MCQ Workshop Tchnology

[16/01, 8:27 PM] +91 90977 55891: Basic Mechanical Engineering MCQ PDF Part 1 Harikesh Yadav ME
MCQ PDF, Uncategorized May 24, 2017
1) A flat surface can be produced by a lathe machine, if the cutting tool moves _____
a. parallel to the axis of rotation of workpiece
b. perpendicular to the axis of rotation of workpiece
c. at an angle of 450
d. none of the above
ANSWER: perpendicular to the axis of rotation of workpiece
2) What is the function of cone pulley drive in lathe machines?
a. Drive the lead screw
b. Change the spindle speed
c. Drive the tail-stock
d. All of the above
ANSWER: Change the spindle speed
3) Which of the following is a mechanism for mechanized movements of the carriage along longitudinal
axis?
a. Cross-slide
b. Compound rest
c. Apron
d. Saddle
ANSWER: Apron
4) The function of taper turning process is to ____
a. reduce the diameter of a workpiece along its length
b. reduce the diameter by removing material about an axis offset from the axis of workpiece
c. remove the material from end surface of a workpiece
d. all of the above
ANSWER: reduce the diameter of a workpiece along its length
5) The process of bevelling sharp ends of a workpiece is called as _______

a. knurling
b. grooving
c. facing
d. chamfering
ANSWER: chamfering
6) In an isolated system, ________ can be transferred between the system and its surrounding.
a. only energy
b. only mass
c. both energy and mass
d. neither energy nor mass
ANSWER: neither energy nor mass
7) Which of the following is an extensive property?
a. Volume
b. Pressure
c. Viscosity
d. All of the above
ANSWER: Volume
8) How is absolute pressure measured?
a. Gauge pressure + Atmospheric pressure
b. Gauge pressure – Atmospheric pressure
c. Gauge pressure / Atmospheric pressure
d. None of the above
ANSWER: Gauge pressure + Atmospheric pressure
9) The extensive properties of a system, _______
a. are independent of the mass of the system
b. depend upon temperature of the system
c. depend upon the mass of the system

ANSWER: depend upon the mass of the system
10) An isobaric process, has constant _____
a. density
b. pressure
c. temperature
d. volume
ANSWER: pressure
11) Which of the following energy conversion devices convert heat into work?
a. Electrical generators
b. I. C engines
c. Condensers
d. All of the above
ANSWER: I. C engines
12) Lancashire boilers are ______
a. externally fired boilers
b. internally fired boilers
c. both a. and b.
ANSWER: internally fired boilers
13) Smoke tube boilers have large water to steam ratio, hence _____
a. have high evaporation rates

b. are slow in operations
c. temperature stresses inducing failure of feed water arrangement are maximum
d. all of the above
ANSWER: are slow in operations
14) Which of the following statements are false for reaction turbines?
1. Flow of water can be regulated without any losses
2. It works on the principle of impulse and reaction
3. They are suitable for low heads
4. Water flows at constant atmospheric pressure over the runner
a. 1, 2 and 3
b. 2 and 4
c. 1 and 4
d. 1, 2, 3 and 4
ANSWER: 1 and 4
15) In four stroke cycle engine, cycle is completed in ______
a. two strokes of the piston
b. two revolutions of the crankshaft
c. three strokes of the piston
d. four revolutions of the crankshaft
ANSWER: two revolutions of the crankshaft
16) Which type of bearings are known as anti friction bearings?
a. Sliding contact bearings

b. Rolling contact bearings
c. Both a. and b.
d. None of the above
ANSWER: Rolling contact bearings
17) In roller bearings which type of rolling elements are used?
a. Cylindrical rollers
b. Taper rollers
c. Spherical rollers
d. All of the above
ANSWER: All of the above
18) Why is the load carrying capacity low in ball bearings?
1. Due to line contact between inner race and the ball
2. Due to greater axial dimensions
3. Due to less radial dimensions
4. Due to point contact between inner race and the
[16/01, 8:40 PM] +91 90977 55891: 1. Strain is defined as the
ratio of
(a) change in volume to original volume
(b) change in length to original length
(c) change in cross-sectional
area to original cross-sectional area
(d) any one of the above
(e) none of the above.
Ans: d
2. Hooke’s law holds good up to

(a) yield point
(b) limit of proportionality
(c) breaking point
(d) elastic limit
(e) plastic limit.
Ans: b
3. Young’s modulus is defined as the ratio of
(a) volumetric stress and volumetric strain
(b) lateral stress and lateral strain
(c) longitudinal stress and
longitudinal strain
(d) shear stress to shear strain
(e) longitudinal stress and lateral strain.
Ans: c
4. The unit of Young’s modulus is
(a)mm/mm
(b)kg/cm
(c)kg
(d)kg/cm2
(e)kg cm2.
Ans: d
5.Deformation per unit length in the direction of force is known
as
(a)strain
(b) lateral strain
(c) linear strain

(d) linear stress
(e) unit strain.
Ans: c
6. It equal and opposite forces applied to a body tend to elongate it, the
stress so produced is called
(a) internal resistanpe
(b) tensile stress
(c) transverse stress
(d) compressive stress
(e) working stress.
Ans: b
7. The materials having same elastic
properties in all directions are called
(a) ideal materials
(b) uniform materials
(c) isotropic materials
(d) paractical materials
(e) elastic materials.
Ans: c
8. A thin mild steel wire is loaded by adding
loads in equal increments till it breaks. The extensions noted with increasing
loads will behave as under
(a) uniform throughout
(b) increase uniformly
(c) first increase and then decrease

(d) increase uniformly first and then
increase rapidly
(e) increase rapidly first and then
uniformly.
Ans: d
9. Modulus of rigidity is defined as the
ratio of
(a) longitudinal stress and longitudinal
strain
(b) volumetric stress and volumetric strain
(c) lateral stress and lateral strain
(d) shear stress and shear strain
(e) linear stress and lateral strain.
Ans: d
10. If the radius of wire stretched by a load
is doubled, then its Young’s modulus will be
(a) doubled
(b) halved
(c) become four times
(d) become one-fourth
(e) remain unaffected.
Ans: e
11. The ultimate tensile stress of mild steel
compared to ultimate compressive stress is
(a) same
(b) more
(c) less
(d) more or less depending on other factors
(e) unpredictable.
Ans: b
12. Tensile strength of a material is
obtained by dividing the maximum load during the test by the
(a) area at the time of fracture
(b) original cross-sectional area
(c) average of (a) and (b)
(d) minimum area after fracture
Ans: b
13. The impact strength of a material is an
index of its
(a) toughness
(b) tensile strength
(c) capability of being cold worked
(d) hardness
(e) fatigue strength.
Ans: a
14. The Young’s modulus of a wire is defined
as the stress which will increase the length of wire compared to its original
length
(a) half
(b) same amount
(c) double
(d) one-fourth
(e) four times.
Ans: b
15. Percentage reduction of area in
performing tensile test on cast iron may be of the order of
(a) 50%
(b) 25%
(c) 0%
(d) 15%
(e) 60%.
Ans: c
16. The intensity of stress which causes unit
strain is called
(a) unit stress
(b) bulk modulus
(c) modulus of rigidity
(d) modulus of elasticity
(e) principal stress.
Ans: d
17. True stress-strain curve for materials is
plotted between
(a) load/original cross-sectional area and
change in length/original length
(b) load/instantaneous cross-sectional area
original area and log.
(c) load/instantaneous cross-sectional area

and change in length/original length
(d) load/instantaneous area and instantaneous
area/original area
Ans: b
18. During a tensile test on a specimen of 1 cm cross-section, maximum load
observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate
tensile strength of specimen is
(a) 4 tonnes/cm2
(b) 8 tonnes/cm2
(c) 16 tonnes/cm2
(d) 22 tonnes/cm2
Ans: b
19. For steel, the ultimate strength in shear
as compar
[25/01, 6:31 PM] +91 90977 55891: Surface plate is used to check the trueness of flat surfaces.
A. True
B. False
Answer: Option A
Explanation:
No answer description available for this question. Let us discuss.
View Answer Discuss
2.
A zinc diffusion process is called

