaminated Electrode
c) Excess Root Grinding
d) Large Root Face
25) Which type of electrode is not best for welding Cross country pipe line?
a) Basic
b) Rutile
c) Cellulose
d) Iron powder
27) Which of the fllowing has the great effect of current during MIG/MAG welding.?
a) Arc Length
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b) Arc Voltage
c) Flow rate
d) WFS
29) The main problem with solution treatment of stainless steel is that?
a) Controlling the rate of lhe temperature rate
b) Controling the cooling rate
c) The length of the soak period
d) High risk of distortion
30) Which type of weld would you associate with the joint below
a) plug in a T joint
b) A plug weld in a edge joint
c) A fillet weld in a corner joint
d) An edge weld in a lap joint
31) Which of the following welds may be made in open corner joint?
a) Plug weld
b) Butt weld
c) Fillet weld
d) Any of the above
32) Reference to any inspection hold point duning manufacture will be contained within the?
a) Quality manual
b) QA procedure
c) Quality plan
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d) Standards
35)During a transverse tensile test, the first stage the specimen goes through is known as?
a) Plastic stage
b) Elastic stage
c) Deformed stage
d) UTS stage
36) When welding on a construction site which type of power source would be considered to be the unsafe?
a) 110 volts mains
b) 440 volts mains machine
c)Diesel engine driven welding generators processes
d) All welding machines have the same safety factors
c) Carbon dioxide
d) Hydrogen
38) With the DPI method of inspection, what should be crried out prior to applying the penetrant?
a) Apply developer
b) Wash off excess penetrant
c) Apply a thin coat of white contrast paint
d) Ensure the surface under inspection is free of all contaminants that may hinder penetrant access
to surface breaking flaws
40) Which of these tests would most probably be used for welder qualification on a plate butt weld using
13mm low carbon steel?
a) CTOD
b) Nick break test
c)Fracture Fillet test
d) IZOD
43) A welding procedure qualified in PA position may not be valid if welding needs to be done in PF?
a) The tensile strength of weld metal is more than 600 N/mm2
b) No NDT s done.
c) Impact requirements are specified.
d) No PWHT is caried out.
45) Which one of these joints would be more susceptible to lamellar tearing?
a) U butt
b) Vee butt
c) Double Vee butt
d) Compound weld
47) What is the minimum requirement of stress for hydrogen cracking to be applicable?
a) 0.5 N/mm2?
b) 0.5 joules of the yield
c) 0.5% of the yield of the material
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48) Preheating.
a) Is eways caried out around 200 C
b) Not greater than 50C
c) Is not generally required on medium carbon steel
D) Delays the cooling rate and improve fusion.
53) Preheating.
a) Increases weld zone yield strength and removes moisture.
b) Increases weld zone toughness and removes moisture.
c) Reduces weld zone UTS value and removes hydrogen.
d) None of the above.
56) Re is a tem,
a) Used to express maximum elastic point
b) Used to express maximum plastic point
c) Used to express UTS.
d) Used to express the elbngation value.
57) Necking
a) Is when the elastic point is reached.
b) Is when the proof stress is reached.
c) is when the specimen has gone past is elastic point and moving zone.
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61) The outpute characteristics of a typical SAW power source for less than 1000 amps?
a) Constant current
b) Constant voltage
c) Drooping
d) Pulsing
63) According to BS EN 22553 a weld symbol on the dashed line refers to,
a) On the arrow side
b) In the fish tail
c) Double sided weld
d) ldentification line.
68) Weldment in C-Mn steel made up of high heat input may show?
a) Longer HAZ
b) Wider HAZ
c) Narrow HAZ
d) Deeper HAZ
69) When measuring arc voltage, where should the Measuring instrument be kept?
a) Further away from the welder
b) As close to the return as possible
c) Further away from the retum load
d) As close to the welder as possible
70) An MMA electrode is designed as E430R type, what does "0" mean?
a) a.47 J at-20 C
b) b.47 J at 0 C
c) c.47 J at +20 C
d) d.47 J at-10 C
71) The main reason that hard stamping is prohibited in some structure that it may cause?
a) Work material
b) Corrosion initiation
c) Failure initiation point
d) Thinning df the material
b) Colour
c) Trade name
d) BS 499 coding
73) On a single-V butt weld the distance through the center of the weld from root to face is called
a) Reinforcement
b) Penetration
c) Throat thickness
d) None of the above
76) Which material property has the greatest infiuence on distortion that occurs in welded joints?
a) yield strength
b) co-effcient of thermal expansion
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c) tensile ductility
d) co-eficient of electrical conductivity
79) The hardest part of a multi-pass welded joint, assuming no post weld heat treatment has have taken
place is:
a) The HAZ of the cap
b) The HAZ of the root
c) The root
d) The cap
80) Which of the following welding process is not as classed as arc welding process?
a) electro slag welding
b) thermit welding
c) plasma welding
d) a and b
e) all of above
81) Which of the following elements if present in significant quantities in steel may lead to cold shortness
a) Sulphu
b) Phosphorus
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c) Silicon
d) Copper
83) Which of the following flame types would you expect to be used for the cutting of
mild steel?
a) Carburising flame
b) Oxidizing flame
c) Reducing flame
d) Neutral flame
84) Which of the following statemenis is true when using a flat characteristic power source?
a) The electrode is always dc -ve
b) The shielding is always pure argon
c) The wire feed speed remains constant
d) The electrode extension will have no effect on weld quality
85) When welding a double V butt joint with SAW process the presence of centerline porosity may be due
to
a) Damp flux
b) Contaminated joint preparation
c) Incorrect stick out lengths
d) All of the above
86) In accordance with BS 5135 what is the recommended minimum time allowed for the pre heat
temperature to equalize?
a) 2 Min for each 25 mm of parent material thickness
b) 5 Min for each 25 mm of parent material thickness
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88) Defects outside of the limits specified in a standard should always be...
a) repaired
b) reported to a senior person
c)assessed along the with other defects
d) all of the above
89) Which of the following is applicable of the heat treatment process of normalizing C-Mn steel
a) it always carried out below the lower critical limit
b) it is carried out to ensure the material has maximum tensile strength
c) it is caried out to ensure the material is to maximum ductility and malleability in preparation
d) it is carried out at approx. 910C for the purpose of grain refinement
90) An transverse tensile test from a weld procedure approval record test plate is used
to measure
a) the tensile strength of the weld
b) the tensile strenth of the joint
c) the stress strain characteristics of the weld
d) thestres strain characteristics of the joint
95) A correctly made tack weld should slope from the middle of the ends in order to
a) Aid better penetration at join up
b) Prevent porosity at join up
c) Reduce the electrode size required
d) Reduce the overall consumable consumption
96) Which of the following destructive test is not required for welder approval
a) Bend test
b) macro examination
c)Impact test
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d) Fracture test
97) Too large a diameter of filler rod should not be used to make a welded joint
because
a) excess reinforcement profile will be difficult to obtain
b) The included bevel angle will have to be reduced
c) Root fusion may be difficult to obtain
d) The gap setting will have to be changed
98) In SAW which of the following width to depth ratios would be likely to result in
solidification
a) 1:3
b) 4:1
c) 3:1
d) 1:1
99) The second run in three run butt weld using the stove pipe technique is known as
a) Filing run
b) hot pass
c) Inter run
d) Sealing run
c) Hardness
d) Penetration
102) What would be observed if a fillet weld were sectioned and macro etched
a) the grain of other beads is coarser than the final bead
b) The penetration and fusion into the root is very deep
c) each bead appears to be distinctly separate from the adjoining beads
d) The grain structure remains same in all passes
103) The different grain structure between the weld deposit and the base metal can be determined by
a) Face bend test
b) Root bend test
c) Hardness test
d) Etching test
105) What happens to the mechanical properties of the steel if the carbon content is
increased to 0.5%?
a) Material becomes softer
b) Malleability is increased
c) Tensile strength is increased
d) Ductility is increased
106) When a metal is subjected to a fluctuating load,a condition of a cylic stressing can be set up which
eventually can result in structural breakdown known as
a) Tensile failure
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b) Fatigue failure
c) Yield failure
d) Shear failure
108) When depositing weld metal fusion will takes place at the sides of the joint resulting in an admixture
between weld metal and parent metal. this alloying effect is known as
a) Diffusion
b) Absorption
c) Dilution.
d) Migration
110) Low alloy steels having a hign caroon equivalent before welding will require
a) A reduction in carbon content
b) High pre heat temperature
c) Low pre heat temperatures
d) No pre heating
112) An electroslag weld requires what heat treatment to improve the grain structure
a) Annealing
b) Stress relieving
c) Normalising
d) Quenching and tempering
116) The permanent backing material for MMA welding of low carbon steels should be
made from
a) Copper
b) low carbon steel
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c) QT steel
d) Cast iron
125) Below which is the correct terminology? (Contact Tip Workpiece Distance)
a) CTWD increases, Voltage decreases
b) CTWD decreases, Current decreases
c) CTWD decreases, Voltage increases
d) CTWD decreases, Current increases
a) Damp electrodes
b) Excessive current
c) Change in electrical settings
d) All of the above
d) 90 degree
c) MAG
d) SAW
147) Which of the following electrode coding in BS EN E50 3 1NI B 140 0 1 H5, what does the 3 represent
a) a minimum charpy value of 30 joule
b) a minimum impact value of 47 joule
c) a minimum impact temperature of -30°C at a given joule value
d) none of the above
148) What would be the effect in haz if the heat input use higher than specified in wps?
a) longer haz
b) wider haz
c) deeper haz
d) narrow haz
a) iridium
b) silica
c) cerium
d) titanium
149) When MIG welding aluminum alloy in the overhead position which current type would be expected to
be used.
a) AC
b) 2.DC-ve
c) 3.Drooping
d) 4.DC +ve
149) Which of the following test would you normally expect a test house to use for the assessment of HAZ
hardness, for procedure approval in the UK?
a) Rockwell
b) 2.CTOD
c) 3.Brinel
d) 4. Vickers
150) Which of the following defects are not associated with the MMA (SMAW) welding process?
a) Isolated pores
b) Lack of fusion
c) Undercut
d) Tungsten inclusions
151) In SAW a higher current or in the case of multiple electrode systems. AC is often preferred to:
a) Avoid the problem of lack of fusion
b) Avoid the problem of excess penetration
c) Avoid the problem of arc blow
d) Avoid the problem of dilution
152) On some applications (i.e. Cladding operations) by SAW, DC electrode negative is needed to:
a) Reduce penetration and dilution
b) Increase penetration and dilution
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153) What is the mode of metal transfer for the TIG (GTAW) welding process?
a) Spray transfer
b) Globular transfer
C)Dip transfer
d) None of the above
154) What would the effect be if the polarity were changed from DC+Ve to DC-Ve?
a) None
b) Greater deposition rate
c) Greater penetration
d) Less deposition rate
154) You notice that a welder is using an unapproved WPS for production tack welding carbon steel, what
action would you take?
a) Have the tack removed and MPI the weld preparation for cracking
b) Nothing as it is only tack welds and they will probably be removed anyway
c) Nothing as long as the WPS Covered the material type, wall thickness and diameter
d) Give him the correct approved one and allow him to continue as long as the welding
consumables were the correct type
155) In welder qualification testing of 20 mm plates, why are side bends used instead of root and face
bends?
a) They are easier to produce
b) The testing equipment cannot handle thick root/face bends
c) Root defects are not important for welder qualification
d) They give more accurate indications
157) Why is it essential to clean the surrounding parent metal adjacent to the weld metal made by MMA
(SMAW), which is to be ultrasonically tested?
a) Sound waves will not travel through weld
b) Remove any rust
c) The spatter will impade the contact probe and the parent material surface
d) Spatter will reflect the back wall echo signal and give indications
158) Which of the following would not be required to be checked before welding?
a) The welding consumables
b) The welder qualification
c) Calibration of welding equipment
d) The workshop humidity
159) According to AWS 2.4 where does the symbol go for welding on the arrow side?
a) Below solid line
b) Above solid line
c) Depends on the joint
d) Always weld other side arrow is pointing
161) Root and face bends an 8mm thickness weld require testing. The specimen are cut to 20mm wide the
code calls for a 4t bend which one of the following former should be selected for testing.
a) 80mm radius
b) 80mm diameter
c) 32mm radius
d) 32mm diametet
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162) One of the factors used to avoid HAZ hydrogen cracking is to reduce the influence of hydrogen by
checking the amount of moisture present in the shielding gas by the dew point temperature. The
dew point temperature should be
a) Above 5°C
b) Below 60°C
c) Below 30°C
d) Above 27°C
162) How is preheat for tack welds during assembly and fit-up determined?
a) By the weders as they have extensive knowledge
b) The fabricaton specification/WPS will give the requirements
c) The fabrication drawing will give all the information
d) Any temperature wil do as it is only a tack weld
163) Dunng Inspection of a fillet weld you notice slag in the toes of the weld, what action will you take?
a) As a fillet weld does not need to be strong slag will not be a problem
b) Measure the slag if it is less than 3mm it will not be a problem
c) Have the welder remove the slag as this could mask any discontinuities
d) Tell the welder to leave the slag in as it will add strength to the weld
164) IN a transverse WELD tensile test, If the break was in the parent material, the sample would be
a) Rejected
b) Acceptable if the UTS is equal to or greater than the specified UTS of the plate
c) Retested
d) Acceptable if the UTS 80-90% of the specified UTS of the plate
165) Charpy testing is caried out on a welding procedure test plate because?
a) It gives an indication of the through thickness ductility (in the Z direction)
b) The impact test results can be used to verify that the material has not been adversely affected by
the heat of the welding
c) It give an indication of the materials elongation properties
d) It gives a quick indication of the weld quality for welder qualification tests
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165) When examining a completed bend test the angle of the bend was found to be 175Deg. the testing
specification calls for the sample to have been fomed through 180 Deg.
a) The bend should be considered as failed
b) They should be sent to 180deg then re-examined
c) They should be acceptable as the reduction in angle is due to material spring back
d) They should be rejected as the angle is not close enough to be acceptable
166) Which one of these values would be more susceptible to lamellar tearing?
a) Greater than 20%
b) Less than 20%
c) 30% above
d) They would all be susceptible
169) When MMA welding what will be the effect on the weld if the electrodes was changed fram DC-ve tu
AC
a) None
b) It would have been easier for the welder to strike the arc
c) It would slighty increase the depth of penetration
d) It would give less penetration
170) You find that contractor has carned out radiography as per 10 % contractual percetage requred by the
speciication / Code. The specification also insists that an addtional 2 welds are radiographed for
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every weld that has failed. One of the pipe spools had an unacceptable defect, which the contractor
has ignored and radiographed another weld in tis place, which is acceptable, what would your
course of action be?
a) As long as the other radiographed butt weld is acceptable its ok as the 10% contractual
percentage required by the specification/code has been satisfied
b) This is usual practice as 10% NDT is not really important
c) Review the onginal failed weld and insist that they have the additional 2 welds radiographed
d) Review the original failed weld and have it repaired, radiographed. Then I would insist that they
have an additional 2 welds radiographed
171) During post weld heat treatment what is the sequence for the PWHT chart?
a) Resticted heating rate, soak time, unrestricted cooling rate
b) Un Restricted heating rate, Restricted heating rate, soak time, restricted cooling rate,
unrestricted cooling rate
c) Restricted heating sate, soak time, restricted cooling rate
d) Restricated hesting rate, unrestricted heating rate, soak time, restricted cooling rate,
unrestricated cooling rate
171) Hydrogen induced old creaking (HICC) is often referred to by other names that desoribes verious
characteristics of hydrogen cracks, which one of the following would not be correct term as applied
to HICC?
a) Cold creking
b) Deleyed Creking
c) under-bead creking
d) stepped like creking
172) Slag line found in MMA welds are usually associated with:
a) The voltage being too low
b) The Open circuit current being too high
c) Improper cleaning between weld runs
d) Low open circuit voltage
175) During production welding, is welder allowed to adjust the welding current?
a)Yes, he can adjust the current, If he is qualified
b) No, except the welding supervisor approves
c) No, Current must not be adjusted
d) None of the above
b) Kilo Volts
c) Joules
d) Electron Volts
d) To speed up inspection
185) The correct term for a joint prepared on one component only is
a) A bevel butt
b) A'J butt
C) A'K butt
d) All of the above
190) If arc strikes are found on carbon steel (Ceq of 5%), what undesirable grainstructure may be present?
