Welding Inspection, Steels - WIS 5: Multi - Choice End of Course Assessment Question Paper (MSR-AWI-1)

THE WELDING INSTITUTE
Welding Inspection, Steels – WIS 5
Multi – Choice End of Course Assessment

Question Paper (MSR-AWI-1)
Name: ……………………………………………….
Answer all questions
1. 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.
2. Which of the following charpy test pieces form a carbon manganese steel
weld, welded with a high heat input is likely to have the lowest toughness
value?
a. Test piece taken from parent metal.
b. Test piece taken from weld metal.
c. Test piece taken from HAZ.
d. All of the above values will be the same.
3. 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.
WIS 5 End of course assessment Qu paper MSR-AWI-1 1 of 8

issue 4 Date: 05/06/03
4. Which of the following is applicable for a none planar defects?

a. They are always repaired.
b. Their existence will result in the removal of the entire weld.
c. They are not usually as significant as planar defects.
d. They can only be detected using radiography.
5. Lamellar tearing is:

a. A product defect caused during the manufacturing of certain steels
b. A crack type, which occurs in the parent material due to welding strains
acting in the short transverse direction of the parent material.
c. A type of hot crack associated with impurities (sulphur, carbon and
phosphorous).
d. A type of crack that occurs in the weld or parent material due to cyclic
stresses.
6. Which of the following additions to an electrode flux acts as a stabilizer?

a. Sodium silicate.
b. Silicon.
c. Phosphorous.
d. Sulphur.
7. Which of the following elements if present in significant quantities in steel may

lead to cold shortness.
a. Sulphur.
b. Phosphorous.
c. Silicon.
d. Copper.

8. 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.
9. Austenitic stainless steel can be readily identified by:

a. Lack of magnetic attraction.
b. Its extreme hardness.
c. Very shinny appearance.
d. None of the above.
10. Which of the following is likely to be considered an essential variable on a

welder qualification test?
a. A change from an electrode classified to AWS E6011 to an electrode
E6012.
b. A change in preheat temperature from 50oC to 100oC.
c. A change in welding position from PA to PF.
d. All of the above
11. 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 to hydrogen entrapment.
c. High hardness.
d. High susceptibility to lack of fusion.

12. Which of the following will influence 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.
13. 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.
14. It is a requirement to excavate a crack in a low carbon steel 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 check with DPI
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.
15. The heat affected zone associated with a fusion weld:

a. Usually has the highest tensile strength.
b. Always exists in a fusion-welded joint.
c. Is usually the area of a welded joint that is the most susceptible to
HICC?
d. All of the above.

16. Which of the following 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.
17. 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 process.
d. A mechanised MAG process.
18. The purpose of normalising steel:

a. To modify the grain structure by making it more uniform in order to
improve mechanical properties.
b. To soften a material for extensive machining.
c. To reduce fracture toughness.
d. To reduce ductility.
19. Hot cracking in steel weldments occurs:

a. Along the fusion line
b. In the last metal to solidify.
c. Weld centre line
d. In the area of lowest dilution.

20. Generally the most suitable method of detecting lack of sidewall fusion on a
single-V butt weld (30o to 35o bevel angles) would be:
a. Ultrasonic testing.
b. Radiographic testing
c. Magnetic particle testing
d. Both a and b.
e. All of the above
21. 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
22. Lamellar tearing has occurred in a steel fabrication BEFORE welding, which of
the following test methods could have detected it?
a. Radiographic testing.
b. Ultrasonic testing.
c. Magnetic particle testing.
d. It could not be found by any testing method.
23. In x-ray radiography, if the kilo voltage is increase:

a. The radiographic sensitivity will increase.
b. The depth of penetration will reduce.
c. The depth of penetration will increase.
d. Kilo voltage has very little effect on penetration.

24. You are to oversee the arc welding of some machined fittings and find that
they are cadmium plated. What would you do in this situation?
a. Permit the welding to proceed.
b. Permit the welding to proceed with fume extraction.
c. Stop the operation at once.
d. Advise the welders to drink milk then proceed.
25. 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.
26. Which of the following flame types would you expect to be used for the cutting
of mild steel?
a. Carburising flame
b. Oxidising flame.
c. Reducing flame.
d. Neutral flame.
27. 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

28. The main reason for toe blending on certain welded steel components is:
a. Corrosion considerations.
b. Fatigue life.
c. Appearance.
29. Which of the following welding process require a drooping characteristic power
source
a. TIG and MMA.
b. MIG/MAG and MMA.
c. TIG and SAW (less than 500 amps)
30. When considering the MIG/MAG welding process which of the following metal
transfer modes would be the best suited to the welding of thick plates over 25
mm, flat welding position.
a. Dip transfer.
b. Pulse transfer.
c. Spray transfer.
d. Globular transfer.


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THE WELDING INSTITUTE

Welding Inspection, Steels – WIS 5

Multi – Choice End of Course Assessment

3. Why is the arc shielded, when using an arc welding process?

WIS 5 End of course assessment Qu paper MSR-AWI-1 1 of 8

4. Which of the following is applicable for a none planar defects?

5. Lamellar tearing is:

6. Which of the following additions to an electrode flux acts as a stabilizer?

7. Which of the following elements if present in significant quantities in steel may

WIS 5 End of course assessment Qu paper MSR-AWI-1 2 of 8

8. A black triangular flag used in conjunction with a weld symbol as to EN 22553

9. Austenitic stainless steel can be readily identified by:

10. Which of the following is likely to be considered an essential variable on a

WIS 5 End of course assessment Qu paper MSR-AWI-1 3 of 8

14. It is a requirement to excavate a crack in a low carbon steel welded

15. The heat affected zone associated with a fusion weld:

WIS 5 End of course assessment Qu paper MSR-AWI-1 4 of 8

18. The purpose of normalising steel:

19. Hot cracking in steel weldments occurs:

WIS 5 End of course assessment Qu paper MSR-AWI-1 5 of 8

21. Ultrasonic testing is preferable to radiographic testing due to:

23. In x-ray radiography, if the kilo voltage is increase:

WIS 5 End of course assessment Qu paper MSR-AWI-1 6 of 8

WIS 5 End of course assessment Qu paper MSR-AWI-1 7 of 8

WIS 5 End of course assessment Qu paper MSR-AWI-1 8 of 8

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