A. galvanising
B. anodising
C. parkerising
D. sherardizing
Answer: Option D
Explanation:
View Answer Discuss
3.
The accuracy of micrometers, calipers, dial indicators can be checked by a
A. feeler gauge
B. slip gauge
C. ring gauge
D. plug gauge
Answer: Option B
Explanation:
View Answer Discuss
4.
The type of file used for a wood work is
A. single-cut file
B. double cut file
C. rasp-cut file
D. any one of these
Answer: Option C
Explanation:
View Answer Discuss
5.
A taper provided on the pattern for its easy and clean withdrawl from the mould is known as
A. machining allowance
B. draft allowance
C. shrinkage allowance
D. distortion allowance
Answer: Option B
Explanation:
View Answer Discuss
[25/01, 6:35 PM] +91 90977 55891: 6.
In arc welding, the electric arc is produced between the work and the electrode by
A. voltage
B. flow of current
C. contact resistance
D. all of these
Answer: Option C
Explanation:
View Answer Discuss

7.
In a centrifugal casting method
A. core is made of sand
B. core is made of ferrous metal
C. core is made of non-ferrous metal
D. no core is used
Answer: Option D
Explanation:
View Answer Discuss
8.
The draft or taper allowance on casting is generally
A. 1 to 2 mm/m
B. 2 to 5 mm/m
C. 5 to 10 mm/m
D. 10 to 15 mm/m
Answer: Option A
Explanation:
View Answer Discuss
9.
Which of the following welding process uses non-consumable electrodes?
A. TIG welding
B. MIG welding
C. Manual arc welding

D. Submerged arc welding
Answer: Option A
Explanation:
View Answer Discuss
10.
In a bilateral system of tolerance, the tolerance is allowed on
A. one side of the actual size
B. one side of the nominal size
C. both sides of the actual size
D. both sides of the nominal size
Answer: Option D
Explanation:
View Answer Discuss
[25/01, 6:41 PM] +91 90977 55891: In a hot chamber die casting machine
A. ferrous alloys with low melting temperature are casted
B. ferrous alloys with high melting temperature are casted
C. non-ferrous alloys with low melting temperature are casted
D. non-ferrous alloys with high melting temperature are casted
Answer: Option C
Explanation:

View Answer Discuss
12.
The chisel used for cutting key ways is
A. flat chisel
B. cape chisel
C. round nose chisel
D. diamond pointed chisel
Answer: Option B
Explanation:
View Answer Discuss
13.
The temperature at which the new grains are formed in the metal is called
A. lower critical temperature
B. upper critical temperature
C. eutectic temperature
D. recrystallisation temperature
Answer: Option D
Explanation:
View Answer Discuss
14.
Thread rolling is restricted to
A. ferrous materials
B. ductile materials
C. hard materials
D. none of these
Answer: Option B
Explanation:
View Answer Discuss
15.
In sheet metal blanking, shear is provided on punches and dies so that
A. press load is reduced
B. good cut edge is obtained
C. warping of sheet is minimised
D. cut blanks are straight
Answer: Option A
Explanation:
[25/01, 6:45 PM] +91 90977 55891: 16.
In welding copper alloys with TIG arc welding
A. direct current with straight polarity is used
B. direct current with reversed polarity is used
C. alternating current is used
D. any one of these
Answer: Option A
Explanation:
View Answer Discuss
17.
The algebraic difference between the minimum limit and the basic size is called
A. actual deviation
B. upper deviation
C. lower deviation
D. fundamental deviation
Answer: Option C
Explanation:
View Answer Discuss
18.
The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame.
A. same as
B. less than
C. more than
Answer: Option B
Explanation:
View Answer Discuss
19.
Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?
A. Drawing
B. Extrusion
C. Rolling
D. Extrusion and rolling
Answer: Option D
Explanation:
View Answer Discuss
20.
A saw which cuts wood during the return stroke of the saw is known as
A. push saw
B. pull saw or draw saw
Answer: Option B
Explanation:
View Answer Discuss
[25/01, 6:48 PM] +91 90977 55891: 21.
The low pressure acetylene is produced at the welding site by the chemical reaction between water and
calcium carbonate.
A. Correct
B. Incorrect
Answer: Option B
Explanation:
View Answer Discuss

22.
The fullers are used
A. for finishing flat surfaces
B. for necking down a piece of work
C. for punching a hole
D. to finish the punched hole
Answer: Option B
Explanation:
View Answer Discuss
23.
The cold chisels are made by
A. drawing
B. rolling
C. piercing
D. forging
Answer: Option D
Explanation:
View Answer Discuss
24.
The property of sand due to which it evolves a great amount of steam and other gases is called
A. collapsibility
B. permeability
C. cohesiveness
D. adhesiveness
Answer: Option B
Explanation:
View Answer Discuss
25.
The centrifugal casting method, is used for casting articles of
A. symmetrical shape about vertical axis
B. symmetrical shape about horizontal axis
C. irregular shape
D. non-ferrous metal only
Answer: Option B
Explanation:
[25/01, 7:07 PM] +91 90977 55891: 26.
Metal patterns are used for
A. small castings
B. large castings
C. complicated castings
D. large scale production of castings
Answer: Option D
Explanation:

View Answer Discuss
27.
The instrument which has all the features of try-square, bevel protractor, rule and scriber, is
A. outside micrometer
B. inside micrometer
C. depth gauge micrometer
D. combination set
Answer: Option D
Explanation:
View Answer Discuss
28.
When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.
A. horizontal core
B. vertical core
C. drop core
D. balanced core
Answer: Option C
Explanation:
View Answer Discuss
29.
The bloom is smaller than a billet.
A. True
B. False
Answer: Option B
Explanation:
View Answer Discuss
30.
In average work, the tolerance produced by investment casting method is
A. ±0.05 mm
B. +0.2 mm
C. +05 mm
D. +1 mm
Answer: Option A
[25/01, 7:10 PM] +91 90977 55891: 31.
The purpose of a riser is to
A. deliver molten metal into the mould cavity
B. act as a reservoir for the molten metal
C. feed the molten metal to the casting in order to compensate for the shrinkage
D. deliver the molten metal from pouring basin to gate
Answer: Option C
Explanation:
View Answer Discuss
32.
The blank diameter used in thread rolling will be
A. equal to minor diameter of the thread
B. equal to pitch diameter of the thread