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a) Perlite.
b) Martensite.
c) Bainite.
d) All of the above are undesirable grain stuctures in constructional steels.
191) Most metals expand when heated, the change in length is expressed as:
a) Thermal conductivity.
b) Modulus of elasticity.
c) Coefficient.
d) Yielding.
192) Name the fourth weld process crack which has a totally different formation mechanism to HICC (H2
induced cold crack), solidification cracking and lamellar tearing
a) Liquation cracking.
b) Reheat cracking.
c) Crater cracking.
d) Hot tearing.
193) Which arc welding process technique is likely to be used to repair localized porosity in a weld;
a) MMA
b) Mechanised arc welding.
c) Sub Arc.
d) All of the above
195) Which of the following is applicable if the heat input is high during a deposition of weld metal using
the MMA process
a) low toughness
b) high susceptible Of hydrogen entrapment
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c) high hardness
d) high susceptible of lack of fusion
197) Which of the following welding process uses a resistive heating system to achieve weld metal
deposition?
a) MMA
b) Resistant spot welding
c) Electro-slag
d) Friction welding
199) Which of the following defects will have more severe effect on the load bearing condition?
a) Undercut
b) Incomplete filled groove
c) Irregular width
d) Excess penetration
201) Preheating may not be necessary during welding in which of the following cases
a) Welding of cast iron
b) Welding of low alloy steels
c) Welding of Manganese steels
d) Welding if austenitic stainless steels
203) Carbon dioxide shielding is NOT suitable for MAG Welding of Austenitic stainless steel
a) Carbon di oxide is heavier gas
b) Carbon dioxide is an actve gas
c)Heat content of these gas is very high
d) There is Insufticient gas coverage
204) A visual examination arter welding will reveal which of the following
a) overlap
d) internal porosity
c) weld inclusions above the hot pass
d) under bead cracks
205) In SAW process if voltage and current is increased and travel speed is decreased, What will be the
effect in the profile
a) Wider weld.
b) Higher weld reinforcement.
c) Concave weld surface.
d) Both a and b
209) When a longitudinal load is put on a lap joint, the stress set up is normally;
a) Shear stress.
b) Tensile stress.
c) Compressive stress.
d) Residual stress.
210) When using the GMAW process for aluminium the liner should made of
a) nylon
b) graphite
c) steel.
d) Teflon
211) Which electrodes are very susceptible to causing porosity in the deposited weld if long arc employed
a) basic
b) cellulosic
c) rutile
d) all of above
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212) A lack of root penetration difference from a lack of root fusion defects in which of the following
respects
a) they are the same and do not different
b) lack of root penetration shows two straight edges
c) lack of root fusion shows one straight edges
d) both b & c are true
213) Which is the following may increase the risk of HAZ cracking the welding in carbon manganese steels
a) slow cooling after welding
b) low moisture content in the electrode covering
c) use of a steel grade with a low CEV
d) use of a low heat input
216) If magnification is used for visual inspection in according with BS EN IS0 17637 it should be magnified
how many times
a) 5-10
b) 2-5
c) 2-10
d) as many as required finding the defects
216) Which of the following influence the amount of distortion on a component during and after welding?
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a) heat input
b) lack of restraint
c) material properties
d) all of above
217) In a single pass weld, which of the zone in which longitudinal residual stress are tensile is,
a) Independent of the weld width
b) Narrow then the weld metal
c) Same width as weld metal
d) Wider than the weld metal and HAZ
219) In general thicker materials required higher pre heat temperatures, but for a given CEV and arc
energy heat input, they are likely to remain similar for wall thicknesses up to approximately
a) a.10mm
b) b.20mm
c) c.40mm
d) d.50mm
d) a and b
e) all of above
222)Chromium, when added to steel as an alloying element, has the effect of making the alloy more:
a) Ductile.
b) Plastic.
c) Hardenable.
d) Malleable
226) Which one of the following codes/ standards is not a qualfication code?
a) ASME section IX
b) AWS D1.1
c) EN IS0 15614
d) ASME B31.3
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227) Arc welding of some machine fittings are found to be cadmium plated. As a welding inspector you
should
a) Permit to proceed
b) Permit to proceed with fume extraction
c) Stop the operation at once
d) Advice welder to proceed after some time
228) The differences blw BS EN 22553 and AWS 2.4 welding symbols are
a) Both having same rule for depicting weld all around
b) Both having same rule for depicting other side
c) Both having same rule for depicting sequence of operations
d) Both having same method for depicting welding process
229) In fusion weld which of the following has the highest tensile strength?
a) Weld metal
b) Parent metal
c) Heat affected zone
d) Fusion Zone
230) Which of the following would require highest preheat if all other factors were same?
a) MMA weld with Cellulbsic electrodes
b) MMA weld with Rutile electrodes
c) MMA weld with Basic electrodes
d)MAG weld with solid wire
231) Why would visual inspection of the excess weld metal at the bottom of the cross country ppeline be
important
a) Its the most difficut area to weld
b) Its the difficut part of pipe as it is near the ground
c)Welder aways forget to weld at bottom
d) Its most dificut area to radiograph
232) Shinkage stresses are greater when welding metals that have
a) a high coefficient of thermal expansion
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b) no restraint
c) a low coefficient of expansion
d) a high meting point
235) When comparing properties of plain carbon steel and austentic stainless steel foilowing
measurements true?
a) Carbon steel have better thermal conductivity
b) Stainless steel have low expansion and contraction
C)Carbon steel have higher expansion rate in the Z direction
d) Stainless steel have lowest chromium
236) What are the possible results of having a too lower heat input
a) An increase in hardness, lower yield strength and lack of fusion.
b) A reduction in toughness, hydrogen entrapment and an increase in hardness.
c) Entrapped hydrogen, an increase in hardness and lack of fusion.
d) Entrapped hydrogen, a reduction in carbon content and lack of fusion.
237) Which of the following defect could occur when Welding with autogenous tig welders of non de-
oxidized steel
A) undercut
B) porosity
C) tungsten inclusion
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D) lack of fusion
238) When referring to Austenitic stainless with one of the following statement would be correct
A) it is magnetic under certain conditions
B) it has a low coefficient of thermal expansion and high coeficients of thermal conductivity
C) it has high coefficient of thermal expansion and low coeficients of thermal conductivity
239) The use of fiux with gas shielded metal arc welding allowe
a) sheet metal to be welded
d) less diution of the weld by the parent metal
c) aluminium to be welded
d) a stable arc when using hign current densities
240) In the GTAW process the use of pulsed current helps in achieving which of the following?
a) electron cleaning effect and penetration
b) Controlling heat input and penetration
c) Controlling lack of sidewall fusion and heat input
d) Controlling spatter and penetration
243) A welder qualified in the PG position would normally be qualified for welding:
a) All diameters of pipe.
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244) The welder has increased electrode stick out length of the SAW set, what would be the effect on the
weld
a) No effect
b)wed width would be narrow
c)penetration will be increased
d) deposition rate would be greater if the wire speed rate is also increased
245) Which heat treatment methods can be applied to a material to give maximum toughness?
a) Normalising
b) Tempering
c) Annealing
d) Both A &B
247) Which of the folowing best describes a semi automatic welding process?
a) The welder is responsible for the arc gap and travel speed.
b) The welder is responsible for the travel speed only.
c)The welding plant controls both travel speed and arc gap but under Constant supervision.
d) The welding plant controls both travel speed and arc gap, no Supervision required.
248) What action must the welding inspector request if a lamination is found extending into the bevel face:
a) Cut back the material until a lamination free area is found.
b) Accept the bevel unless the lamination exceeds 5mm.
c) Place a sealing run over the lamination and dress flush, then make the weld as normal.
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d) Action to take will depend on the agreed specification (or welding engineer client if specification
does not state the action).
250) which of the following weld process would you expect to use a collet
a) TIG
d) All of the above
c) MMA
b) MIG
251) which of the following is a method to accurately measure the root radius of a charpy or izod specimen
a) Use a pyrometer
b) Use vernier calliper
c) Use a machine called shadow graph
d) Use a densitometer
253) When MMA welding what will be the effect on the weld if the electrode was changed from DC +ve to
AC
a) None
b) Lower deposition rate
c) It would be lesser penetration or slight increase in deposition rate
d) The arc would become unstable
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254) A repair has been made using MMA on a double V butt weld on a 10 m diametertank. The defect
repaired was lack of penetration and it had been excavated with a disc grinder prior to repair. After
repair it was determined that the wrong electrodes had been used. What action should the inspector
take:
a) Have the repair area ground and re-repair.
b) Accept the work if the electrodes were the same flux type.
c) Heat treat the area.
d) Consult the senior inspector or welding engineer if the specification or Procedure does not cover
the course of action.
255) Flame cut edges would normally be required to be ground back to a distance specified in a procedure
because
a) If the HAZ is left on the prep it may result in weld decay in service
b) The HAZ would have become sensitised
C) There is a strong potential for hardening in this region
d) to reduce weight loading on the completed structure
257) During visual inspection of a fillet weld with even leg lengths of 15 mm and throat measurement of 9
mm. A cross section is not avaikable. The weld profīie is
a) Concave
b) Convex
c) Mitre
d) Not able to determined
259) You should always refer to the higher authority for guidance when
a) Cracks appear during welding
b) The welder will not follow your instructions
C) Instructions are missing in the specification or contract documents
d) All of the above
262) Which of the following is a suitable shielding gas for FCAW of stainless steel CAW of stainless
a) 100% argon
b) 70% argon+30% He
c) Argon+5% Hydrogen
d) Argon+20% CO2
263) The maximum hardness in the HAZ of a steel will increase if the
a) Heat input is increased
b) CEV is increased
c) Joint thickness is decreased
d) All of the above
268) The weld metal deposits of MMA electrodes achieve its mechanicals strength through
a) The core wire
b) The flux coating
c)Iron powders in the flux coating
d) none of the above
269) what constituent is needed in the coating of an electrode to prevent the formation of porosity in the
welding of a rimming steel
a) Iron powders
b) Calcium fluoride
c) Silicon
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d)Calcium carbonate
270) A steel described as QT will nave improved tensile properties because it has
a) Had control of chemical composition
b) Been heat treated
c) Been quality tested
d) Been vacuum melted
271) In submerged arc welding the use of excessively high voltage would result in
a) Insufficient flux melting
b) Excessive fiux meting
c) slag removal difficufties
d) Spatter
272) Cellulosic electrodes are often used when welding the root pass of pipes in the field because
a) Hydrogen control is needed
b) There are iron powders in the electrode
c) Higher arc voltage can be obtained
d) Shorter arc length can be obtained
273) which of the following process uses the keyholing system of fusion
a) Friction welding
b) Diffusion bonding
c)Electron beam welding
d) Autogenous TIG welding
274) When MMA welding low carbon steel which electrode will give the greatest deposition rate
a) Hydrogen controlled
b) Cellulosic
c) Rutile
d) Iron powder
275) The voltage necessary to maintain an arc during metal arc welding is termed as
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276) Austenitic stainless steels electrodes are generally smaller in length than mild steel electrodes
because
a) High amperage is used
b) Shelf life is decreased
c)Their electrical conductivity is less than that of steel
d) They are more expensive
277) Tempering is often carried out to regain toughness after which of the following process
a) Annealing
b) Normalising
c)Hardening
d) Stress relieving
279) Repair welding is often more difficult than production welding due to.
a) The materials being ingrained with inservice contaminants
b) Restricted access within the repair area
c) The possible position of the weld repair
d) All of the above
282) Flame cut preparation may during welding increase the likelihood of
a) Cracking
b) Misalignment problems
c) Inclusions
d) All of the above
283) With reference to a root penetration bead you would certainly assess
a) Root fusion and penetration
b) Root concavity
c) Burn through
d) All of the above
287) In weldability of carbon steels which of the following statements are true?
a) Joint configuration influences weldability.
b) Increased carbon contents makes welding easier.
C) Thicker plates can be welded easily than thinner plates.
d) All of the above.
288) Which of the following elements has the most pronounced effect on weldability?
a) Sulphur
b) Chromium
c) Molybdenum
d) Carbon
291) Preheating.
a) Increases weld zone yield strength and removes moisture
b) Increases weld zone toughness and removes hydrogen
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293) NDT?
a) Prods are associated with the MPI method
b) Prods are associated with UT method
c) Prods are not associated with any NDT method
d) prods are commonly used for the inspection of welds
294) Distortion?
a) A single V butt weld welded trom one side highly restrained will have low distortion and low
residual stress.
b) A single V butt weld welded from both sides with balanced welding will have high distortion and
low residual stress.
c) A single V butt weld welded from one side with no restraint will have low distortion and low
restraint.
d) A single V butt weld welded from one sIde, highly restrained, will have low distortion and high
residual stress.
295) In a tensile test the maximum load recorded was 134 KN and the width of the Specimen was 2.5 cm,
the thickness was 10 mm. What would be the UTS and elongation be?
a) a.530 N/mm2, 20% elongation.
b) b.536 N/mm2 and elongation cannot be calculated.
c) c.536 N/cm2 and elongation cannot be calculated.
d) d.5.36 KN/mm2 and elongation cannot be calculated.
296) For 80 mm diameter, 12 mm thickness C-Mn steel pipe what would be the correct technique used?
a) DWDI using Ir-192.
b) SWSI using Co-60.
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298) When considering thermal cutting local hardening can be reduced by:
a) Increasing the cutting speed.
b) The use of propane as a fuel gas.
c) Pre heating the material to be cut.
d) All of the above.
299) Welding procedures may require welds to be deposited at a controlled rate heat input. High heat input
would:
a) Have poor profile
b) Have larger grain size
c) Have high hardness in the HAZ
d) Have low elongation properties
303) Segregation within an ingot maybe detect by which of the following technique
a) ultrasonic
b) Sulphur painting
c) Visual examination
d) all of the above
304) Low temperature heating giving rise to the small readjustment in the posilion of the atoms is known
a) recrystallsation
b) recovery
c)grain growth
d) annealing
305) If too great forging reduction is attempted in one operation may occur
a) preferred orientation of the grains
b) inadequate grain growth
c) forging buts
d) forging laps
307) You are to oversee the arc welding of Some machined fittings and find they cadmium plated. Would
you:
a) Permit it to proceed
b) Permit it to proceed with fume extraction
c) Stop the operation at once
d) Advise the welder to drink milk and proceed
308) According to AWS2.4 where does the symbol go for welding on the arrow side?
a) Below solid line
b) Above solid line
c) Depends on the joint
d) Always weld where the arrow is pointing
309) Many of the meters, instruments & controls of the welding machine are not working proper and their
calibration certificate are also out date. What will you do?
a) Permit welding to proceed with no further action
b) Use a MAP separate measuring instrument and permit welding
c) Stop welding until corrective measures are completed to rectify the situation
d) Being welding and then report to their management when time is available
312) A plug weld and a slot weld differ in which of the following
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315) A code gives the acceptance standard for exscess weld metal "h" as: h< 1mm+ 0.1 b max. 5 mm
where "b" is thie width of the cap. for which of the following altuations is the escess weld metal
acceptable.
a) b=15 H=3.0
b) b=22 H=3.0
c) b=28 H=4.0
d) b=40 H=5.4
316) How are the tack weld lengths during assembly and fit-up determined?
a) By the welder as they have extensive knowledge
b) As the wps will give minimum tack length requirement
c) As the welding drawing will give the information
d) As the specification weld do
319) Very high deposition efficiency electrodes (180%) have what disadvantages
a) higher yield strength of weld metals
b) higher level of hydrogen in the weld metal
c) operation is limited to only some positions
d) they produce very hard weld metal
320) Which of the following would you not need to check in a welding consumable store?
a) the oven temp.
b) Quarantine consumables
c) Calibrations of the ovens
d) the humidity
321) What is the main cause of undercut is:
a) current too low
b) excessive travel speed
c)excassive OCV
d) excessive amps
322) Vollage and amperage meter have been removed from MIG/MAG(GMAW) calibration invalid, the
equipment should be
a) quarantined
b) only used for tack welds
C) only used if validaled
d) monitored density by the welding inspector for amperage and voltage
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323) Rutile electrodes are often sold packed in cardboard box Covered with a plastic fim. if upon you found
they were damp and the ends were rusting what course of action would you recommended?
a) Use them as a rutile electrode for only purpose welding
b) Re dry at 120 degree C and issue to the shop floor
c) Quarantine them
d) Only use them for tack welding
324) Which of the following is most apt to render the post-emulsification test ineffective:
a) Too long of a penetrant time.
b) Too long of a developing time.
c) Too long of an emulsihying time.
d) None of the above.
326) In general it is not easy to mechanise the MMA welding process because:
a) Short electrode length, the control of the arc length and the process uses A flat characteristic.
b) Short electrode length, the control of the arc length and flux coverings.
c) The control of the arc length, stop start problems and short electrode length,
d) Flux coverings, short electrode lengths and relationship between amps And volts.
327) Clustered porosity found internally in the body of a C-Mn in the MMA welding is usually associated
with
a) poor inter pass cleaning
b) the open circuit curent being too high
c) poor stop/start technique or damp electrode coating
d) low open circuit voltage
330) The soak temperature specified by code depend on the type of steel, low allov steels (such as cr-mo
steels used for elevated temperature service) require temperatures typically in the range of
a) 700-960 c
b) 900-1100 c
c) 600-650 c
d) 700- 760 c
332) You find several unacceptable welds and reject them the welding supervisor indicates they are
acceptable be signs then off and request NDT what action would you take.
a) nothing as be is a welding supervisor and knows a great deal above
b) Raise the issue with the QC department supervisor
c) it is not my problem us be has signed them off so i will not be blamed
d) Look at the NDT results and if they know reasonable I would accept them.
d) all of above
334) In the GTAW process the use of pulsed current helps in a achieving which of the following?
a) electron cleaning effect and penetration
b) controlling heat input and penetration
c) controlling lack of sidewall fusion and heat input
d) controlling spatter and penetration
336) Loss of ductility is often one of the reasons for a hydrogen crack to occur. What will happen to
ductility we increase tensile strength?
a) Ductility will be greater
b) Ductility will not change
c) ductility will be less
d) Ductility is tensile not affected by tensile strength
339) In acccordance with BS 2901 which of the following is classified as triple deoxidised filler wire?
a) 17 wire
b) 18 wire
c) 15 wire
d) All
340) A welder is working on PA, which mechanical test get affected when he changes to PF?
a) Tensile test
b) Hardness test
c) Impact test
d) All
341) . What destructive test would be required to ascertain the likelihood of cracking in the HAZ of a weld?
a) Nick break
b) Side bend test
c) Charpy impact
d) Macro test
342) What is the main purpose post flow function on TIG welding Machine?
a) Avoid tungsten electrode contamination
b) Cool the weld during solidification
c) Give the welder time to adjust the welding condition
d) Purge the gas line
c) turned in a lathe
d) surface finish is not important
345) Which one of these joints would be more susceptible to lamellar tearing
a) U butt
b) Vee butt
c) double vee butt
d) compound weld
346) Which of the following is considered the main restriction of the radiography method of NDT
a) The detection of planer defects oriented parallel to the beam direction
b) The range of material thickness it can be used for
c) Can't be used for remote site work
d) The range of material type it can be used for
352) In welder qualification testing of 10mm plate, 2 roots and 2 face bends were tested, 1 root bend failed.
What course of action would you follow?
a) Acceptthose as 75% were acceptable, you are allowed one failure
b) Two more root bend should be prepared and tested
c) Two more root and 2 more face bends should be prepared and tested
d) retest the welder
353) When welding vertically up with MMA process weaving is sometimes restricted to 2.5 x electrode
diameter, this restriction is mainly applied to
a) reduce the overall width of the weld
b) Limit the heat input into the joint
c) reduce the no. of electrode in the joint
d) Reduce the time require to finish the weld
354) What is the answer for the throat thickness of a 3/4 inch fillet weld is?
a) 27.5 mm
b) 24 mm
c) 13.3 mm
d) 12.5 mm
a) Excessive penetration
b) Change in weld metal composition
c) Narrow weld width
d) Excessive bead profile
357) Which is the most commonily used isotope for radiographic examination of welds?
a) ytterbium 169
b) iridium 192
361) Welding a single V butt with laminations showing on the side wall may give rise to:
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a) Lamellar tearing
b) Solidification cracking
c) Martensite
d) Undercut
365) What five parameters would be checked when calibrating welding equipment for mechanized MAG
welding:
a) Joint set up, flux coating. polarity, travel speed and amps/ volts
b) Amps/ volts, WFS, gas flow rate, polarity and travel speed
c) Amps/ volts, WFS, wire diameter, polarity and travel speed
d) Electrode stick out, WFS, amps/ volts, polarity and wire diameter
367) A crack running along the centre line of a weld bead could be caused by..
a) use of damp flux
b) lack of preheat
c) arc voltage being too high
d) weld bead being too deep and very narrow
368) What type of power source characteristic is required for manual welding?
a) Constant voltage
b) Flat Characteristic
c) Drooping Characteristic
d) Motor Generator
369) One of the advantages of a muit-pass MMA weld is that it generally produces a:
a) High tensie strength
b) High degree of ductiity
c)Coarse grain structure
d) Fine grain structure
371) which of the folowing weiding process would you expect to give the highest heat input when using
typical parameters?
a) Shielded metal arc welding
b) Manual Metal arc welding
c) Submerged arc welding
d) Tungsten Inert gas welding
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372) A mitre fillet weld has a design throat thickness of 12 mm. What is the leg length?
a) 19.6
b) 12.8
c) 16.8
d) 10.8
373) The number 136 is shown at the tail end of a weld symbol reference line. According to BSEN 22553
what does the number indicate?
a) FCAW
b) MIG/MAG
c) MMA
d) TIG
375) When using a welding procedure specification what other document is in conjunction with the
procedure?
a) PWPS
b) WQT
c) WPQR
d) WPTR
377) Which of the following has the greatest effect on the finished profile?
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a) Included angle
b) Torch angle
c)Open circuit voltage
d) Polarity
378) Tungsten electrodes used for TiG welding of C-Mn steel contains a smallpercentage of,
a) Silica
b) Cerium
c) Iridium
d) Titanium
379) A pipeline is to be laid across country; which of the following method could be used to detect root
defects?
a) MPT
b) RT
c) UT
d) Both b and c
382) During welding you observe that the welder is weaving excessively high, which property will be.
deteriorated because of this?
a) Percentage elongation
b) Impact properties
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c) Chemical composition
d) All of the above
387) What element may cause carbon steel to suffer cold shortness?
a) Phosphorous
b) Martensite
c) Manganese
d) Silica
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392)Hardness testing,
a) Is carried out to assess the likelihood of solidification cracking.
b) Helps in assessing the susceptibility of HICC.
c) Is a quantitative test to help assess equal values of hardness.
d) Is carried out during welder qualification tests.
398) Concerning weldability of carbon steels which of the following statements is true?
a) Material grade influences weldability
b) Increasing carbon ontent makes welding easier
c)Thicker plates can be welded more easiy then thinner plates
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399) Which of the following arc design is preferred in cyclic loading condition?
a) View A
b) View B
c) View C
d) View D
400) To prevent HIC, with increasing CEV what measures may be taken?
a) Use higher pre heat
b) Use post weld heat treatment
c) Use low hydrogen electrode
d) All of the above
401) Which one of these electrodes produces the highest level of hydroge
a) Cellulosic electrodes
b) Rutile
c) Basic
d) Iron powder electrodes
402) What course of action should beTeken upon finding a welder using incorect welding consumables?
a) report the incident and recordall relevant information
b) Allow welding to proceed if the workmanship is good
C) None if the tensile strength of the consumable is the same as the approved
d) Change the electrode for the Correct type and continue welding
403) During root welding which of the following would be the main cause of burn through?
a) The current is too high
d) Root face is too large
c) Preheat not used
b) The root gap is too small in accordance with WPS
a) Remove moisture
b) Delay the cooling rate
c)Remove hydrogen
d) Improve fusion
405) In order to prevent hydrogen cracking which of the following would need to be mainly considered?
a) Material thickness
b) Welding position
c) Carbon equivalent value
d) Joint design
410) in NDT...?
a) In RT, 680 dia, 20mm thickness DWDI is used
b) In RT. 70mm dia, 60mm Thickness, DWSI is used
c) In RT, 85mm dia, 25 mm Thickness, DWSI is used
d) A will be used by DWDI & DWSI
411) In RT...?
a) Radiography will show lack of fusion as dark straight line in one side and other side bright
b) Radiography will show undercut as dark straight line one side
c) Radiography will show lack of root penetration in one side bright and other side dark
d) None of the above
412) In contract they said 20% RT and every one failure 2RT required and you bold find one failure. What
woud you your acion.?
a) You agree and you will show substituent the joirt
b) You disagree and leave the Joint
c) You will ask more % of RT for Quality Assuranoe
d) None of the above
414) Under normal contract conditions weld procedure approval tests for pipework are
a) Mandatory
b) Depends on site and weather conditions
c) Depends upon contractor confidence in his procedure
d) Only required when MMA welding is used
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416) Load 180KN, 40mm length, 80mm thickness. Calculate UTS & Elongation?
a) 50 N/mm² & Elongation 20%
b) 56 N/mm² & Elongation cannot be found
c) 56 N/mm² & Elongation can be found
d) 56 N/mm² & Elongation 10%
419) Cross country pipeline is going to be laid. To find the root defects, which NGT you go for?
a) MPI
b) UT
c) RT
d) both (b) & (c)
420) When ac only is required for welding, the power supply unit is almost always:
a) A transformer, rectifier and a means to change the current
b) A transformer, inverter and a means to change the current
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422) In accordance with BS 5135 which of the following is applicable for scale "c" with regards to hydrogen
content per 100g of deposited weld metal?
a) > 15 ml
b) > 15 ml < 25 ml
c) > 10 ml < 15 ml
d) > 5 ml < 10 ml
423) Which of the following defect would show up as light indications on a radiograph?
a) Slag inclusions and copper inclusion
b) Tungsten inclusions and excessive root penetration
c) Cap undercut and root piping
d) Excessive cap height and incomplete root penetration
427)Essential variable?
a) Change in mechanical properties
b) Required re-approval of WPS
c) visual acceptance
d) All of the above
428) NECKING?
a) At the starting point of elasticith
b) Between the point of elasticith and plasticity
c) At the end point of Plasticity
d) At the starting point, of plasticity
437) After visual test, slightly undercut is found ( ie : <0.25mm ) for small thickness play
a) Welder says that hi will do a small weaving without preheat
b) welder says that hi will do a small weaving greater then original preheat
c) welder says that he will do a small waving with the original preheat
d) Inspector says to grind to blend it.
446) What is the maximum allowable HI/LO for 8 mm thick material is the following is applied. Linear
misalignment is Permissible is 10%of 't' is the maximum 2mm
a) 0.8 mm
b) 2 mm
c) 8.0 mm
d) it cannot be sentenced as an other side is shown by the symbol
b) MMA
c) SMAW
d) GTAW
448) When TIG wedding with stainless steel which of the following should be used
a) Alternator
b) AC transformer
c) DC generator
d) Constant potential rectifier
449) Submerged arc weld made with recycled flux are reliable to
a) Porosity
b) Coarse grain size
c) Undercut
d) Incomplete penetration
451) In the examination of a welded aluminium joint marco etching may reveal
a) Lack of inter run penetration
b) Carbon pick up
c) Weld decay
d) Micro cracks
452) Preheating and inter pass heating are used primarily for
a) Aiding fusion
b) Reducing hydrogen content of weld preparation prior to welding
c) ensure a fine grain size
d) Slow down the cooling rate after welding
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453) when open site working, serious porosity in metal arc weld is brought to your attention. What would
you investigate?
a) Electrode type
b) Electrode storage
c) Day temperature
d) Power plant type
454) Which of these test would normally be used for welder qualification on plate butt weld using 13 mm
low Carbon steel?
a) CTOD
b) Nick break
c) Fracture fillet
d) IZOD
455) Degreasing components are essential for quality welding, when welded some agents may;
a) Cause corrosion problems
b) Leave residues
c) Give off toxic gases
d) All of the above
a) lack of Root fusion would most likely show up as dark straight line with a light root.
b) lack of Root fusion would most likely show up as a dark root with straight edges.
c) lack of root fusion would most likely show up as a dark uneven line following the edge of the root
d) lack of root fusion canno be seen on a radiography
458) Which of the following additions may be added to an electrode's flux to act as a stabilizer?
a) Sodium silicate
b) Silicon
c) Manganese
d) Titanium dioxide
459) In GMAW, MIG/MAG welding which mode of metal transfer uses frequencies in cycle time
a) spray transfer
b) pulse transfer
c) dip transfer
d) globular transfer
460) On cross country pipe line, to ensure the root defects of the same, which NDT method to be suitable
to be carried out
a) Radiography testing
b) Ultrasonic testing
c) Magnetic particle testing
d) a and b
461) Very high deposition efficiency electrodes ( 180% ) have what disadvantages
a) higher vield strength of weld metals
b) higher level of hydrogen in the weld metal
c) operation is limited to only some position
d) they produce very hard weld metal
462) When welding with GMAW a typical mixture of gas for stainless steel would be
a) 98%argon + 2% oxygen
b) 60%argon+40% oxygen
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463) The wedding position usually positioning the greatest risk of fumes inhalation is
a) horizontal/vertical ( PC )
b) vertical up ( PF)
c) down hand ( PA)
d) overhead ( PE )
464) Low alloy steels having high carbon equivalent before welding will require:
a) A reduction in carbon content.
b) High pre-heat temperature
c) Low pre-heat temperature
d) No pre-heating
468) Welding process that use flux are sometime considered to be better than none fluy processes
because
a) fluxes may be dried to give low hydrogen level
b) fluxes may be have higher tolarance to surface contamination
c) they are good for welding good reactive metals
d) all of above
469) Which electrode coating gives the most voluminous gas shield
a) Rutile
b) Basic
c) oxidising
d) Cellulosic
471) How many temperature indicating crayons would be required to ensure the pre hra temperature was
laying with in a specified range.
a) a 1
b) b 2
c) c 3
d) d. as many as possible
472) When welding low carbon steel with GMAW process on dip transfer, one purpose a the inductance
control is to reduce
a) spatter
b) lack of fusion
c) Porosity
d) cold lap
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473) What type of welding covering will an electrode have that is suitable for welding 60mm C-Mn steel and
can give good weld metal toughness at-50 degree centigra
a) Rutile
b) 2 basic
c) 3 cellulose
d) 4 choice will depend on the welding position
474) The HAZ associated with a fusion weld on steel has up to how many separate region of micro
structure.
a) a.4
b) b.6
c) c.1
d) d.2
476) You found high hydrogen content after the deposition of weld, it is caused by
a) Hydrogen electrode not treated properly
b) 7011 electrode have low hydrogen
c) Cellulose electrode
d) Rutile covered with TiO2
477) A document that is established by consensus and approved by recognized body and provides, for
common and repeated use, guidelines, rules, a for activities or the is results aimed at the
achievement of the optimum degrees of order in a given context is called
a) Normative document
b) Regulation
c) Specification
d) Standard
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478) Would you consider using a 5 mm electrode for vertical up root runs in 6G ( HLO45 ) fixed position
pipe?
a) Yes it is compatible
b) Yes but this would depend upon the welder skill
c) No,it is not the most suitable electrode coating type
d) No,the electrode should have been smaller in diameter
480) When welding procedure may not be valid PA position, if the welding is done in PF positin, if
a) No NDT is carried out.
b) Tensile strength are specified.
c) Impact Strength are specified.
d) No PWHT is carried out
481) Cellulose electrode are often used for the deposition of a root pass on pipes welding in the filled this
is because?
a) hydrogen control is required.
b) the high deposition rate due to the iron power content.
c) the hydrogen gas produced in the flux increases the arc voltage.
d) all of above.