C. a little larger than the minor diameter of the thread
D. a little larger than the pitch diameter of the thread
Answer: Option C
Explanation:
View Answer Discuss
33.
The cross-section of a chisel is usually
A. rectangular
B. square
C. hexagonal
D. octagonal
Answer: Option D
Explanation:
View Answer Discuss
34.
A plug gauge is used to check the diameter of shafts and studs.
A. Correct
B. Incorrect
Answer: Option B
Explanation:

View Answer Discuss
35.
In back-hand welding, the angle between the welding torch and the work is kept as
A. 30°-40°
B. 40°-50°
C. 50°-60°
D. 60°-70°
Answer: Option B
Explanation:
[25/01, 7:13 PM] +91 90977 55891: 36.
The machining allowance provided on patterns depends upon
A. type of casting metal
B. size and shape of casting
C. method of casting used
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
37.
In submerged arc welding, an arc is produced between a
A. carbon electrode and the work
B. metal electrode and the work
C. bare metal electrode and the work

D. two tungsten electrodes and the work
Answer: Option C
Explanation:
View Answer Discuss
38.
In shielded arc welding
A. large electrode is used
B. welding rod coated with slag is used
C. welding rod coated with fluxing material is used
D. none of the above
Answer: Option C
Explanation:
View Answer Discuss
39.
In a die casting method, the molten metal is forced into mould under high pressure.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss

40.
In a centrifugal casting method, the impurities are collected in the centre of the casting.
A. Yes
B. No
Answer: Option A
Explanation:
[25/01, 7:14 PM] +91 90977 55891: 41.
In a hot chamber die casting machine
A. melting pot is separate from the machine
B. melting pot is an integral part of the machine
C. melting pot may have any location
D. high temperature and pressure is used
Answer: Option B
Explanation:
View Answer Discuss
42.
The electrodes used in spot welding have a tip of
A. stainless steel
B. aluminium
C. copper
D. brass
Answer: Option C
Explanation:
View Answer Discuss
43.
Blanking and piercing operations can be performed simultaneously in a
A. simple die
B. progressive die
C. compound die
D. combination die
Answer: Option C
Explanation:
View Answer Discuss
44.
A pattern maker's shrinkage rule considers
A. all pattern allowances
B. only shrinkage allowance
C. all materials to be cast
D. all materials of the pattern
Answer: Option B
Explanation:
View Answer Discuss
45.
The tolerance produced by shell moulding process of casting is
A. +0.05 mm
B. ±0.2 mm
C. +0.5 mm
D. ±1 mm
Answer: Option B
[25/01, 7:14 PM] +91 90977 55891: 46.
Galvanising is a
A. zinc diffusion process
B. process of coating zinc by hot dipping
C. process used for making thin phosphate coating on steel
Answer: Option B
Explanation:
View Answer Discuss
47.
The ferrous metals require more machining allowance than non-ferrous metals.
A. True
B. False
Answer: Option A
Explanation:
View Answer Discuss
48.
In a four high rolling mill, there are four rolls out of which
A. one is working roll and three are backing up rolls

B. two are working rolls and two are backing up rolls
C. three are working rolls and one is backing up roll
D. all of the four are working rolls
Answer: Option B
Explanation:
View Answer Discuss
49.
When a pattern is made in three parts, the bottom part is known as a cope.
A. True
B. False
Answer: Option B
Explanation:
View Answer Discuss
50.
In __________ welding, the weld may be made either from left to right or from right to left.
A. fore-hand
B. back-hand
C. vertical
Answer: Option C
Explanation:
[25/01, 7:17 PM] +91 90977 55891: 1.
In a unilateral system of tolerance, the tolerance is allowed on

A. one side of the actual size
B. one side of the nominal size
C. both sides of the actual size
D. both sides of the nominal size
Answer: Option B
Explanation:
View Answer Discuss
2.
A two high rolling mill consists of two rolls which rotate
A. at the same speed and in the same direction
B. at the same speed but in opposite direction
C. at different speeds and in the same direction
D. at different speeds and in the opposite direction
Answer: Option B
Explanation:
View Answer Discuss
3.
Carburising flame is used to weld
A. steel, cast iron, copper, aluminium etc
B. brass and bronze
C. hard surfacing materials such as stellite
D. all of these
Answer: Option C
Explanation:
View Answer Discuss
4.
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be
welded)
A. t
B. 1.5 t
C. 3t
D. 6t
Answer: Option D
Explanation:
View Answer Discuss
5.
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should
be approximately
A. 42 mm
B. 44 mm
C. 46 mm
D. 48 mm
Answer: Option C
Explanation:
[25/01, 7:17 PM] +91 90977 55891: 6.

Cores are used to
A. form internal cavities in the casting
B. improve mould surface
C. form a part of a green sand mould
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
7.
The drawing down is a process of __________ the cross-section of a bar.
A. increasing
B. reducing
Answer: Option B
Explanation:
View Answer Discuss
8.
During hot working of metals
A. poor surface finish is produced
B. scale is formed on the metal surface
C. close tolerances can not be maintained
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
9.
When a pattern is made in three parts, the __________ is known as a drag.
A. bottom part
B. middle part
C. top part
Answer: Option A
Explanation:
View Answer Discuss
10.
Shrinkage allowance is made by adding to external dimensions and subtracting from internal
dimensions.
A. Agree
B. Disagree
Answer: Option A
Explanation:
View Answer Discuss
[25/01, 7:18 PM] +91 90977 55891: 11.
A jolt machine is used to

A. ram the sand harder at the pattern face with decreasing hardness towards the back of the
mould
B. ram the sand harder at the back of the mould and softer on the pattern face
C. produce uniform sand hardness throughout the mould
D. produce uniform packing of sand in the mould
Answer: Option A
Explanation:
View Answer Discuss
12.
If the sand is too fine, its permeability will be high.
A. True
B. False
Answer: Option B
Explanation:
View Answer Discuss
13.
Which of the following statement is wrong?
A. The mortise gauge has two scribing pins.
B. The gouges are chisels with a hollow shaped blade.
C. An auger is a planing tool
D. all of these
Answer: Option C
Explanation:
View Answer Discuss
14.
In a compound die
A. only one operation is performed at each stroke of the ram
B. two or more operations are performed simultaneously at the single stroke of the ram
C. two or more cutting operations are performed at one station of the press in every stroke of the
ram
D. both cutting and non-cutting operations are performed at one station of the press in every
stroke of the ram
Answer: Option C
Explanation:
View Answer Discuss
15.
A file removes the metal during
A. forward stroke
B. return stroke
C. both forward and return strokes
D. none of these
Answer: Option A
Explanation:
[25/01, 7:19 PM] +91 90977 55891: 16.
In spot welding, the spacing between two spot weld should not be less than
A. d
B. 1.5 d
C. 3d
D. 6d
Answer: Option C
Explanation:
View Answer Discuss
17.
Aluminium is the best material for making patterns because it is
A. light in weight
B. easy to work
C. corrosion resistant
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
18.
Gagger is used for cleaning the moulding sand.
A. Correct
B. Incorrect
Answer: Option B
Explanation:
View Answer Discuss
19.
In sheet metal work, the cutting force on the tool can be reduced by
A. grinding the cutting edges sharp
B. increasing the hardness of tool
C. providing shear on tool
D. increasing the hardness of die
Answer: Option A
Explanation:
View Answer Discuss
20.
In order to get uniform thickness of the plate by rolling process, one provides
A. camber on the rolls
B. offset on the rolls
C. hardening of the rolls
D. antifriction bearings
Answer: Option A
Explanation:
[25/01, 7:19 PM] +91 90977 55891: 21.
A pouring basin acts as a reservoir for the molten metal.
A. Agree
B. Disagree
Answer: Option A
Explanation:
View Answer Discuss
22.
In bending operation, the metal takes the shape of a punch.
A. Yes
B. No
Answer: Option A
Explanation:
View Answer Discuss
23.
The cold working of metals is carried out
A. at the recrystallisation temperature
B. below the recrystallisation temperature
C. above the recrystallisation temperature
D. at any temperature
Answer: Option B
Explanation:
View Answer Discuss
24.
Lancing is the operation of