482) While inspecting a weld on a 100 mm thick high carbon steel plate with a tolerate of + or - 5 mm you
notice weld is visually acceptable, however the parent matre has several arc strikes present
adjacent to the weld approximately 3 mm deep, which course of action would you take?
a) None I am only inspecting the weld
b) Recommended that the area be dressed smooth
c) Recommended that the area be dressed smooth followed by MPI
d) High carbon steel is not susceptible to cracking so I would weld over the arc stri then blend them
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483) Mechanical tests are divided to tow areas, identify these from the list below:
a) Destructive and non destructive
b) Qualitative and quantitative
c) Visual and mechanical
d) Qualitative and visual
484) When examining a completed bend test, the angle of the bend was found to be 183 Deg. The testing
specification calls for the sample to have been foemed through 182 Deg.
a) They should be acceptable as the standard refers refers to minimum forming angle
b) The bends should be considered as failed
c) New bends should be produce and bent to 180 deg then re-examined
d) They should be rejected as the angle is not close enough to be acceptable
485) In welder qualification testing of 45 mm thick plates, why are side bends used instead. Of root and
face bends?
a) They are easier to produce
b) The testing equipment cannot handle thick root/face bends
c) Root defects are not important for welder qualification
d) They give more accurate indications
486) For the structure termed martensite to from in a C-Mn steel it must first be heated to.
a) just below it's lower critical temperature and rapidly cooled
b) A maximum temperature of 550 oC then rapidly cooled
c) Above its upper critical temperature and slowly furnace cooled
d) A full transformation to austenite then repidly cooled
490) You have a macro section of a T butt joint that show a step like defect lying our the visible HAZ. what
would be the defect?
a) HAZ cracking
b) Toe creaking
c) laminations
d) Lamellar tearing
491) Which electrode deposits weld metal with the greatest ductility and resistance to cracking
a) Rutile
b) Cellulosic
c) Basic
d) Oxidising
492) In positional MMA welding on pipe work, welder are having difficulty in obtaining good capping
profiles when welding in the overhead position. Would you
a) Advise them to increase the current
b) Advise them to increase the voltage
c) Ask for a new welding team
d) Suggest to use of a smaller diameter electrode
493) Argon purging in the root side is necessary in the TIG process of stainless steel.
a) obtain full penetration
b) Obtain full fusion
c) Avoid Porosity in root
d) Obtain a satisfactory weld surface finish
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494) The most common type of ailure associated with sharp fillets, notches and undercuts is
a) Crystalization
b) Fatigue
c) Corrosion
d) brittle fracture
495) Which of the following defects is more common to welds deposited by CO2 welding than welds
deposited by MMA?
a) Slag inclusions
b) Excess penetration
c) Lack of sidewall fusion
d) tungsten inclusion
496) Which off the following is likely to give the heighest impact strength in ferritic weld metal?
a) Cellulosic electrodes
b) submerged arc with basic flux
c) Spay transfer CO2 welding
d) Basic coated MMA electrodes
497) You suspect that femitic steel plates contains cracks in the prepared edges. What NDT method would
you use to check this?
a) Radiography
b) MPT
c) PT
d) UT
A) Argon
B) Argon+1%oxygen
C) Argon+20%CO2
D) none of the above
501) The first sub in a heat affected zone of the parent material nearest weld deposit will consist of
a) Large crystal grains
b) Small crastal grains
c) elongated crystal grains
d) Distorted crystal grains
a) In the EN numerical classification of welding process 131 & 135 represents the MAG welding
process.
b) 141 represents the MAG welding process.
c) 121 represents MAG.
d) None of the above.
505) As the carbon percentage increases in plain carbon steel, which of the following true?
a) Tensile strength decreases.
b) Yield strength decreases.
c) Toughness decreases.
d) Hardness decreases.
506) When 2 different matenal types are welded together, the joint may be referred to as...
a) a composite joint
b) a transition joint
c) a dissimilar metal joint
d) either b or c
508) Which of the following can anse from copper inclusikkons in a ferrite steel weld?
a) Weld metal cracks
b) HAZ cracks
c) Lamellar tearing
d) Porosity
c) Helium
d) oxygen
511) The need for pre-heat for Steel will increase if:
a) The material thickness reduces.
b) Faster welding speeds
c) The use of a larger welding electrode
d) All of the above.
512) Which of the following discontinuities could be as a primary processing discontinuty often found in
cast material?
a) Fatigue cracks
b) Stress corrosion crack
c) Porosity
d) Lack of penetration
513) What are the similarities between BS EN 22553 and AWS A 2.4 in depicting welding symbol?
a) Both have the same rule for depicting well all around.
b) Both have the same rule for depicting the other side.
c) Both have the same rule for depicting sequence of operations.
d) Both have the same rule for depicting welding process.
514) MIG/MAG welding what would be affected if the CTWD was extended?
a) amperage
b) voltage
c) inductance
d) travel speed
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517) Which of the following steels is likely to be more susceptible to hydrogen cracking?
a) Carbon equivalent of less than 0.25%.
b) Carbon equivalent of 0.35%.
c) Carbon equivalent of 0.38%.
d) Carbon equivalent of 0.43%.
518) According EN 22553, if the symbol is on the identification line where does the weld go ?
a) On both sides
b) On the arrow side
c) Opposite arrow side
d) It does not matter
519) Which one of these these test would most probably used for welder qualification on a plate bird world
using 13mm low carbon steel
a) CTOD
b) Nick break test
c) Fracture fillet test
d) IZOD
520) If the heat input in the process is increases then which of following statement is correct?
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522) The welder have increased the electrode strike out length of the SAW set, what would be effect on
the weld?
a) No effect
b) Weld width would be narrow
c) Penetration will be increased
d) The deposition rate will be greater if wire feed rate is increased also
523) Which of the following may increase the risk of haz crecking when wedding thick, section carbon
mangnese Steels?
a) Slow cooling after welding
b) Low moisture content in the electrode covering
c) Use of steel grad with a low cev
d) Use of a low heat input.
524) For cross-country pipelines, which type of mma clectrode require the use of a have pass technique to
reduce the risk of cracking
a) IRON POWDER
b) BASIC
c) CELLULOSIC
d) RUTILE
525) MIG welding tends to be susceptible to lack of fusion problems, this is because?
a) Poor maintenance of equipment
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b) Incorrect settings
c) Poor inter run cleaning
d) All of the above
526) An amount of which of the following element is positively required to make steals stainless?
a) carbon
b) manganese
c) boron
d) chromium
527) What does the tem high frequency mean when referring to TIG welding?
a) a high integrity weld is easily achievable
b) the power source gives a high duty cycles
c) a high voltage spark is used to initiate the arc
d) the output from the power source is high
528) Which of the following NDT method could be used on fillet weld on aluminum
a) DPT
b) UT
c) RT
d) MTI
530) Which would be general the least angular distortion when welding a 50 mm thick plate
a) single v preparation using MMA
b) single v preparation using MIG
c) square edge open butt using electrol slag welding
d) single u preparation using submerged arc welding
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531) High intensity energy beams are associated with which of the following welding processes
a) Laser
b) Electron beam
c) Plasma
d) All of the above
532) Gamma rays and X rays are part of a family of waves are called
a) Acoustic waves
b) Light waves
c) Electromagnetic waves
d) Transverse waves
535) Charpy testing is carried out on a wedding procedure test plate because?
a) It gives an indication of the through thickness ductility ( in Z direction ).
b) The impact test results can be used to verify that the material has not been adversely affected by
the heat of the welding.
c) It gives on indication of the materials alongation properties.
d) It gives a quick indication of the weld quality for welder qualification test.
536) A surface Breaking crack will be detected during a magnetic particle in inspection it is
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537) In NDT,
a) Radiography is the best method for the detection of lack of side wall single V butt weld
b) DPI can be used for both surface and subsurface defect detection.
c) MPI can be used for both surface and subsurface defect detection.
d) UT is the best method for the detection and sizing of rounded ( nonplanar) defects.
538) Inherent rectification if the electrical output is produced in the arc then TIG welding using
a) AC with a suppressor
b) AC without a suppressor
c) DC with reverse polarity
d) DC with straight polarity
543) A common gas mixture used in MIG welding nickel alloys to combine good levels of penetration with
good arc stability would be
a) 100% co2
b) 100% argon
c) 80% argon and 20% co2
d) 98% argon and 2% oxygen
545) Oxy pressure and nozzle size in flame cutting would influence
a) The temperature required for cut initiation
b) The ability to cut stainless steels
c) The depth of cut obtainable
d) None of the above
546) What destructive test would be required to ascertain the likelihood of crack in the HAZ of a weld
a) Nick break
b) side bend test
c) charpy impact
d) macro test
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547) Which of the following welding process used a resistive heating system to achived weld metal
deposition?
a) MMA
b) Resistance Spol Weld
c) Eleclro Slag welding
d) Friction Welding
549) Which electrodes are very susceptible to causing porosity in the deposited welds if long arc employed?
A) Basic
B) cellulosic
C) Rutile
D) none ot the above
551) Which of the following in a fusion weld usually has the highest tensile strength?
A) 1.weld metal
B) 2.Parent metal
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C) 3.haz
D) 4.fusion zone
552) When refernng to TIG welding, the shielding gas could be;
A) AREGON+HYDROGEN
B) AREGON+HE.
C) ARGON+NITROGEN
D) ALL 0f THE ABOVE
553) Which of the following electrodes is the most likely to contain the largest quanis combustible organic
compounds?
A) Basic
B) Acidic
C) Rutile
D) cellulose.
554) Preheat.
A) Is always carried out On C/Mn steels and 316 L stainless steel.
B) Is always camed out On C/Mn steels.
C) Is generaly required if PWHT is to follow
D) Is generally camed Out on C/Mn steels With a CEV > 0.48%
556) Whet hapens to the material as the operating temperature goes up?
A) Loses hardness
B) Yield strength reduces
C) Tendency to get oxidized in creases
D) All of the above
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557) CEV.
A) Is normally around 0.36% for fabricate C/Mn steel.
B) Is awaya above 0.48% For fabrlcated C/Mn Steel, this value is requlrad to adequate Strength.
C) Never exceeds 0.048% for fabricated C/Mn Steels.
D) CEV is only applicable for austenitic SS grades.
558) Preheat
A) Removes all surface Contaminations prior To welding.
B) Reduces the risk of Weld decay and hydrogen crack.
C) makes the joint easier to weld.
D) none of the above.
2. A large grain size, in the HAZ of a C-Mn stecl weld joint, may have ...
a) alow ductility
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b) low toughness
c) high tougincss
d) high tensile strength
5. The property of a material that has the greatest influence on welding distortion is the...
a) yield strength
b) co-efficient of thermal expansion
c) elastic modulus
d) co-efficient of electrical conductivity
6) Which of the following is a suitable shielding gas for FCAW of stainless steels ?
a) 100% Argon
b) 70% Argon + 30% He
C) Argon +5% Hydrogen
d) Argon + 20% CO2
9. Which of the following procedures would be expected to produce the least distortion in 15mm straight
butt weld?
a) TIG weld single sided, multi-pass
b) MMA weld single sided, nmulti-pass
C) MMA weld double sided, multi-pass
d)SAW weld I pass per side
11. Which of the following is associated with SAW more often than it is with MMA wclds is ?
a) hydrogen cracking in the HAZ
b) solidification cracking in the weld metal
c) re-heat cracking during PWHT
d) lamellar tearing
12. EN ISO 5817 (Level C) specifies that thc limit for the diameter (D) of a single pore in a weld is: D <_
0.3s, but max.4mm where s = malerial thickness. For which of the following situations is the pore
acceptable ?
a) s = 20mm, measured pore diameter = 5.0mm
b) s = 15mm, measured pore diameter = 4.5mm
C) s = 10mm, measured pore diameter = 3.0mm
d) s =10mm, measured pore diameter = 3.5mm
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13. To measure arc voltage accurately it is recommended that the voltmeter should be conected .....
a) as ncar as practical to the arc
b) across the power source terminals prior to arc initiation
c) across the power source terminals during the welding operation
d) all of the above are suitable to
14. Lamellar tearing has occurred in a steel fabrication. What technique could have been used to find it
before the weld was made?
a) X-ray examination
b) liquid penetrant examination
C) ultrasonic exarnination
d) it could not have becn found by any inspection method.
15. Pre-hcating a low alloy steel prior to welding is done to minimise the risk of ...
a) porosity
b) excessive distortion
c) HAZ cracking
d) lack of fusion
16. Typical temperatures used for normalising a C-Mn steel piate are .....
a) 600 to 650oC
b) 1000 to 1100oC
c) 700 to 800oC
d) 880 to 920oC
17. For GMAW the burn-off rate of the wire is directly related to ......
a) the stick-out length
b) wire fced speed
c) the arc voltage
d) the travel speed
18. For MMA welding of a 60mm wall nozzle to a 100mm wall vessel shell, pre-heat temperature should be
checked .
a) before welding starts/re-starts
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19. A crack running along the centreline of a weld bead could be caused by......
a) use of damp flux
b) lack of preheat
C) arc voltage being too high
d) weld bead being too deep and very narrow
20. In order to improve resistance to service failure caused by cyclic loading, it is good practice to ....
a) use low heat input welding
b) use steel with a low CEV
c) ensure there are no features that give high stress concentration
d) all of the above
21. The use of low carbon austenitic stainless steels and stabalised stainless steels will minimise the risk
of..
a) HAZ cracking
b) weld decay
c) weld metal cracking
d) distortion
22. Which type of SAW flux is susceptible to breaking down into fine particles during circulation?
a) fused
b) neutral
C) alloyed
d) agglomerated
23. The maximum hardness in the HAZ of a steel will incrcase if the ..
A) heat input is increased
b) CEV is increased
C) joint thickness is decreased
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24. BS EN ISO 5817 (Level B) specifies the limit for Excess Weld Metal (h) on a butt weld as:- h < Imm
+0.1b, but max. 5mm, b = weld width. In which of the following situations is the measured Excess Weld
Metal icceptable.
a) b=10 measured excess weld metal = 2.5mm
b) b= 20 measured excess weld metal = 3.Smm
C) b=35 measured excess weld metal = 4.5mm
d) b = 45 measured excess weld metal = 5.5mm
25. A carbon mangancse steel is being welded by MMA and the clectrode run-out-lengths that have been
used are much shorter than specified by the WPS. This deviation may give ..
a) an increased risk of hydrogen cracking
b) an increased risk of solidification cracking
c) lower values of HAZ toughness
d) higher values of HAZ hardness
26. The first procedure that is prepared for a Weld Procedure Qualification test weld is a....
a) pWPS
b)WPS
c) WPQR
d) WPAR
27. Transfer of material identification by hard stamping is sometimes not allowed for high integrity
applications because..
a) it is to slow
b) it can be a safety hazard
c) it may be damaging to the material
d) all of the above
29. Which of the following would be considered to be high Heat Input welding?
A) 550 J/mm
b) 55 J/mm
c) 5.5 J/mm
d) 5.0 kJ/mm
30. Initiation of a TIG arc by using a High Frequency spark may not be allowed because.......
a) it often causes tungsten inclusions
b) it can damage clectronic equipment
c) it is an electrical safety hazard
d) it often causes stop/start porosity
33. Which clement has the greatest effect on the HAZ hardness ofa carbon-manganese steel?
a) Molybdenum
b) Chromium
c) Titanium
d) Carbon
34. Pre-heating a steel plate with a carbon equivalent value (CEV) of 0.48 may be required in order to.....
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36. In friction welding, the metal at the interface when the joining occurs is described as being in the .....
a) liquid state
b) inter-critical state
c) plastic state
d) elastic state
38. Which of the following cutting methods is suitable for cutting stainless steel ?
a) plasma
b) oxy-acetylene
c) oxy-propane
d) all of the above
39. Which of the following would be classed as the most serious type of defect?
a) a buried linear slag inclusion
b) buried lack of inter-run fusion
c) surface breaking lack of sidewall fusion
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d) surtace porosity
40. Ultrasonic tcsting has an advantage over other NDT methods for the detection of ...
a) lack of side wall fusion
b) root undercut
c) incompletely filled groove
d) root concavity
41. Excecding the maxinum inter-pass temperature specified for a C-Mn steel weld joint, may give.....
a) excessive porosity
b) burn through
C) lower toughness
d) all of the above
42. MIG/MAG welding has a tendency to give lack of sidewall fusion when...
a) spray trans fer conditions are used
b) 100%CO2 shielding gas is used
C) pulsed current is used
d) dip transfer conditions are used f3* : i ,
43. The temperature range over which a stcel goes from having high toughness to low toughness is
called ....
a) the critical transformation temperafure
b) the ductility dip temperature
C) the bi-modal temperafure
d) the transition temperature
44. For SAW, what is the effect of raising arc voltage but keeping vith all other parameters the same ?
a) the weld bead width will increase
b) the depth of penetration will increase
c) the weld bead width will decrease
d) the depth of penetration will decrease
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45. Changing an essential variable (beyond the allowed limits) for a qualified welding procedure ....
a) may change the mechanical properties of the joint
b) may adversely affect the quality of the weld
c) will require a new welding procedure to be approved
d) all of the above
46. With reference to the various grades of stainless stecis, which of the following statements is true ?
a) they are all non-magnetic
b) they all require 100% Ar for GMAW
c) they all have very high thermal conductivity
d) only certain grades can be used for service at very low temperatures
47. Which of the following AWS A5.1 electrodes has a rutile covering......
a) E 6010
b) E 7016
C) E 7018
d) E 6013
48. Welds made with very high heat input will show a reduction in ...
a) tensile ductility
b) notch toughness
c) fatigue strength
d) mcreep resistance
49. During PWHT of a complex fabrication, it is heated to the soak temperature at a much higher rate than
specified by the procedure. This may.....
a) cause excessive oxidation
b) not allow sufficient time to relieve stresses
c) introduce excessive compressive stresses
d) cause distortion
50. When MAG welding in dip transfer mode (short-circuiting mode) spatter can be reduced by..
a) using inductance
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51. Repair welding of in-service plant and equipment may be more difficult than making repairs during initial
fabrication because .....
a) the material may be contaminated
b) of restricted access to repair area
c) positional welding may be needed
d) of any of the above
52. For gamma radiography of a steel weld at 4Omm thick, the recommended isotope is....
a). Thulium 170
b) Ytterbium 169
c) Iridium 192
d) Cobalt 60
54. A transverse tensile test, from a Weld Procedure Approval Record (WPAR) test plate, is used to
measurc ...
a) the tensile strength of the weld
b) the tensile strength of the joint
c) the stress/strain characteristics of the weld
d) the stress/strain characteristics of the joint
55. The highest and lowest heat input positions are considered to be ..
a) PB highest; PA iowest
b) PE highest; PC lowest
c) PD highest; PB lowest
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d) PF highest; PG lowest
56. What type of covering will an electrode have that is suitable for welding 60mm C-Mn steel and can give
good weld metal toughness at-50°C '?.....
a) rutile
b) basic
c) cellulosic
d) choice will depend on the welding posítion
57. The dip transfer mode (or short-circuiting mode) of metal transfer used for MIG/MAG welding is
characterised by ...
a) giving deep penetration
b) being suitable for positional welding
c) giving low spatter
d) all of the above
58. Carbon equivalent values (CEV) are used to determine the how to avoid the risk of ...
a) hydrogen cracking
b) lamellar tearing
c) solidification cracking
d) weld decay
59. When 2 different material types are welded togcther, the joint is referred to as ...
a) a composile joint
b) a transition joint
c) an autogenous weld
d) all of the above
60. Which mechanical test can be used to mensire the toughness of weld metal, HAZ and parent material ?
a) macro
b) nick break
c) hardness
d) Charpy impact
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61. Which is the best destructive test for showing lack of side-wall fusion in a 25mm thick but weid ?
a) nick break
b) side bend
c) Charpy impact
d) a face bend test
63. A fabrication procedure calls for the toes of all welds to be "blended in" by grinding. The most likely
reason for doing this is to ....
a) make the weld suitable for liquid (dye) penetrant inspection
b) improve the fatigue life
c) reduce residual stresses
d) improve the general appearance of the welds
64. For full penetration single-sided butt joints, root bead penetration and profile are mainly influenced
by ......
a) root face
b) bevel angle
c) root gap
d) included angle
66. When visually inspecting the root bead ofa single-vee-butt weld it should be checked for.....
a) lack of root penetration
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b) HAZ hardness
c) Ctungsten inclusions
d) all of the above
68. The European Standard for NDE of Fusion Welds by Visual, Examination is ..
a) EN 288
b) EN 499
c) EN 287
d) EN 970
69. Visual inspection of a fabricated item, for a high integrity application, should cover inspection activities..
a) before, during and after welding
b) before welding only
c) after welding only
d) during welding and after welding only
71. Incomplete root fusion in a single-vee butt weld may be caused by....
a) linear misalignment
b) the root gap being too large
c) root faces being too small
d) all of the above
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72. When visually inspecting the face of a finished weld it should be assessed for ....
a) maximum excess weld metal height
b) toe blend
c) inter-run blend
d) all of the above
77. For fillet welds, it is normal practice in the UK & USA to measure......
a) throat thicknesses
b) leg lengths
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c) penetration depths
d) both A & C
78. In a bend test, when the face of the specimen is in tension and root is in compression, the test is
called...
a) root bend
b) a side bend
c) a face bend
d) a longitudinal bend
79. Heavy porosity on the surface of some MMA welds made on a construction site is most likely to be
caused by....
a) use of the wrong class of electrodes
b) the use of excessive current
c) moisture pick-up in the electrode covering
d) a bad batch of electrodes
82. Which group of welders is most likely to require continuous monitoring by a welding inspector?
a) concrete shuttering welders
b) overland pipeline welders
c) tack welders
d) maintenance welders
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83. Which of the following fillet welds is the strongest (assuming they are made using the same material,
and WPS)?
a) 8 mm actual throat
b) 7 mm leg + 2 mm excess weld metal
c) mitre fillet with 10mm leg
d) concave filet with 1 Imm leg
84. A typical included angle for MMA welding of a full penetration pipe butt joint is...
a) 35
b) 70°
c) 90°
d) dependent on the pipe diameter
85. A fillet weld has an actual throat thickness of 8mm and a leg length of 7mm. What is the excess weld
metal ?
a) 2.1mm
b)1.8mm
C) 3.1mm
d) 1.4mm
87. If a Welding Inspector detects a type of imperfection not allowed by the Application Standard he must
always....
a) request further NDE
b) reject the weld
c) prepare a concession request
d) only reject the weld if he considers it to be harmful
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88. BS EN 970 allows the use of a magnifying glass for visual inspection but recommends that the
magnification is ....
a) x2
b) x2 to x5
c) xS to x10
d) not greater than x20
89. The majority of welder qualification tests are carried out using an unbacked joint. This is because .....
a) it is quicker, and cheaper, if back-gouging is not required
b) if the welding process is not TIG, back purging is not required
c) all welder qualification tests are done on small diameter pipe
d) it requires more skill and increases the welder's qualification range
90. Deflection of the arc, due to residual magnetism in the base material, can make it difficuit to control the
quality of the weld. This problem is commonly known as......
a) arc initiation
b) arc misalignment
c) arc blow
d) arc constriction
92. Which type of electrode is used for vertical-down welding ('stove-pipe' welding) of pipeline girth welds ?
a) rulilc
b) cellulosic
c) high recovery rutile
d) all of the above
93. The three main types of MMA electrodes that are used for welding C & C-Mn steels are ....
a) basic, cellulosic and rutile
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94. A WPS may specify a maximum width for individual weld beads (the 'weave' width) when welding C-Mn
steels. If the bead width is exceeded it may cause...
a) lack of inter-run fusion
b) the HAZ impact toughness to be reduced
c) lack of sidewall fusion
d) the HAZ hardness to be higher
95. MMA electrodes, with the flux covering removed, should not be used as filler rods for TIG welding
because....
a) welding costs will be much higher
b) the rod diameter will be too large
c) the weld metal compositión may be wrong
d) the rods will be-too short
96. For TIG welding, what benefit does a current slope-out device have ?
a) it reduces Tungsten spatter
b) it reduces the risk of crater cracking
c) it reduces the risk of arc strikes
d) it reduces the interpass temperature
97. Which type of power source characteristic is nomally used for manual welding?
a) constant voltage
b) flat characteristic
c) constant current
d) a motor generator
98. When arc welding is being used, which parameter has the greatest effect on penetration ?
a) arc voltage
b) welding speed
c) current
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99. Pipe bores of some materials must be purged with Argon before & during TIG welding This is done in
order to....
a) prevent root concavity
b) prevent burn-through
c) prevent oxidation of the root bead
d) prevent moisture pick-up in the root bead
100. The chemical composition of weld metal deposited by a C-Mn steel MMA electrode is controiled
mainly by ..
a) the core wire composition
b) the transfer of alloying additions from the flux covering
c) the transfer of iron powder from the flux covering
d) dilution from the base material
102. Silicon is added to steel, and the covering of MMA electrodes, for the purpose of.....
a) de-oxidation
b) improving strength
c) improving toughness
d) giving better resistance to hydrogen cracking
103. When a fusible insert is for TIG welding it can be very beneficial because ......
a) it eliminates porosity
b) it gives controlled root penetration
c) it avoids the need for back purging
d) all of the above
104. According to AWS 2.4 a weld symbol for the 'other side is placed ....
a) above the dashed line
b) below the dashed line
c) above the solid line
d) below the solid line
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106. A hydrogen controlled MMA electrode can always be recognised by the ....
a) EN code letter or AWS code number stamped on the covering
b) thickness of the electrode covering
c) Trade Name
d) colour of the flux covering
108. Which type of low alloy steel would be used for pipework operating at temperatures above 500°C ?
a) 9% Nickel
b) Carbon + 1.5%Manganese
c) 9% Chromium + 1%% Molybdenum
d) 9% Niobium + 1% Vanadium
109. Nick break and fillet fracture tests are used for ...
a) assessing weld quality
b) assessing weld metal ductlity
c) assessingweld mnetal toughnes
d) all of the above
c) 9%Cr + 1%Mo
d) 9%Ni
111. Excessive spattcr during MMA welding is most likely to be caused by.....
a) excessive current
b) incorrect baking and storage of electrodes
c) a bad batch of electrodes
d) all of the above
113. An arc strike (stray arc) on a steel component is usually an unacceptable imperfection because.....
a) it may cause 'contamination by copper
b) it may cause hard spots
c) it may give cracking
d) of both B &C
115. The'compulsory' part of the coding system used for electrodes manufactured to EN 499 must
include....
a) the covering type and positional capability
b) the covering type and preferred polarity
c) the covering type and minimum strength
d) the covering type and maximum hardness
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116. The electrode polarity that is usually used for TIG welding of steel is ..
a) DC negative
b) DC positive
c) AC
d) any polarity can be used
117. A typical temperature range for baking low hydrogen electrodes is.....
a) 150 to 200°C
b) 200 to 250°C
c) 300 to 350°C
d) 450 to 500°C
118. If welding travel speed is doubled, but the current and voltage remain the same, the heat input will ..
a) be reduced by 50%
b) be increased by a factor of two
c) be about the same
d) be reduced by approximately 25%
119. Which of the following butt-weld preparations is usually the mosi susceptible. to lack of sidewall fusion
during the manual metal arc process?
a) A double-U butt
b) Asingle-V butt.,
c) A double-V butt.
d) It is not normally a defect associated with the MMA welding procėss.
121. What is the throat thickness of a fillet weld (equal leg lenghs)?
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124. Under most conditions, which of the following welding þositions will deposit the most weld metal.
a) Vertical down.
b) Overhead.
c) Horizontal-vertical.
d) Flat (down hand)
129. Which of the following welding processes/technique is likely to be used for the repair welding of
localised porosity in a butt weld?
a) MMA, PG position.
b) Mechanised MAG.
c) Submerged arc.
d) All of the above.
e) None of the above.
130. Which of the föllowing welds would be considered in a situation where two plates are to be joined that
overlap.(assume no external assess).
a) A fillet weld.
b) A single-bevel butt weld.
c) A plug weld.
d) A single-U butt weld.
131. In the MMA welding process, which of the following is most likely to be caused by a welder with a
poor technique?
a) Deep weld craters/crater cracks.
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b) Copper inclusions
c) Hydrogen cracks
d) Ali of the above.
133. When inspecting a criticąl component, the toes of a weld must be:
a) Always ground flush.
b) Must always overlap at least 1.5 mm onto the parent matęrial.
c) Must always be inspected using a crack detection method (MPI, DPI).
d) None of the above can be selected-specification requirements unknown.
134. When carrying out visual inspection, the specification tnakes no mention of the requirements for
visual inspection, in,this situation what should you do?
a) Cary out normal visual inspection.
b) Seek advice from higher authority.
c) Carry out no visual inspection.
d) Re-write the requirements of the specification.
135. Under most circumstances, which of the foliowing do you consider to be duties of a welding inspector?
a) The supervision of welders.
b) Procedure writing.
c) Qualifying welders
d) All of the above.
136. Which of the following is most likely to cause a burn through
a. Root gap too small.
b, Travel speed too fast.
C. Root face too small
d. All of the above.
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137. In an arc welding process, which of the following is the correct term used for the amount of weld metal
deposited per minute? a
a) Filling rate.
b) Depositio rate.
c) Weld deposition.
d) Weld duty cycle.
138. What is the term given for the area of a welded joint just outside the weld metal that has undergone
microstructural changes?
a) Heat affected zone.
b) The weld zone
c) Fusion zone.
d) All of the above terms may be used.
139. When carrying out visual inspection, which defect (s) is likely to be missed?
a) Linear misalignment.
b) Cap undercut.
c) Porosity.
d) Lack of fusion (inter run).
143. On a single-V butt weld, the distance through the centre of the weld from root to face is called:
a) Reinforcement.
b) Penetration.
c) Throat thickness.
d) None of the above.
145. The need for pre-heat for steel will increase if:
a) the material thickness reduces.
b) Faster welding speeds
c) The use of a larger welding electrode
d) All of the above.
146. Which of the following butt weld preparations is most likely to be considered for the welding of a 6mm
thick plate?
a) Double-V but.
b) Asymmetrical double-V butt.
c) Single-U butt.
d) Single-V but.
c) Good communicator.
d) All of the above.
150. What type of power sourçe characteristic is required for a manual process?
a)Constant voltage.
b)Flat characteristic.
c)Drooping characteristic.
d)None of the above
151. Which of the following electrodes and current types may be used for the TIG welding of nickel and its
alloys?
a)Cerium electrode, DC-ve.
b)Zirconiurm electrode, AC.
c)Thorium electfode, DC +ve.
d)All of the above may be used.
152. What are the possible results of having a heat input to low:?
a) An increase in hardness, lower yieid strength and lack of fusion.
b) A reduction in toughness, hydrogen entrapment and an increase in
hardness.