A. cutting a sheet of metal in a straight line along the length
B. removal of metal to the desired shape from the edge of a plate
C. cutting a sheet of metal through part of its length and then bending the cut portion
D. bending a sheet of metal along a curved axis
Answer: Option C
Explanation:
View Answer Discuss
25.
Notching is the operation of
A. cutting a sheet of metal in a straight line along the length
B. removal of metal to the desired shape from the edge of a plate
C. cutting a sheet of metal through part of its length and then bending the cut portion
D. bending a sheet of metal along a curved axis
Answer: Option B
Explanation:
No answer description available for this question. Let
[25/01, 7:20 PM] +91 90977 55891: 26.
The shrinkage allowance for cast iron pattern is
A. 10 mm/m
B. 16 mm/m
C. 20 mm/m
D. 26 mm/m
Answer: Option A
Explanation:
View Answer Discuss
27.
An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.
A. True
B. False
Answer: Option B
Explanation:
View Answer Discuss
28.
A neutral flame is obtained by supplying
A. equal volumes of oxygen and acetylene
B. more volume of oxygen and less volume of acetylene
C. more volume of acetylene and less volume of oxygen
Answer: Option A
Explanation:
View Answer Discuss
29.
An oxidising process used for aluminium and magnesium articles is called
A. galvanising
B. anodising
C. parkerising
D. sheradising
Answer: Option B
Explanation:
View Answer Discuss
30.
For welding plates of thickness less than 5 mm, its edges
A. do not require bevelling
B. should be bevelled to a single-V or U-groove
C. should have a double-V or U-groove on one side
D. should have a double-V or U-groove on both sides
Answer: Option A
[25/01, 7:21 PM] +91 90977 55891: 31.
In order to cut mild steel, the cutting angle of chisel should be
A. 30°
B. 45°
C. 50°
D. 60°
Answer: Option D
Explanation:
View Answer Discuss
32.
The operation of straightening a curved sheet metal, is known as
A. drawing
B. squeezing
C. coining
D. planishing
Answer: Option D
Explanation:
View Answer Discuss
33.
The correct sequence for preparing a billet for extrusion process is pickling, alkaline cleaning, phosphate
coating and lubricating with reactive soap.
A. Yes
B. No
Answer: Option A
Explanation:
View Answer Discuss
34.
Tandem drawing of wires and tubes is necessary because
A. it is not possible to reduce at one stage
B. annealing is needed between stages
C. accuracy in dimensions is not possible otherwise
D. surface finish improves after every drawing stage
Answer: Option B
Explanation:
View Answer Discuss
35.
In a __________ , both cutting and non-cutting operations are performed at one station of the press in
every stroke of the ram.
A. simple die
B. progressive die
C. combination die
D. compound die
Answer: Option C
Explanation:
View Answer Discuss
[25/01, 7:22 PM] +91 90977 55891: 36.
Cold working requires much higher pressure that hot working.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
37.
The operation of bending a sheet of metal along a curved axis, is known as
A. plunging
B. notching
C. slitting
D. forming
Answer: Option D
Explanation:
View Answer Discuss
38.
In a __________ , two or more operations are performed simultaneously at the single stroke of the ram.
A. simple die
B. progressive die
C. combination die
D. compound die
Answer: Option B
Explanation:
View Answer Discuss
39.
A rip saw
A. is a two man saw
B. is used for cutting along the grains of wood
C. has a narrow blade with two wooden handles
D. all of the above

Answer: Option B
Explanation:
View Answer Discuss
40.
The welding set up is said to have reversed polarity when the work is connected to the negative terminal
and the electrode holder to the positive terminal.
A. Agree
B. Disagree
Answer: Option A
Explanation:
View Answer Discuss
[25/01, 7:24 PM] +91 90977 55891: 41.
For welding plates of thickness more than 12.5 mm, its edges
A. do not require bevelling
B. should be bevelled to a single-V or U-groove
C. should have a double-V or U-groove on one side
D. should have a double-V or U-groove on both sides
Answer: Option D
Explanation:
View Answer Discuss

42.
In electric resistance welding, voltage required for heating is
A. 1 to 5 volts
B. 6 to 10 volts
C. 11 to 20 volts
D. 50 to 100 volts
Answer: Option B
Explanation:
View Answer Discuss
43.
Most of the oxy-acetylene welding is done with
A. neutral flame
B. oxidising flame
C. carburising flame
D. all of these
Answer: Option A
Explanation:
View Answer Discuss
44.
The cutting edge of a chisel should be
A. hardened
B. tempered
C. hardened and tempered

D. case hardened
Answer: Option C
Explanation:
View Answer Discuss
45.
Scab is a casting defect which occurs as sand patches on the upper surface of a casting.
A. True
B. False
Answer: Option A
Explanation:
[25/01, 7:24 PM] +91 90977 55891: 46.
In order to check the clearance between two mating surfaces, a __________ gauge should be used.
A. ring
B. plug
C. feeler
Answer: Option C
Explanation:
View Answer Discuss
47.
When the weld is made from left to right, it is known as back-hand welding.
A. Agree
B. Disagree
Answer: Option A
Explanation:
View Answer Discuss
48.
The current in electric resistance welding can be regulated by
A. varying the input supply
B. changing the primary turns of the transformer
C. changing the secondary turns of the transformer
D. any one of the above
Answer: Option B
Explanation:
View Answer Discuss
49.
In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted.
A. low melting temperature
B. high melting temperature
Answer: Option B
Explanation:

View Answer Discuss
50.
A mortise gauge is a
A. striking tool
B. planing tool
C. boring tool
D. marking tool
Answer: Option D
Explanation:
View Answer Discuss
[25/01, 7:26 PM] +91 90977 55891: 1.
The casting method adopted for ornaments and toys of non-ferrous alloys, is
A. permanent mould casting
B. slush casting
C. die casting
D. centrifugal casting
Answer: Option B
Explanation:
View Answer Discuss
2.
In a cold chamber die casting machine
A. melting pot is separate from the machine
B. melting pot is an integral part of the machine

C. melting pot may have any location
D. low temperature and pressure is used
Answer: Option A
Explanation:
View Answer Discuss
3.
Structural sections such as rails, angles, I-beams are made by
A. hot rolling
B. hot drawing
C. hot piercing
D. hot extrusion
Answer: Option A
Explanation:
View Answer Discuss
4.
The minimum size of a billet is 10 cm x 10 cm.
A. Agree
B. Disagree
Answer: Option B
Explanation:

View Answer Discuss
5.
In welding magnesium with TIG arc welding, direct current with __________ is used.
A. straight polarity
B. reversed polarity
Answer: Option B
[25/01, 7:27 PM] +91 90977 55891: 6.
Cutting and forming operations can be performed in a single operation in a
A. simple die
B. progressive die
C. compound die
D. combination die
Answer: Option D
Explanation:
View Answer Discuss
7.
The teeth of hacksaw blade are bent
A. towards right
B. towards left
C. alternately towards right and left and every third or fourth left straight
D. may be bent in any direction
Answer: Option C
Explanation:

View Answer Discuss
8.
In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from
the melting pot to a chamber and forced into the closed die-section by applying hydraulic pressure upon
the plunger.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
9.
For cutting brass, the hacksaw blade should have __________ teeth per 25 mm.
A. 14
B. 24
C. 32
D. 40
Answer: Option A
Explanation:
View Answer Discuss
10.
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
A. shift
B. sand wash
C. swell
D. scab
Answer: Option B
Explanation:
View Answer Discuss
[25/01, 7:28 PM] +91 90977 55891: 11.
The cold chisels are made from
A. cast iron
B. mild steel
C. high speed steel
D. cast tool steel
Answer: Option D
Explanation:
View Answer Discuss
12.
To prevent the body of the blade from jamming in the saw cut, the teeth of blade are
A. strengthened
B. sharpened
C. set
D. all of these
Answer: Option C
Explanation:
View Answer Discuss
13.
A ring gauge is used to
A. check the diameter of shafts or studs
B. test the accuracy of holes
C. check the clearance between two mating surfaces
D. all of the above
Answer: Option A
Explanation:
View Answer Discuss
14.
A casting defect which results in general enlargement of a casting is known as
A. shift
B. sand wash
C. swell
D. scab
Answer: Option C
Explanation:
View Answer Discuss
15.
Rotary swaging
A. is extensively used for making bolts and rivets
B. is used for reducing the diameters of round bars and tubes by rotating dies which open and
close rapidly on the work
C. is used to improve fatigue resistance of the metal by setting up compressive stresses in its
surface
D. consists of pressing the metal inside a chamber to force it out by high pressure through an
orifice which is shaped to provide the desired form of the finished part
Answer: Option B
Explanation:
View Answer Discuss
[25/01, 7:28 PM] +91 90977 55891: 16.
The operation of cutting a number of holes evenly spaced in a regular pattern on a sheet of metal is.
called perforating.
A. Agree
B. Disagree
Answer: Option A
Explanation:
View Answer Discuss
17.
The metal is subjected to mechanical working for
A. refining grain size
B. reducing original block into desired shape
C. controlling the direction of flow lines
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
18.
During hot working of metals
A. porosity of the metal is largely eliminated
B. grain structure of the metal is refined
C. mechanical properties are improved due to refinement of grains
D. all of the above
Answer: Option D
Explanation:
View Answer Discuss
19.
The electron beam welding can be carried out in
A. open air
B. a shielded gas environment
C. vacuum
D. a pressurised inert gas chamber
Answer: Option C
Explanation:

View Answer Discuss
20.
In tungsten-inert gas arc welding, a __________ electrode is used.
A. consumable
B. non-consumable
Answer: Option B
Explanation:
[25/01, 7:29 PM] +91 90977 55891: 21.
The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
A. shearing
B. piercing
C. punching
D. blanking
Answer: Option B
Explanation:
View Answer Discuss
22.
In die casting, machining allowance is
A. small
B. large
C. very large
D. not provided
Answer: Option D
Explanation:
View Answer Discuss
23.
The welding set up is said to have straight polarity, when
A. work is connected to the positive terminal and the electrode holder to the negative terminal
B. work is connected to the negative terminal and the electrode holder to the positive terminal
C. work is connected to the positive terminal and the electrode holder is earthed
D. work is connected to the negative terminal and the electrode holder is earthed
Answer: Option A
Explanation:
View Answer Discuss
24.
A moving mandrel is used in
A. wiredrawing
B. tube drawing
C. metal cutting
D. forging
Answer: Option B
Explanation:
View Answer Discuss

25.
The most preferred process for casting gas turbine blades is
A. die casting
B. shell moulding
C. investment moulding
D. sand casting
Answer: Option B
[25/01, 7:30 PM] +91 90977 55891: 26.
The upsetting is a process of
A. increasing the cross-section of a bar
B. reducing the cross-section of a bar
C. joining the two surfaces of metal under pressure after heating
D. bending of a bar
Answer: Option A
Explanation:
View Answer Discuss
27.
If neutral flame is used in oxy-acetylene welding, both oxygen and acetylene cylinders of the same
capacity will be emptied at the same time.
A. Correct
B. Incorrect
Answer: Option A
Explanation:

View Answer Discuss
28.
Which of the following material can be used for making patterns ?
A. Aluminium
B. Wax
C. Lead
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
29.
The torch used for oxygen cutting is same as for oxy-acetylene welding.
A. Yes
B. No
Answer: Option B
Explanation:
View Answer Discuss
30.
According to Indian standards, the total number of tolerance grades are
A. 8
B. 12
C. 18
D. 20
Answer: Option C
[25/01, 7:31 PM] +91 90977 55891: 31.
Loam sand is a mixture of
A. 30% sand and 70% clay
B. 50% sand and 50% clay
C. 70% sand and 30% clay
D. 90% sand and 10% clay
Answer: Option B
Explanation:
View Answer Discuss
32.
A three high rolling mill consists of three rolls placed one above the other. Which of the following
statement is correct?
A. The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in
opposite direction.
B. The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in
opposite direction.
C. The bottom and middle roll rotate in the same direction.
D. any one of the above
Answer: Option B
Explanation:
View Answer Discuss
33.
The oxy-acetylene gas used in gas welding produce a flame temperature of

A. 1800°C
B. 2100°C
C. 2400°C
D. 3200°C
Answer: Option D
Explanation:
View Answer Discuss
34.
Metal patterns require __________ draft allowance than wooden patterns.
A. more
B. less
Answer: Option B
Explanation:
View Answer Discuss
35.
For gas welding, the presure desired at the welding torch for acetylene is
A. 7 to 103 kN/m2
B. 70 to 280 kN/m2
C. 280 to 560 kN/m2
D. 560 to 840 kN/m2
Answer: Option A
[25/01, 7:31 PM] +91 90977 55891: 36.
The process extensively used for making bolts and nuts is

A. hot piercing
B. extrusion
C. cold peening
D. cold heading
Answer: Option D
Explanation:
View Answer Discuss
37.
Spot welding is used for welding
A. lap joints in plates having 0.025 mm to 1.25 mm thickness
B. lap joints in plates having thickness above 3 mm
C. butt joints in plates having 0.025 mm to 1.25 mm thickness
D. butt joints in plates having thickness above 3 mm
Answer: Option A
Explanation:
View Answer Discuss
38.
Thermit welding is often used in
A. replacing broken gear teeth
B. repairing broken shears
C. joining rails, truck frames and locomotive frames etc.
D. all of the above
Answer: Option D
Explanation:
View Answer Discuss
39.
The directional solidification in casting can be improved by using
A. chills and chaplets
B. chills and padding
C. chaplets and padding
D. chills, chaplets and padding
Answer: Option B
Explanation:
View Answer Discuss
40.
A sand employed on the faces of the pattern before moulding, is called
A. green sand
B. dry sand
C. loam sand
D. parting sand
Answer: Option D
Explanation:
No answer description available for this
[25/01, 7:32 PM] +91 90977 55891: 41.