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153. Defects oütside the permissible limits of the applicabie specificalion should be: 1
a) The decision is up to the welding inspeçtor.
b) Repaired.
c) Always double checked using NDT
d) All of the above.
154. Electrodes used in mahual metal arc welding can be grouped into three main types, these are:
a) Oxidising, basic and rutile.
b) Cellulose, basic and acidic.
c) Granular, rutile and basic.
d) Rutle, basic and cellulose.
155. Movement of the arc by magnetic forces in an arc welding process is termed:
a) Arc deviation.
b) Arc misalignment.
c) Arc blow.
d) Stray arC.
156. A crack type most associated with the submerged a'c we!ing process is
a) Hydrogen cracking in the HAZ.
b) Solidification cracking.
c) Lamellar tearing.
d) Fatigue cracking.
157) The main reason for using a back purge when welding 18-8 stainless steel with the TIG welding
process is to:
a) Improve positional welding.
b) Prevent the possibility of porosity.
c) Prevent excessive root penetration
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159. If arc blow exisis when welding with the MMA welding process, this can be bestreduced or eliminated
by:
a) A change from AC to DC current.
b) A change from DC to AC current.
c) A change from DC +ve to DC -ve.
d) A change from DC -ve to DC tve.
160. When welding a double-V butt weld with the submerged arc welding procesS the presence of centre
line porosity may be due to:
a) Damp flux.
b) Contamination on the weld preparations.
c) incorrect flux depth
d) All of the above.
161. The inclusion of an inductance in the welding circuit whe using MIG/MAG welding process is to:
a) Control the rate of spatler in the dip transíer moc
b) It enables the welder to weld in position with the s:ray transfer mode.
c) It allows for thicker filler wires to be used (2.6-3.6~n1 diameter).
d) It allows full control over droplet size in the spray ansfer mode.
162. An undesirable property of aluminium oxide residue, wheh welding is that it:
a) Decrease weld pool fluidity.
b) Requires more heat to melt it when compared to aiuminium.
c) Causes the weider to travel to quickly.
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163. Which of the following welding process is most likély to be, used for the
welding of a small diameter stainless steel pipe, 6mm-wall thickness?
a) GTAW
b) SMAW
c) Submerged arc welding.
d) GMAW
164. When considering the tungsten arc welding process wha the purpose of the down-slope (slope-out)
control?
a) Ensure good penetration.
b) To prevent arc striking on the parent materia
c) To help prevent the formalion oí crater aipe and possible cacking.
d) To help prevent tungsten inclusions during welding
165. When considering thermal cutting loca! hardening can te reduced by:
a) Increasing the cutting speed.
b) The use of propane as a fuel gas.
c) Pre heating the material to be cui.
d) All of the above.
167. In a MMA welding process, which of the following statements are false?
a) An arc gap, which remains almost constant even if as usual the welder varies the position-of the
electrode.
b) A voltage, which remains almost constant eveni ií as usual the welder, varies the arc gap.
c) A current, which remains almost constant even if as usual the welder, varies the arc gap.
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d) A and b.
e) All of the above.
168. Which of the following welding process, after the weld is completed normally
requires a post weld heat treatment to resiore toughness alues
a) ESW.
b)) MMA.
c) MAG.
d)Al: Compleled welds rec:ire a pos: heat lreainmen Fgarciess oi welding process.
169. Which of the following current types would you expect to be used for the welding of aluminium with the
TIG welding process?
a) DC-ve.
b) DC +ve.
c) AC
d) All of the above.
171. When considering hydrogen, which of the following welding process would" produce the lowest lėvels
in the completed weld (under controlled conditions)
a) MMA.
b) SAW.
c) TIG.
d) FCAW.
172. Pre heat prior to the welding of a carbon steel butt weld:
a) Must always be carried out.
b) Is always carried out using a gas flame
c) Need not be carried out if post weld heat treatme": s to allow
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173. In steel the element with the greatest effect on hardness IS:
a) Chromium.
b) Manganese.
c) carbon.
d) Nickel.
174. For a given voltage and current settings on a MMA welding plant, when thee arc length is shortened,
which of. the following will be mcsl affected.
a) The current will increase.
b) The current will decrease.
c) The voltage will decrease.
d) The voltage will increase.
177. When calibrating a mechanised MAG welding plant, :hich of the following applies (WFS = Wire feed
speed)?
a) Check - WFS, current, volts and wire diameter
b) Check - WFS, joint set-up, gas flow rate and .S.
c) Check Gas flow fate, stick out length, WFS and current. x
d) All of the above. *
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180. Hydrogen cracking in a weld zone is most likely to occur when welding:
a) Carbon manganese steels.
b) Austenitic staihless steel.
c) Micro alloyed steel (HSLA).
d) Low carbon steel.
182. Which of the following destructive tests would indica: the toughnass value ot the weld metalparent
metal and HAZ?
a) Macro.
b) Nick break.
c) Tensile
d)Charpy Vee notch.
183.What constituent is needed in a coating of an electrode to prevent the formation of porosity when
welding rimming steel?
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a) Iron powder.
b) Potassium silicate.
c) Silicon
d) Calcium carbonate.
184. Welds made with high heat inputs show a reductior in one of the following properties?
a) Ductility.
b) Toughness.
c) Elongation.
d) Penetration.
185. Which of the following steel types would give rise to the formation of porosity when autogenously
welded with an arc welding process
a) Fully killed steel.
b) Semi kiled steel,
c) Rimming steel.
d) Balanced steel.
186. Which of the following elements, which may be added to steel, has the greatest affect on creep
strength.
a) Tungsten.
b) Manganese.
c) Carbon.
d) Molybdenum
188. What four criteria are necessary to produce hydrogen.induced cold cracking?
a) Hydrogen, moisture, martensitic grain structure and heat
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b) Hydrogen, poor weld profiles, temperatures ahove 200°C and a slow cooling rate.
c) Hydrogen, a grain structure susceptible to cracking, stress and a temperature below 200°C.
d) Hydrogen, existing. weld defects, stress and a grain structure susceptible to cracking.
192. Which of the following heat treatments on steel cools down in air from the austenite region?.
a) Normalising.
b) Annealing.
c) Tempering.
d) Stress relieving.
d) Both a and b.
e) All of the above.
194. Which of the following units could a tensile specimen be measured in?
a) Pounds per square inch.
b) Newton per square inches.
c) Joules.
d) Both a and b.
195. Assuming that the welding process, material thickness, carbon equivalent and the welding parameters
to be the same, which of the following joint types would normally require the highest preheat temperature.
a) Edge joint.
b) Lap joint.
c) Butt joint (single-V).
d) Tee joint (illet welded)
196. Austenitic stainless steéls are more susceptible to distortion when compared to ferritic steels this is
because:
a) High coefficient, low thermal conductivity.
b) High coefficient, high thermal çonductivity.
c) Low coefficient, high thermal conductivity.
d) Low coefficient, low thermal conductivity, d.
197. Which of the following will most likely tequire the preheat temperature to be increased?
a) An Increase in travel speed.
b) A reduction in material thickhess
c) An increase in electrode diameterd) None of the'above
198. Which of the fotlowing properties may be applicable to a carbon steel weld (CE 0.48) welded without
preheat?
a) Narrow heat affected zone and hardness value in excess of 400 HV.
b) Broad heat affected zone and hardness values in excess of 400 HV.
c) A very tough and narrow heat affected zone.
d) Narrow heat affected zone and lo: hardness alues
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200. Which of the following NDT methods would be best suited for the detection of surface breaking defects
on an austenitic stainless steel pipe
a) MP.
b) UT.
c) DPI.
d) All of the above can be used.
201. Which of the following butt weld preparations would be considered for a mechanised welding process
a) Single-V butt, root gap 2.5 mm (welded from on side only).
b) Double-V but-welded both sides, ròot gap 2.0-mm.
c) Single-U butt with backing.
d) None of the above can be used for mechanised welding.
202. Which is the correct heat input for the following parameters, amps 350, volts 32 and the travel speed
310 mm/minute (MMA welcing process)?
a) 2.16 kJ/mm.
b) 0.036 kJ/mm.
c) kJ/mm.
d) 3.6 kJ/mm.
203. Assuming that the applicable specification makes no mention of arc strikes hat would you expect to do
as a welding inspector if arc strikes were found
on a component made of a high tensile strength material
a) Have the welder re-qualified.
b) lnore them.
c) Have the area checked for possible cracking.
d) Cut out the entire weld where the arc strikes exist.
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204. A multi-pass MMA butt weld made on carbon steel consists of 5 passes
deposited using a 6mm diameter electrode. A 12-pass weld made on the same joint deposited using a
4mm diameter electrode on the same material wil have:
a) A lower heat inpút and a higher degree of grain refinement
b) A lower heat input and a coarse grain structure.
c) A lower amount of distortion and a higher degree of grain refinement.
d) A higher amount óf distortion and a lower degree of grain refinement.
206. Which of the following mechanical tests can be Used to give a quantitative measurement of weld zone
ductility?
a) Tensile test.
b) Bend test.
c) Charpy V notch test.
d) All of the above.
208. Which of the following are true with regards to a charpy test.
a) It's a static test used to determine a materials notch toughness in the. weld region.
b) It's a dynamic test üsed to determine a materials notch toughness in the weld region.
c) It's a destructive test to give a measurement of through thickness ductility.
d) None of the above.
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209. Degreasing components are essential for quality welding but when welded some agent may:
a) Cause corrosion problems.
b) Leave residues
c) Give off toxic gases.
d) All of the above.
210. Cellulose electrodes are often used for the deposition of a root pass on pipes welded in the field. This
is because?
a) Hydrogencontrol is required.
b) The high deposition rate due to the iron powder content..
c) The hydrogen gas produced in the flux increases the arc voltage.
d) All of the above.
211. In the welding of austenitic stainless steels, the electrode and plate materials are often specified to be
low carbon content. The reason for this:
a) To prevent the formation of cracks in the HAZ.
b) To prevent the formation of chromium carbides
c) To prevent cracking in the weldd) Minimise distortion.
212. With regards to a welding procedure, an essential variable may:
a) Change the properties of the weld.
b) In fluence the visual acceptance.
c) Require re-approval of a weld procedure.
d) Al of the above
213. Which of the following NDT methods can only detect surface breaking defects?
a) MP
b) DRI.
c) UT
d) RT
e) Both a and b.
214. Which of the following defects would shiow up as light indications on a radiograph?
a) Slag inclusions and copper inclusion.
b) Tungsten inclusions and excessive root pernetra?ion.,
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215. Which of the following electrodes is the most likely to contain the largest quantity of combustible
organic compounds?
a) Basic.
b) Acidic.
c) Rutile.
d) cellulose.
217.When considering radiography using X-ray, which of the following techniques is most likeiy to be used
for a pipe to pipe weld (circumferential seam), 610mm diameter with no internal access?
a) SWSI.
b) DWSI.
c) DWDI G.
d) SWSl-panoramic.
218. A balanced welding technique for example back step weiding is most often used for:
a) Controlling lamellar tearing.
b) Increasing weld toughness.
c) Reducing weld zone hardness.
d) Reducing distortion.
c) Low hydrogen content welds, good stop/start properties and high strength.
d) Low carbon content welds. friable slag and high strength.
220. On a radiograph, the most likely appearance of lack of root fusion on a single- V butt weld is:
a) A dark straight line with a light root.
b) A dark root with straight edges.
c) A dark uneven line following the edge of the root
d) None of the above.lack of root fusion can not be seen on a radiograph.
223. Which of the following NDT methods would be the least effective on an austenitic stainless steel butt
weld.
a) UT
b) RT
c) DPI
d)MPI.V
224. The hardest part of a multi-pass welded joint, assuming no post weld heat treatment has have taken
place is:
a) The HAZ of the cap.
b) The HAZ of the root.
c) The root.
d) The cap.
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225. Is it permissible to allow a single pass butt weld to cool down between weld passes?
a) It should be up to the welding inspector.
b) No the weld must be kept hot at all times.
c) It depends on the'welder
d) It depends on-the specification requirements.
226. The usual method of assessing the sensitivity and density of a radiographis by means of.
a) Densitometer and dosimeter.
b) Penetrameter and a densitometer
c) IQl and a dosimeter
d) IQ and a fluxmeter.
227. In the submerged arc welding process, the use of excessive high voltages would result in?
a) Insufficieht flux melting.
b) Excessive flux melking
c) Slag removal difficulties:
d) Excessive spatter
228. Welding a steel plate with a CE of 0.45 would require preheating to?.
a) Prevent the formation of sulphides.
b) Prevent hardening in the HAZ.
c) Prevent the formation of carbides.
d) To reduce the amount of current required.
229. Which of the following welding process uses a resistive heating system to achieve weld metal
deposition?
a) MMA
b) Resistant spot welding.
c) Electro-slag.
d) Friction welding.
230. What does the 70 represent on an E70 10 AWS A5.1 classified electrode?
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233. From the following electrode coding E50 4 B 160 20 H5, the compulsory part is:
a) E50 3 B 160 20 H5.
b) 160 20 H5.
c) E50 4 B.
d) None of the above.
b) Smooth.
c) Step like appearance.
d) Bright crystalline.
237. Which element in steel if present in significant amounts may lead to hot shortness?
a) Phosphorus.
b)Manganese.
c) Silicon.
d) Sulphur.
238. When "hydrogen control" is specified for a manual mesl arc'welding project.the electrode would
normally be
a) Cellulosic?
b) Iron oxide?
c) Acid ?
d) Basic?
239. You would with cetainty recognise. a hydrogen controlled filux covered electrode from its:
a) Colour ?
b) Length ?
c) Trade Name ?
d) AWS/BS639 Code Letter?
240.When manual metal arc welding is being carried out cn an open construction site, which group of
welders are the most likely or rquire continuous monitoing ?
a) Concrete shutering welding teams ?
b) Pipe welding team ?
c) Plater welders ?
154
d) Plant-maiAteAance-welders?
241. You notice manuzi metai arc electrodes, stripped oi :JX, are being used as filier wire, for TIG welcing.
You would object because:
a) It is too expensive ?
b) The wire would be too thick ?
c) The weld metal composition may be wrong ?
d) The wire is too short ?
242. When open site werking, serious porosity in metal arc welds is brougnt to your attention. What would
you investigate ?
a) Electrode ype ?
b) Power plani type ?
c) Electrode storage ?
d) Day temperature ?
243. The steel composition in a structural contract is changed from 0.15% carbon, 0.6% manganese, to
0.2% carbon, 1.2% manganese. Might this influence the incidence of:
a) Porosity ?
b) Cracking in the weld area?
c) Undercut for fillet welds ?
d) Lack of root fusion defects ?
245. When TIG welding Austenitic stainless steel pipe. Argon gas backing is called for.
This is to :
a) Prevent oxidation?
b) Prevent underbead ciacking ?
c) Prevent porosity?
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246. Pre-heating a Carbon steel manual metal arc welding is carried outto minimise the risk of :
a) Scattered porosity?
b) Worm hole porosity ?
c) Parent metal cracking ?
d) Lack of penetration ?
247. In UK practice, BS499 Part 2 specifies that the drawing dimension quoted for a fillet weld is the.
a) Leg lengih ?
b) Actual throat thickness ?
c) Weld width ?
248. For open site manual metal welding the following ecuigment is available. Which would you choose ior
saie working ?
a) Single opera:or transiormer ?
b) Muli opera:cr irensiormers ?
c) AC/DC composite power unit ?
d) Diesel engine driven motor generator ?
249. Ultrasonic testing is preferable to radiographic testing due to
a) Ability to find all defects.
b) Lower amount of operator skill required
c) Ability to detect laminations.
d) None of the above
250. Which of the following is never a reašon for applying post weld heat treatment.
a) Hydrogen release.
b) Stress relieying.
c) Grain refinement.
d) Reducing carbon contents:
251. Lamellar tearing has occurred in a steel fabrication BEFORE welding could, which of the following test
methods could have detected it?
a) Radiographic testing.