A. The angular clearance on dies varies from 0.5° to 1°.
B. In drawing operation, the metal flows due to plasticity.
C. In press operation, the size of the pierced hole is independent of the size of punch.
Answer: Option D
Explanation:
View Answer Discuss
42.
When two metal pieces of different thicknesses are to be welded by projection welding, then the
projections should be made on __________ metal piece.
A. thinner
B. thicker
Answer: Option B
Explanation:
View Answer Discuss
43.
In fore-hand welding, the angle between the welding rod and the work is kept as
A. 30°-40°
B. 40°-50°
C. 50°-60°
D. 60°-70°
Answer: Option A
Explanation:
View Answer Discuss
44.
The minimum size of a bloom is
A. 5 cm x 5 cm
B. 10 cm x 10 cm
C. 15 cm x 15 cm
D. 20 cm x 20 cm
Answer: Option C
Explanation:
View Answer Discuss
45.
The binder commonly used in making oil sand, is
A. clay-type binder
B. organic-type binder
C. inorganic-type binder
D. any one of these
Answer: Option B
Explanation:
View Answer Discuss

[25/01, 7:33 PM] +91 90977 55891: 46.
The material which can be best cut with oxygen cutting process is
A. mild steel
B. brass
C. copper
D. aluminium
Answer: Option A
Explanation:
View Answer Discuss
47.
In fore-hand welding, the weld is made
A. from left to right
B. from right to left
C. first from left to right and then from right to left
D. either from left to right or from right to left
Answer: Option B
Explanation:
View Answer Discuss
48.
In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal
to
A. d
B. 1.5 d
C. 3d
D. 6d
Answer: Option B
Explanation:
View Answer Discuss
49.
Thermit, used in thermit welding, is a mixture of
A. charcoal and iron oxide
B. charcoal and aluminium
C. iron oxide and aluminium
D. charcoal, iron oxide and aluminium
Answer: Option C
Explanation:
View Answer Discuss
50.
The width of slot cut by a hacksaw blade is __________ the width of the blade.
A. equal to
B. less than
C. greater than
Answer: Option C
Explanation:
No answer description available for this question. L
[25/01, 7:34 PM] +91 90977 55891: 1.
A basic shaft is one whose
A. lower deviation is zero
B. upper deviation is zero
C. lower and upper deviations are zero
D. none of these
Answer: Option B
Explanation:
View Answer Discuss
2.
A file with 20 teeth in 25 mm is called
A. rough file
B. bastard file
C. second cut file
D. smooth file
Answer: Option A
Explanation:
View Answer Discuss
3.
The flux commonly used in brazing is
A. zinc chloride
B. ammonium chloride
C. rosin plus alcohol
D. borax
Answer: Option D
Explanation:
View Answer Discuss
4.
The increase in hardness due to cold working, is called
A. age-hardening
B. work-hardening
C. induction hardening
D. flame hardening
Answer: Option B
Explanation:
View Answer Discuss
5.
When a pattern is made in three parts, the top part, is known as a
A. drag
B. cheek
C. cope
D. none of these
Answer: Option C
Explanation:
[25/01, 7:35 PM] +91 90977 55891: 6.
In a __________ , the molten metal is poured and allowed to solidify while the mould is revolving.
A. die casting method
B. slush casting method
C. permanent mould casting method
D. centrifugal casting method
Answer: Option D
Explanation:
View Answer Discuss
7.
Riddle is used for
A. smoothing and cleaning out depressions in the mould
B. cleaning the moulding sand
C. moistening the sand around the edge before removing pattern
D. reinforcement of sand in the top part of moulding box
Answer: Option B
Explanation:
View Answer Discuss
8.
A hacksaw blade cuts on the
A. forward stroke
B. return stroke
C. both forward and return strokes

D. cutting depends upon the direction of force
Answer: Option A
Explanation:
View Answer Discuss
9.
The oxygen cylinder is usually painted with
A. black colour
B. white colour
C. maroon colour
D. yellow colour
Answer: Option A
Explanation:
View Answer Discuss
10.
Which of the following welding method uses a pool of molten metal?
A. Carbon arc welding
B. Submerged arc welding
C. TIG arc welding
D. MIG arc welding
Answer: Option B
Explanation:
No answer description available
[25/01, 7:35 PM] +91 90977 55891: 11.
In fore-hand welding, the angle between the welding torch and the work is __________ as compared to
back-hand welding.
A. same
B. less
C. more
Answer: Option B
Explanation:
View Answer Discuss
12.
The advantage of thermit welding is that
A. all parts of the weld section are molten at the same time
B. weld cools almost uniformly
C. results in a minimum problem with internal residual stresses
D. all of the above
Answer: Option D
Explanation:
View Answer Discuss
13.
A gimlet is a __________ tool.
A. boring
B. marking
Answer: Option A
Explanation:
View Answer Discuss
14.
Slick is used for repairing and finishing the mould.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
15.
The maximum flame temperature occurs
A. at the outer cone
B. at the inner cone
C. between the outer and inner cone
D. at the torch tip
Answer: Option B
Explanation:
[25/01, 7:36 PM] +91 90977 55891: 16.
During cold working process