156
b) Utrasonic testing.
c) Magnetic particle testing.
d) lt could not be found by any testing method.
253. A welding process where the welding plant controls the travel speed and arc gap, but under a
constant supervision using a shielding gas mixture of 80% argon- 20% carbon dioxide is termed as:
a) A manual MAG process.
b) A semi automatic MAG process.
c) A mechanised MIG proçess.
d) A mechanised MAG process.
255. Which of the following destructive tests would show the results in joules?
a) Tenisile test
b) Charpy test.
c) Bend test.
d) Hardness test.
256. Generally the most suitable method of detecting lack of sidewall fusion on a single-V butt weld (30° to
35° bevel angles) would be: .
a) Ultrasonic testing.
b) Radiographic testing
c) Magnetic particle testing
157
d) Both a and b.
e) All of the above
257. When welding with the MIG welding process using pure argon as the shielding gas on carbon steel,
which of the following problems are likely to occur?
a) Copper inclusions and excessive cap heights
b) Excessive root penetration and porosity.
c) Slag inclusions and crater pipe.
d) Lack of fusion and poor cap profiles.
258. It is a requirement to excavate a crack in á welded component; the defect is at least 25 mm in depth,
which of the following would you expect to be done to .remove the'defect?
a) Arc air, ground finish and checked with crack detection
b) Thermal gouging, ground finish and check with MPI:
c) Oxy-gas cutting, ground finish and checked with crack detection.
d) Both a and b.
e) All of the above.
260. Which of the foliowing welding processes would be the most suited for the welding of carbon steel in
excess of 100 mm thickness
a) Tungsten inert gas
b) Electro-slag
c) Manual metal arc.
d) Plasma arc.
262. Which of the following is likely to be considered an essential, variable on a welding procedure
a) A change from an electrode classified to AWS E6011 to an electrode E6012.
b) A change in preheat temperature from 50•Cto 150•C.
c) A change in welding position from PA to PF
d) All of the above
263. Which of the following is applicable if the heat input is to high during the deposition of a.weld made
using the MMA welding process?
a) Low toughness.
b) High susceptibility tó hydrogen entrapment.
c) High hardness.
d) High susceptibility to lack of fusion.
264. Which of the following will infiuence the amount of distortion on a component during and after welding?
a) Heat input.
b) Lack of restraint.
c) Material properties.
d) Both a and b.
e) All of the above.
a) Weld metal, HAZ and the parent material in the immediate vicinity.
b) Weld metal only.
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267.Which of the following elements if present in significant quantities in šteel may lead to cold shortness.
a) Sulphur.
b) Phosphorous.
c) Silicon.
d) Copper
268. A black triangular flag used in conjunction with a weld symbol as to EN 22553 means
a) A specific welding process is required.
b) The weld is to be made under constant supervision of a qualified welding inspector.
c) Welding to be carried out on site (field weld)
d) The weld must be subjected to NDT.
269. What is the ratio between the leg length and the design throat thickness on a mitre fillet weld with
equal leg lengths
a) 1:1
b) 2:1
C) 1.414 1.
d) It depends on the fillet welds dimensions and fit up requirements.
271. Why is the arc shielded, when using an arc welding process?
a) To eliminate hydrogen from the arc.
b) To retard the cooling rate of the solidifying metal.
c) To excluded the atmosphere from the arc region.
d) The arc is not always shielded when using an arc welding process.
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273. In a bend test, the face of the specimen is in tension and root is in compression; the type of test being
carried out would be:
a) A root bend test
b) A side bend test
c) A face bend test
d) None of the above
274. Uitrasonic testing is of advantage in detecting which of the following weld imperfections over other
NDT methods:
a) Lack of.side wal fusion
b) Surface undercut
c) Incompletely filled groove
d) Overlap
275. The process of tempering is often carried out to regain toughness after which of the following
processes:
a) Annealing
b) Normalising
c) Hardening
d) Stress relieving
276. The presence of iron sulphide in the weld metal is most likely to produce which of the following upon
contraction of the weld:
a) Soidification cracking
b) Hydrogen cracking
c) Intergranular corrosion
d) Stress corrosion Cracking
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b) 2300°C
c) 5000°
d) None of the above
288. A common gas/mixture used in MIG welding nickel alloys to combine good levels of penetration with
good arc stability would be:
a) 100% CO2
b) 100% argon
c) 80% argon 20% CO,2
d) 98% argon 2% oxygen
291. Oxy pressure and nozzle size would infiuence what in flame cutting:
a) The temperature required for cut initiation
b) The ability to cut stainless steels
c) The depth of cut obtainable
d) None of the above
293. A fatigue failure is characteristic by the appearance of the fracture surface. It Would be
a) Rough and torn
b) Cheveron"-like
c) Smooth
d) None of the above
296. Flame cut preparations may, during welding, increase the likelihood of:
a) Cracking
b) Misalignmént problems
c) Inclusions
d) All of the above
300. MIG welding tends to be susceptible to lack of fusion problems.This is because of:
a) Poor maintenance of equipment
b) Iancorrect settings
C) Poor interun cleaning
d) All of the above-
301. Manual metal arc electrodes can be grouped into three main types. These are
a) Basic cellulosic and rutile
b) Neutral cellulosic and rutile
c) Basic cellulosic and neutrald
d)None of the above
305. With reference to a root penetration bead, you could certainly assess:
a) Root fusion and penetration
b) Root concavity
c) Bumthrough
d) AI of the above
307. A magnifying glass may be used during visual inspection but BS 5289 states that its magnification
should be:
a) up to 5
b) 2-2.5
c) 5 10 ¢
d) none of the above
308. When visually inspecting a fllet weld, it would normally be "sized" by:
a) the leg lengths
b) the actual throat thickness
c) the design throat thickness
d) both A & C
b) Slag inctusion
c) Incomplete penetration
d) Both A &C
310. Penetrant inspection and magnetic particle inspection are mainiy used to:
a)Aid visual inspection
b) Because the application standard says so c) To confirm "visual uncertancies"
d) All of the above.
311. Defects outside of the limits specified in a standard should always be:
A)Repaired
b)Reported to "a senior person"
c) Assessed along with other defects
d) All of the above
312. You notice a very "veed" ripple shape. This is most likely caused by:
a) Poor consumable choice
b) Welding position
c) Excessive travel speed
d) All of the äbove
319. A Code of Practice for Visual Inspection shöuld cover the foliowing:
a) Before; during and after welding activities b) Before welding activities only
c) After welding activities only
d) None of the above
d) Both A &C
322. When visually inspecting a completed single vee butt weld cap you would certainly assess:
a) Cap height
b) Toe blend
c) Weld width
d) A, B & C
323. In a tensile test, a brittle material would be indicated if the fracture surface ?
a) Shows a reduction in size'
b) Is fiat and featureless
c) Breaks in the weld metal
d) Breaks in the parent material
324. What destructive test would be required to ascertain the likelihood of cracking in the HAZ of a weld?
a) Nick break
b) Side bend test
c) Charpy impact
d) Macro test
327. Which one of the following processes uses the "keyholing" system of fusion?
a) Friction welding
b) Diffusion bönding.
c) Electron beam welding
d) Autogenous TIG welding
329. Welding procedures may require welds to be deposited at a controlled rate heat input. High heat
inputs would ?
a) Have poor profile
b) Have larger grain size
c) Have high hardness in the HAZ
d) Have low elongation properties
330. The use of celluiosic electrodes is often made when welding the root pass of pipes in the field. This is
because ?
a) Hydrogen control is needed
b) Iron powders in the electrode
c) Higher arc voltage can be obtained
d) Shorter arc length can be achieved
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331. In the welding of austenitic stainless steels, the electrode and the plate material can be purchased
with low carbon contents.: The reason for this is to prevent ?
a) Cracking in the HAZ
b) The formation of chromium carbides
c) Cracking in the weld metal.
d) Distortion
332. Submerged arc fluxes can be supplied in two forms; these are ?
a) Sintered and agitated
b) Agitated and fused
c) Crushed and agglomerated
d) Fused and agglomerated
333. In a steel which has improved creep properties at elevated temperature, Which one of the following
elements helps in this improvement ?
a) Tungsten
b) Manganese
c) Molybdenum
d) Carbon
334. In X-ray work, the quality of the radiogrpahic negative is assessed by the?
a) Density of the Filmn
b) IQI Indicator
c) KVA available
d) Stand-off Distance
335. A steel described as QT will have improved tensile pr?perties because it has?
a) Had control of chemical composition
b) Been heat-treated
c) Been quality tested
d) Been vacuum melted
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336. Which one of the following type of steels would give rise to the formation of porosity when
autogenously welded with an arc process?
a) Fully killed steel
b) Semi killed steel
c) Rimming steel
d) Fine grained steel
337. In submerged arc welding, the use of excessively high voltage would result in?
a) insufficient flux melting
b) Excessive flux melting
c) Slag removal difficulties
d) Spatter
338. The weld metal deposit of manual metal arc electrodes achieves its mechanical strength through?
339. What constituent is needed in a coating of an electrode to prevent the formation of porosity in welding
of a rimming steel?
a) Iron Powders
b) Calcium Fluoride
c) Silicon
d) Calcium Carbonate
340. Welds made with high heat inputs show a reduction in one of the following properies?
a) Ductility
b) Toughness
c) Fatigue Strength
d) Mechanical Strength
341. In the welding of austenitic pipework, the bore is usualy purged with Ar to ?
a) Prevent formation of porosity in the weld.
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342. Degreasing components are essential for quality welding but some agents may
a) Cause Corrosion Problems
b) Give off Phosgene Gas
c) Leave Residues
d) All of the Above
343. Which of the folilowing chemical elements has the greater effect on the hardenability of a steel plate?
a) Molybdenum
b) Chromium
c) Titanium
d) Carbon
344. In MAG/CO2 welding, which parameters give the greatest control of weld appearance-during dip.
transfer or short circuiting welding?
a) Wire stick-out length
b) Amperage
c) Wire feed speed
d) Inductance
345. In MMA welding, the slags produced can be varied to suit the welding position which type of slag
Would be required for welding in the 3G position?
a) Fluid
b) Viscous
c) None of the above
d) Semi fluid
346. In MMA welding, what parameter is used for the control of penetration into the base material?
a) Voltage
B) Welding Speed
C) Iron Powders in the coaing
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D) Current
347.In the welding of a butt joint made from one side, which of the following controls the profile of the root
bead?
A) Root Face
B) Bevel Angle
C) Root Gap
D) None of the above
348. What type of power source characteristic is required, for manual welding?
A) Constant Voltage
B) Flat Characteristic
C) Drooping Characteristic
D) Motor Generator
349. Which one of the following destructive tests would indicate tihe toughness ot weld metal/parent metal
haz.
A) Macro
B) Nick Break
C) HardneSs
D) Charpy Vee Notch
350. What two functions in arc welding must be in equilibrium to enable a stable arc to be established?
A) Arc Voltage
B) Current
C) Wire/Electrode feed rate
D) Metal burn-off rate
351. You are to oversee the arc welding of some machine= fitings and find they are cadmium plated. Would
you:
A) Permit it to proceed ?
(b) Permit it to proceed with fume exracjon ?
C) Stop the operation at onte ?
D) Advise the welder to drink miik and psoceed
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353. A fabricating procedure calls for fillet welds to be "blanoed in by grinding. This is to influence:
a) HA.Z. cracking ?
B) Fatigue life ?
c) Residual stress ?
d). Yield strength ?
354. Bend test specimens have been taken from a, 25mm thick carbon steel. butt weld. Which would show
lack of inter-run fusion:
A) Side bend ?
b) Root bend ?
c) Face bend ?
D) Guided bend ?
355. Lamellar tearing has occurred in a steel fabrication. BEFORE welding could it have been found by:
A) X-ray examination ?
b) Dye penetrant ?
C) Ultrasonic inspection ?
D) would not have been found by ary inspection method?
356. If submerged arc weiding is to be used to make butt welds, wnich would you be most critical of
A) The roo gap tolerance ?
B) The angle of preparation ?
C) Tne root iece widith ?
D) The gas cut finish ?
357. Durirg CO2, welding. the arc length is most likely to be affected by
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359. You see a welder using an oxy-acetylene liame with a long feathered inner cone. What would be the
effect of this on a carbon sieel.
A) The weld could be hard and brittle ?
B) The weld metal could be too soft ?
C) There will be no effect on, the weld?
D) Tne weld will have undercut ?360. Toughness (Charpy V) is measured in
a) PSI
b) KSI
c) Joules
d) Brinell
365. Welding phenomena or deviation of the electric arc is usually caused by?
a) Wind
b)Damp electrodes
c) Magnetic forces
d) Broken electrode coating
b) Diamond
c) 10mm steel ball
d) Steel ball and diamond
369 Double sided preparations are normally made on thicker materials, when both sides are?
a) Restricted
b) Unrestricted
c) Distorted
d) Pre- heate
370. Gas pores are defined as internal gas filled cavities under?
a) 3 MM
b) 2 MM
c) 2.5 MM
d) 1.5 MM
b) Forging
c) Inclusion
d) Non inclusion
380. The mechanical tests of a welder approval may include which of the following?
a)Bend tests
b) Fillet weld fracture tests
c) Nick break tests
d) All of the above
381. A welder approval test is a test of the level of skill attained by the?
a) Pipe fitter/ welder
b) Welder
c) Welders assistant
d) All of the above
384. Generally the approved Welding Procedure Specification will have which of the
tollowing
a) Extent of approval
b) Approved in all parameters
c) Parameters play no part in approval
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385. Fillet weld racture tests are used to assess which welding condition?
a) Leg length
b) Throat size
c) Root fusion
d) Sidewall fusion
387. A nick break test is used to assess which type of weld configuration?
a) Double V
b) Fillet weld unequal leg length
c) Fillet weld
d) All of the above
388. The elongation marks on a transverse tensile test are usually how many MM apart?
a) 50 MMM
b) 10 MMM
c) 30 MNM
d) 45 MM
389. In a Macro assessment table which of the following defect would the inspector look Tor?
a) Excess weld metal height
b) Undercut
c) Slag
d) All of the above
a) Quantitive
b) Qualitative
c) Qualified
d) All of the above27. what does the number 141 referto on this drawing symbol?
a. the number of the WPS
B. the welding process
c. the number of the NDE procedure
d. the acceptance standard
391. Mechanical damage can be defined as any surface material caused during?
a) Rolling
b) Casting
c) Forging
d) Using a needle guns to compress weld capping runs
392. When carrying out a Charpy V test a graph can be produced using what as its base?
a) Carbon content
b) Temperature
c) Alloying content
d) None of the above
394. What should happen to spatter before visual inspection is carried out?
a) Spatter is not a problem for visual inspection
b) Spatter that is more than 2 mm need not be cleaned for visual inspection
c) Spatter should be cleaned off before visual inspection
d) Spatter will not have any affect on the weld or the base material
397. All things contain imperfections, but is only when they fall outside the level of
acceptance they should be termed?
a) Discontinuity
b) Defect
c) Mechanical damage
d) Welding imperfections
398. A singular gas filled cavity that is = or more than 1.6 mm in diameter is termed?
a) Cavity
b) Cluster porosity
c) Blow hole
d) Rounded porosity
400. what does the number 141 referto on this drawing symbol?
a. the number of the WPS
B. the welding process
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402.Where would you expect to find the term on a weld symbol called pitch?
a) Full penetration groove weld
b) Staggered intermittent fillet weld
c) Non Staggered intermittent fillet weld
d) Full penetration butt weld
403. The fillet weld leg length shall always be preceded by which letter?
a) A
b) E
c) F
d) Z
404. Nominal fillet weld throat thickness shall always be proceeded by the letter?
a) Z
b) S
c) E
d) A
405. Double sided butt weld symbols could include which of the weld configurations?
a) Double bevel
b) Double J
c) Double U
d) All of the above
406. According to BS 499 a flag with a circle means what should happen?
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408. The other side of the weld joint is represented by one of the following?