A. grain structure is distorted
B. strength and hardness of metal increases
C. close dimensional tolerance can be maintained
D. all of the above
Answer: Option D
Explanation:
View Answer Discuss
17.
When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be
cleaned by
A. washing it with water
B. rubbing on wood
C. washing it with dilute acid
D. using file card
Answer: Option D
Explanation:
View Answer Discuss
18.
In back-hand welding, the angle between the welding rod and the work is __________ as compared to
fore-hand welding.
A. same
B. less
C. more
Answer: Option A
Explanation:
View Answer Discuss
19.
Lap joints are employed on plates having thickness
A. less than 3 mm
B. 5 to 10 mm
C. 12.5 mm
D. above 25 mm
Answer: Option A
Explanation:
View Answer Discuss
20.
A large electrode is used in un-shielded arc welding.
A. Correct
B. Incorrect
Answer: Option A
[25/01, 7:36 PM] +91 90977 55891: 21.
A process used for making thin phosphate coating on steel is called parkerising.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
22.
The recrystallisation temperature of steel is
A. 400° C
B. 600° C
C. 800° C
D. none of these
Answer: Option C
Explanation:
View Answer Discuss
23.
A basic hole is one whose
A. lower deviation is zero
B. upper deviation is zero
C. lower and upper deviations are zero
D. none of these
Answer: Option A
Explanation:
View Answer Discuss
24.
Seam welding is best adopted for metal thickness ranging from
A. 0.025 to 3 mm
B. 3 to 5 mm
C. 5 to 8 mm
D. 8 to 10 mm
Answer: Option A
Explanation:
View Answer Discuss
25.
A file with 50 - 60 teeth in 25 mm is called bastard file.
A. True
B. False
Answer: Option B
[25/01, 7:37 PM] +91 90977 55891: 26.
The surface to be machined is marked on the pattern by
A. red colour
B. yellow colour
C. black colour
D. blue colour
Answer: Option A
Explanation:
View Answer Discuss
27.
In electric resistance welding, pressure applied varies from
A. 1 to 5 MPa
B. 5 to 10 MPa
C. 10 to 25 MPa
D. 25 to 55 MPa
Answer: Option D
Explanation:
View Answer Discuss
28.
In order to deliver molten metal from pouring basin to gate, a __________ is used.
A. riser
B. sprue
C. core
Answer: Option B
Explanation:
View Answer Discuss
29.
V-block is used to
A. check the trueness of flat surfaces
B. locate centres of round rods
C. check the surface roughness
D. none of these
Answer: Option D
Explanation:
View Answer Discuss
30.
A progressive limit gauge has
A. 'Go' and 'Not go' member on the same side of the gauge
B. separate 'Go' and 'Not go' members
C. 'Go' member at one end and 'Not go' member at the other end
Answer: Option A
[25/01, 7:38 PM] +91 90977 55891: 32.
Shift is a casting defect which
A. results in a mismatching of the top and bottom parts of a casting
B. results in general enlargement of a casting
C. occurs near the ingates as rough lumps on the surface of a casting
D. occurs as sand patches on the upper surface of a casting
Answer: Option A
Explanation:
View Answer Discuss
33.
During drawing operation, the states of stress in cup would include
A. compressive stress in the flange
B. tensile stress in the wall
C. both (a) and (b)

D. none of these
Answer: Option C
Explanation:
View Answer Discuss
34.
A diamond pointed chisel is used for cutting
A. flat surfaces
B. grooves
C. keyways
D. V-shaped grooves
Answer: Option D
Explanation:
View Answer Discuss
35.
The length of hacksaw blade is the distance between the outside edges of the holes which fits over the
pins.
A. Agree
B. Disagree
Answer: Option A
Explanation:

[25/01, 7:38 PM] +91 90977 55891: 36.
The parts of circular cross-section which are symmetrical about the axis of rotation are made by
A. hot forging
B. hot spinning
C. hot extrusion
D. hot drawing
Answer: Option B
Explanation:
View Answer Discuss
37.
In permanent mould casting method
A. molten metal is poured in a metallic mould, retained in the mould long enough for the outer
skin to solidify and finally mould is turned over to remove molten metal still in molten condition
B. molten metal is poured and allowed to solidify while the mould is revolving
C. molten metal is forced into mould under high pressure
Answer: Option D
Explanation:
View Answer Discuss
38.
In electric resistance welding, pressure is applied just after the completion of current.
A. True
B. False
Answer: Option A
Explanation:
View Answer Discuss
39.
Scribing block is used to
A. hold the round bars during marking
B. check the trueness of flat surfaces
C. locate the centres of round bars
D. check the surface roughness
Answer: Option C
Explanation:
View Answer Discuss
40.
Neutral flame is usd to weld
A. steel
B. cast iron
C. copper
D. all of these
Answer: Option D
[25/01, 7:39 PM] +91 90977 55891: 41.
Acetylene gas is stored in cylinders in
A. solid form
B. gaseous form
C. liquid form
D. any one of these
Answer: Option C
Explanation:
View Answer Discuss
42.
Which one of the following material will require the largest size of riser for the same size of casting?
A. Aluminium
B. Cast iron
C. Steel
D. Copper
Answer: Option C
Explanation:
View Answer Discuss
43.
The consumable electrode is used in
A. carbon arc welding
B. submerged arc welding
C. TIG arc welding
D. MIG arc welding
Answer: Option D
Explanation:
View Answer Discuss
44.
The operation of cutting a sheet of metal in a straight line along the length, is known as
A. plunging
B. notching
C. slitting
D. forming
Answer: Option C
Explanation:
View Answer Discuss
45.
Forming is the operation of removing metal to the desired shape from the edge of a plate.
A. Correct
B. Incorrect
Answer: Option B
Explanation:
No answer description available for
[25/01, 7:40 PM] +91 90977 55891: 46.
Cold working of metal increases
A. tensile strength
B. yield strength
C. hardness
D. all of these
Answer: Option D
Explanation:
View Answer Discuss
47.
In welding aluminium with TIG arc welding, alternating current is used.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
48.
Linde welding uses
A. neutral flame and right-ward technique
B. oxidising flame and left-ward technique
C. neutral flame and left-ward technique
D. carburising flame and right-ward technique
Answer: Option D
Explanation:
View Answer Discuss

49.
The purpose of a gate is to
A. deliver molten metal into the mould cavity
B. act as a reservoir for the molten metal
C. feed the molten metal to the casting in order to compensate for the shrinkage
D. deliver molten metal from pouring basin to gate
Answer: Option A
Explanation:
View Answer Discuss
50.
When two pieces of different metals are to be welded by projection welding, then the projection should
be made on the metal piece having __________ conductivity.
A. lower
B. higher
Answer: Option B
Explanation:
No answer description available for this
[25/01, 7:42 PM] +91 90977 55891: 1.
The vertical welding do not require plate edge preparation upto 16 mm thickness.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
2.
The dowels are
A. wooden nails
B. box nails
C. wire nails
D. none of these
Answer: Option A
Explanation:
View Answer Discuss
3.
In arc welding, the temperature of heat produced by the electric arc is of the order of
A. 3000° C to 4000° C
B. 4000° C to 5000° C
C. 5000° C to 6000° C
D. 6000° C to 7000° C
Answer: Option D
Explanation:
View Answer Discuss
4.
Extrusion
A. is extensively used for making bolts and nuts
B. is used for reducing the diameter of round bars and tubes by rotating dies which open and close
rapidly on the work
C. is used to improve fatigue resistance of the metal by setting up compressive stresses in its
surface
D. consists of pressing the metal inside a chamber to force it out by high pressure through an
orifice which is shaped to provide the desired form of the finished part
Answer: Option D
Explanation:
View Answer Discuss
5.
The operation of cutting of a flat sheet to the desired shape is called
A. shearing
B. piercing
C. punching
D. blanking
Answer: Option A
[25/01, 7:42 PM] +91 90977 55891: 6.
The process of decreasing the cross-section of a bar and increasing its length, is called
A. drawing down
B. upsetting
C. spinning
D. peening
Answer: Option A
Explanation:
View Answer Discuss
7.
A casting defect which occurs due to improper venting of sand is known as
A. cold shuts
B. blow holes
C. shift
D. swell
Answer: Option B
Explanation:
View Answer Discuss
8.
Swab is used for
A. smoothing and cleaning out depressions in the mould
B. cleaning the moulding sand
C. moistening the sand around the edge before removing pattern
D. reinforcement of sand in the top part of the moulding box
Answer: Option C
Explanation:
View Answer Discuss
9.
The temperature of the inner luminous cone of neutral flame is about
A. 1000° C
B. 1250° C
C. 2100° C
D. 3200° C
Answer: Option D
Explanation:
View Answer Discuss
10.
The metal patterns as compared to wooden patterns require less
A. shrinkage allowance
B. machining allowance
C. draft allowance
D. distortion allowance
Answer: Option C
[25/01, 7:43 PM] +91 90977 55891: 11.
When the dimension is expressed as , then the basic size is
A. 20 mm
B. 20.035 mm
C. 20.025 mm
D. 19.975 mm
Answer: Option A
Explanation:
View Answer Discuss
12.
In order to produce uniform packing of sand in the moulds, a __________ is used.
A. sand slinger
B. squeezing machine
C. jolt machine
D. stripper plate machine
Answer: Option A
Explanation:
View Answer Discuss
13.
The difference between the upper limit and lower limt of a dimension is called
A. nominal size
B. basic size
C. actual size
D. tolerance
Answer: Option D
Explanation:
View Answer Discuss
14.
Green sand is a mixture of
A. 30% sand and 70% clay
B. 50% sand and 50% clay
C. 70% sand and 30% clay
D. 90% sand and 10% clay