a) Broken line
b) Solid line
c) Double lines
d) None of the above
409. On thee welding symbol, supplementary information could be which of the following?
a) Welding process
b) Weld profile
c) NDT
d) All of the above
410. According to the convention of BS 499 (UK) the arrow line shall do which of the following?
a) Shall touch the joint intersection
b) Shall not be parallel to the drawing
c) Shall point towards a single plate preparation
d) All of the above
412. The main areas of responsibility within the application standard is generally divided into which of the
following?
a) The client
b) The contractor
c) The third party inspection authority
d) All of the above
413. When looking at weld symbols on drawings the reference of the symbol must do which of the following?
a) lt must touch the arrow line
b) It should not touch the arrow line
c) It must touch only if the arrow is going to the right
d) It must touch only if the arrow is going to the left
415. A code of practice is generally a legally binding document containing rules and laws required to_ a
specific topic
a) Design and test
b) Accept and test
c) Negotiate and test
d) Understand and test
417. Most major application codes and standards contain major sections, which are dedicated to?
a) Design
b) Manufacture
c)Testing
d) All of the above
419. Laminations are caused through inclusions and are caused when plate is ?
a) Welded
b) Cut with gas that is impure
c) Rolled
d) Arc air having too much pressure
420. Laps are caused during rolling when overlapped metal does not fuse to ? the and is caused by?
a) Base metal
b) Insufficient temperature
c) Pressure
d) All of the above
423. Which defect is likely to be caused by too high amperage for the position?
a) Slag
b) Undercut
c) Porosity
d) Root concavity
424. Which defect is likely to be caused by in-correct root gap or root face?
a) Porosity
b) Slag
c) Lack of penetration
d) Slag
429. The amount of current that can safely carried by a conductor in a period of time is called ?
a) Cycle
b) Amperage circuit
c) Voltage circuit
d) Duty cycle
430. In MMA and TIG welding the arc length is controlled by?
a) Automatically controlled
b) Machine controlled
c) Welder controlled
d) All of the above
431. When the arc length is increased the voltage to maintain the arc will need to?
a) Decrease
b) Increase
c) Remain the samme
d) This will depend on the electrode being used
432. The voltage that maintains the arc once it is created is termed the welding or arc voltage. The
conducting path produced is termed the?
a) Arc column
b) Welding column
c) Plasma column
d) Voltage column
433 Electrodes that give a very high level of penetration is cause by the producing of which gas?
a) Argon
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b) Helium
c) Phosgene
d) Hydrogen
434. In submerged are welding the gas sheild is produced from the combustion of ?
a) Gases
b) Molten liquids
c) Compounds
d) All of the above
435. What types of high intensity energy beams are associated with certain welding
processes?
a) Laseer
b) Electron beamn
c) Plasma
d) All of the above
436. We can use the heat generated by friction (and pressure) to weld components together. The joint is
made with material face in what state?
a) Plastic state
b) Static state
c) Elastic state
d) Plasma state
c) Cleaning
d) All of the above
440. In the Electro Slag welding process where the resistance is offered by the molten slag this is know as
one of the following?
a) Resistance Heating procesS
b) Coalescence heating process
c) Pre heating process
d) Resistance cooling process441. As an inspector which would be the most important statement
a) The material is the correct type
b) The welder is qualified
c) The welder is qualified for the procedure being used
d) The electrode is the correct type
442. In TIG welding which of the following should the welding inspector check?
a) Material type
b) Thickness
c) Diameter and type of tungsten being used
d) All of the above
444. The correct gas flow rate should be used for which of the following reasons ?
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445. In TIG welding the gas cut off delay is often used for which of the following reasons
a) To save gas costs
b) When welding materials would oxidize at high temperatures
c) This shut off is for safety
d) When the materials would oxidize at low temperatures
446. In TIG welding too fine an angle of the electrode will produce which of the following?
a) Melting of the tungsten tip
b) Great absorption of the gas
c) This will an adverse affect on any hydrogen gas that is used
d) Tungsten cannot melt as the temperature used in TIG welding is not high
447. Helium gas will give which one of the these properties?
a) Higher penetration due to the hotter arc
b) Low penetration due to hotter arc
c) Helium will make no difference to penetration compared to other gasses
d) High penetration due to a cooler arc
449. In TIG welding the addition of hydrogen is added with argon for welding which type steel?
a) Carbon steel
b) Copper
c) Austenitic stainless steel
193
d) Aluminum
452. The polarity used for welding of steels in TIG welding is always
a) DC Negative
b) DC Positive
c) AC
d) All of the above
453. In TIG welding the most common types used are which of the following?
a) Thoriated
b) Ceriated
c) Zirconiated
d) All of the above
454. What are the reasons that nitrogen is used as a gas in TIG welding?
a) To stabilize the arc when welding carbon steel
b) It is used to weld copper
c) It is used to weld material which is P1 material in ASME
d) Nitrogen should never be used as a gas
456. The higher the level of current in TIG welding will affect which of the below?
a) Higher the level of penetration
b) Lower the level of penetration
c) Lower level of fusion
d) The higher the level of current will cause slag
457. In TIG welding the polarity is AC for the welding of which type of metals?
a) Carbon steel
b) Stainless steel
c) Austenitic stainless steel
d) Aluminum and its alloys
d) Type of amperage461. Which defect in MIG welding is likely to be caused by the loss of shielding gas?
a) PorosIty
b) Lack of penetration
c) Root concavity
d) Undercut
462. A major advantage of flux cored arc welding is which one of the following?
a) Extremely good penetration
b) It has duel shielded wires
c) t is semi automatic
d) All of the above
463. When welding with MIG the welding inspector should check which of the following?
a) Gas tlow rate
b) Wire speed rate
c) Essential variables
d) All of the above
465. Which type of metal transfer in MIG welding is likely to cause lack of sidewall fusion?
a) Spray transfer
b) Pulsed transter
c) Dip transfer
d) Synergic pulsed transfer
c) Helium
d) Oxygen
467. Inductance causes a backpressure of voltage to occur in the wire, what will be the
a) main effect of this?
b) Increase in spatter
c) Decrease in spatter
d) Increase in slag
e) Decrease in slag
468. In MIG welding the higher level of de-oxidants will give the lower chance of which defect?
a) Lack of fusion
b) Lack of penetration
c) Slag
d) Porosity
470. What will automatically happen when we increase the wire feed speed?
a) The current will decrease
b) The current will increase
c) The curent will stay the same regardless of the speed
d) There is only one set speed that wire can be fed
471. Which is the most important setting in spray transfer method in MIG welding?
a) Amperage
b) Wire speed
c) Wire diameter
d) Voltage
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472. In MIG welding which type of metal transfer will produce low amperage?
a) DIp
b) Spray
c) Pulse Globular
473. Which type of metal transfer used in MIG welding uses dip and spray?
a) Pulsed transfer
b) ergic pulsed transfer
c) Globular transter
d) None of the above
474. In MIG welding which type of metal transfer fires a single globule of metal across the arc gap?
a) Globular transfer
b) Spray transfer
c) Dip transter
d) Pulsed transfer
475. In dip transfer method used in MIG welding The wire will do one of the following ?
a) Pulse
b) Spray
c) Short circuit
d) Dip and spray
476. In spray transfer method used in MIG welding, what is the progression of the weld?
a) Up hand
b) Any progression
c) Down-hand
d) None of the above
c) SAW
d) FCAW
479. Metal active gasses used in MIG welding could include which of the following?
a) Carbon dioxide
b) Argon
c) Oxygen
d) Any of the above in a mixture
a) Lack of fusion
b) Lack of root fusion
c) Lack of interun fusion
d) Lack of sidewall fusion
486. Which NDT method will best reveal lack of sidewall fusion?
a) Radiography
b) Ultrasonic testing
c) Magnetic particle inspection
d) Penetrant testing
d) Film scatte
491. When carrying out Magnetic Particle Inspection the material should be which of the following
a) Paramagnetic
b) Diamagnetic
c) Ferromagnetic
d) All of the abovee
492. Which type of flux used in Submerged Arc welding is mixed together and baked at a very high
temperature?
a) Fused
b) Agglomerated
c) Bonded
d) All of the above
495. What is the main prpose of the copper coating of steel MIG/MAG welding wire?
a) To impove arc stability
b) To improve penetration
c) To reduce the level of coiefficient of friction which could cause corrosion
d) All of the above
496. In MIG welding when using pure argon in spray or pusle transfer in the welding of certain steels will
produce what type of root condition?
a) Good penetration
b) Poor penetration
c) Hoot suckback
d) Lack of root fusion
497. When welding with the MAG process using Argon with 1-2% Oxygen is used only for what type of
steel?
a) Martinsetic Stainless Steel
b) Austinetic Stainless Steel
c) Ferretic Stainless Steel
d) All of the above
499. Which backing gas used in TIG welding produces and deep penetrating arc
a) Carbon dioxide
202
b) Argoon
c) Oxygen
d) Helium
504. When carrying out heat treatment which type of heat treatment would not be carried out in a furnace?
a) Pre-heating
b) Annealing
c) Hardening
d) Tempering
505. The tools that an inspector may us to measure the temperatures could include which of the following?
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507. We use heat treatments for the which of the following reasons?
a) Change the properties of a metal
b) Method of controlling formations of structures
c) Expansion/ contractional forces during welding
d) All of the above OrCes during welding
508. In heat treatment the holding or soaking time is generally calculated as?
a) One hour for every 20mm of thicknesss
b) Two hours for every 25 mm of thickness
c) One hour for every 25 mm of thickness
d) Two hours for every 20mm of thickness
509. A special technique of welding to control distortion is called which of the followingg?
a) Tempered welding
b) Annealed welding
c) Back step welding
d) Special step welding
511. A high percentage of residual stress can be removed by which of the following?
a) Welding
b) Alloying
c) Heat treatmentss
d) All of the above
512. The volume of weld metal in a joint will have what effect?
a) Expansion and contraction which could cause distortion
b) The volume of weld metal will have no affect on distortion
c) The shapes of the bevel will not affect distortion
d) None of the statements are correct
513. Where expansion and contraction are taking place as the weld cools and each weld element acts as a
fulcrum is called?
a) Stress relieving
b) Coolation
c) Reversal of stresses
d) Froward stresses
514. Offsetting of plates to pre-determined angle is carried out for the which of the following reasons?
a) To allow distortion to take place
b) To stop distortion
c) Plates are never offset to allow distortion
d) None of the above
515. The stresses that remain in a weld after welding are called ?
a) Post stresses
b) Relieving stresses
c) Residual stresses
d) After welding stress
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516. The degree of distortion that occurs is dependant on the ability of the material to do the which of the
following?
a) Accept the stresses and deformation
b) Distortion will only occur in the base metal
c) Distortion will only occur in the weld metal
d) Resist these stresses and deformation
519. Whena crack is found what can we do to avoid further propagation of the crack?
a) The crack should be drilled
b) The crack should be heated
c) The crack should be welded up
d) The crack should be closed using a heating torch
520. When a defect is removed we should use NDT to do which of the following?
a) To confirm the length of the defect
b) To confirm that the defect has been completely excavated from the area
c) To confirm the depth of the defect
d) All of the aboveow to store basic electrodeseat of the gas521. We use pre-heating to achieve which of
the following?
a) To control the structure of the weld metal in the HAZ on cooling
b) To improve diffusion of gas molecules through an atomic structure
c) To control the effects of expansion and contraction
206
524. When a steel will not return to it original dimensions due to yield this is expressed as?
a) Plastically deformed
b) Elastically deformed
c) Normally deformed
d) All of the above
525. When we heat steel the higher the temperature will produce?
a) Less elastic strain
b) More elastic strain
c) The heat will have no effect on elasticity
d) Elastic strain is never converted into plastic strain
a) Hardness
b) Toughness
c) Carbon content
d) All of the above
530. Tempering is a sub critical heat treatment process that used only after?
a) Normalizing
b) Annealing
c) Hardening
d) Softening
531. When carrying out tempering to steel ,we do which of the following?
a) Re-balance the steel
b) Un-balance the steel
c) Tempering will have little affect on the steel
d) None of the above
532. When we normalize steel what will be the affect on the steel?
a) Toughness and impact strength will improve
b) 1ougnness and impact will be give the metal less strength
c) Toughness will improve
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533. When we normalize steel what will be the affect on the steel?
a) Strength and hardness are decreased
b) Strength and hardness are increased
c) Normalizing steel will have no affect on hardness
d) Normalizing steel will have no affect on strength
534. For plain carbon steel ,the steel must have a sufficiently high carbon content to be hardened by
thermal treatment which is generally considered as?
a) More than 0.3%
b) More than 0.1%
c) More than 0.01%
d) More than 0.2%
535. The term annealing generally means to bring the metal, or alloy to its?
a) Hardest and ductile natural condition
b) Softest and most ductile natural condition
c) Hardest and tempered condition
d) Softest and quenched condition
537. When we normalize steel what will be the affect on the steel?
a) Softness and ductility will increase
b) Softness and ductility will decrease
c) Softness will not be affected when we normalize steel
d) This will add more carbon content to steel
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538. What is the annealing temperature of plain carbon steel less that 0.2% carbon content?
a) 900c to 1100c
b) 850c to 950c
c) 600c to 750c
d) 400c to 550c
540. In sub critical annealing the steel is heated to what temperature below the lowercr itical temperature?
a)723C
b) 800c
c) 850c
d) 900c
545. Careful consideration must be given to the Mn/S ratio, which should be in the region of which of the
following?
a) 30 1
b) 25:1
c) 10: 1
d) 40 1
546. The minimum critical factors for hydrogen cracking could be which of the followin?
a) Hydrogen content more than 15ml for every 100 gm of deposited weld metal
b) Hardness more than 350 VPN
c) Temperature less than 300c
d) All of the above
547. To control hydrogen cracking which of the following could be carried out?
a) Pre heating
b) Rapidly cool the steel
c) Heat the steel above the critical temperature
d) The creation of martinsite in the grain structure would avoid any hydrogen cracking
548. Elements to be considered when pre - heating are which of the following?
a) Hardenability
b) Arc energy
c) Thickness
d) All of the above
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549. Which types of arc cutting and gouging are generally used?
a) Conventional cutting/gouging electrodes
b) Oxy-arc cutting/gouging
c) Arc air-air cutting/gouging
d) All of the above
550. Which type of material is used for the consumable for Arc - Air cutting/gouging?
a) Carbon steel coatea
b) Stainless steel coated
c) Copper coated
d) Manganese coated
551. When considering any type of weld cracking mechanism which elements must be present for its
occurrence
a) Stress
b) Restraint
c) Susceptible microstructure
d) All of the above
552. When using Oxy- Acetylene and oxidizing flame is used for mainly what type of welding?
a) Stainless steel welding
b) Bronze welding
c) Carbon steel welding
d) All of the above
553. When using Oxy- Acetylene a carburizing flame is used for mainly what type of welding?
a) Stainlesss steel welding
b) Hard facing welding
c) Bronze welding
d) None of the above
a) Nozzle
b) Pressure
c) Gas
d) All of the above
556. If a pressurized cylinder was left in the horizontal position ,how long should it left in the upright
position before it can be safely used?
a) Minimum of 20 minutes
b) Minimum of 40 minutes
c) Minimum of 10 minutes
d) Minimum of 60 minutes
557. What is the highest temperature achievable when acetylene is combusted with the upright position
before it can be safely used?
a) 3200C
b) 3000CC
c) 2500C
d) 2000C
559. It is the duty of the welding inspector to ensure that which of the following safe
a) working practices are carried out?
b) Welding/cutting process safety
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560. When working with electrical power we must ensure a good working practice and be especially vigilant
in?
a) Wet
b) Damp
c) Low supply voltage will be used (110V)
d) All of the above