Answer: Option C
Explanation:
View Answer Discuss
15.
The diaphragm moulding machine is used to
A. ram the sand harder at the pattern face with decreasing hardness towards the back of the
mould
B. ram the sand harder at the back of the mould and softer on the pattern face
C. produce uniform packing of sand in the mould
D. give uniform sand hardness throughout the mould
Answer: Option D
[25/01, 7:45 PM] +91 90977 55891: 16.
A pattern is used to make the mould cavity for pouring the molten metal for casting.
A. Yes
B. No
Answer: Option A
Explanation:
View Answer Discuss
17.
The surface to be left unmachined is marked on the pattern by
A. red colour
B. yellow colour
C. black colour
D. blue colour
Answer: Option C
Explanation:
View Answer Discuss
18.
The two rolls in a two high rolling mills are of __________ size.
A. equal
B. different
Answer: Option A
Explanation:
View Answer Discuss
19.
The welding process used in joining mild steel shanks to high speed drills, is
A. spot welding
B. seam welding
C. flash butt welding
D. upset butt welding
Answer: Option C
Explanation:
View Answer Discuss

20.
The mode of deformation of the metal during spinning is
A. bending
B. stretching
C. rolling and stretching
D. bending and stretching
Answer: Option D
Explanation:
[25/01, 7:54 PM] +91 90977 55891: 21.
The process used to improve fatigue resistance of the metal by setting up compressive stresses in its
surface, is known as
A. hot piercing
B. extrusion
C. cold peening
D. cold heading
Answer: Option C
Explanation:
View Answer Discuss
22.
Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
23.
The process of increasing the cross-section of a bar at the expense of its length, is called
A. drawing down
B. upsetting
C. spinning
D. peening
Answer: Option B
Explanation:
View Answer Discuss
24.
In TIG arc welding, the welding zone is shielded by an atmosphere of
A. helium gas
B. argon gas
C. either (a) or (b)
D. none of these
Answer: Option C
Explanation:
View Answer Discuss
25.
The metal extrusion process is generally used for producing

A. uniform solid sections
B. uniform hollow sections
C. uniform solid and hollow sections
D. varying solid and hollow sections
Answer: Option C
Explanation:
View Answer Discuss
[25/01, 7:55 PM] +91 90977 55891: 26.
The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as
embossing.
A. Correct
B. Incorrect
Answer: Option A
Explanation:
View Answer Discuss
27.
In a gas welding of mild steel using an oxy-acetylene flame, the total amount of acetylene consumed is
10 litre. The oxygen consumption from the cylinder is
A. 5 litre
B. 10 litre
C. 15 litre
D. 20 litre
Answer: Option B
Explanation:
View Answer Discuss
28.
The sand used for making cores is
A. green sand
B. dry sand
C. loam sand
D. oil sand
Answer: Option D
Explanation:
View Answer Discuss
29.
Sand wash is a casting defect which
A. results in a mismatching of the top and bottom parts of a casting
B. results in general enlargement of the casting
C. occurs near the ingates as rough lumps on the surface of a casting
D. occurs as sand patches on the upper surface of a casting
Answer: Option C
Explanation:
View Answer Discuss

30.
Cold working distorts grain structure and does not provide an appreciable reduction in size.
A. Correct
B. Incorrect
Answer: Option A
[25/01, 7:55 PM] +91 90977 55891: 31.
Cast iron and steel pipes are produced by
A. slush casting
B. investment casting
C. true centrifugal casting
D. die casting
Answer: Option C
Explanation:
View Answer Discuss
32.
The acetylene cylinder is usually painted with
A. black colour
B. white colour
C. maroon colour
D. yellow colour
Answer: Option C
Explanation:
View Answer Discuss

33.
In order to ram the sand harder at the back of the mould and softer on the pattern face, a __________ is
used.
A. sand slinger
B. squeezing machine
C. jolt machine
D. stripper plate machine
Answer: Option B
Explanation:
View Answer Discuss
34.
The property of sand due to which the sand grains stick together, is called
A. collapsibility
B. permeability
C. cohesiveness
D. adhesiveness
Answer: Option C
Explanation:
View Answer Discuss
35.
The temperature produced by oxy-hydrogen flame is about
A. 1800° C
B. 2100° C
C. 2400° C
D. 3200° C
Answer: Option C
[25/01, 7:56 PM] +91 90977 55891: 36.
The oxidising flame is similar to neutral flame but the inner cone is less luminous and shorter.
A. Yes
B. No
Answer: Option A
Explanation:
View Answer Discuss
37.
A hacksaw blade is specified by its
A. length
B. material
C. width
D. number of teeth
Answer: Option A
Explanation:
View Answer Discuss
38.
According to Indian standard specifications, 100 H6/g 5 means that.
A. basic size is 100 mm
B. actual size is 100 mm

C. difference between the actual size and basic size is 100 mm
Answer: Option A
Explanation:
View Answer Discuss
39.
A. The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting
alloys.
B. The cold chamber die casting machine is used for casting aluminium, magnesium, copper base
alloys and other high melting alloys.
C. The castings produced by centrifugal casting method have open and coarse grained structure.
D. all of the above
Answer: Option C
Explanation:
View Answer Discuss
40.
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
A. less than 0.1 percent
B. less than 0.3 percent
C. more than 0.3 percent
D. any where between 0.1 to 1 percent
Answer: Option C
[25/01, 7:57 PM] +91 90977 55891: 41.
In blanking operation, the clearance is provided on
A. punch
B. die
C. half on the punch and half on the die
D. either on punch or die depending upon designer's choice
Answer: Option A
Explanation:
View Answer Discuss
42.
In piercing operation, the clearance is provided on
A. punch
B. die
C. half on the punch and half on the die
D. either on punch or die depending upon designer's choice
Answer: Option B
Explanation:
View Answer Discuss
43.
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then
the shrinkage allowance allowed on the wooden pattern should be
A. 10 mm/m
B. 16 mm/m
C. 20 mm/m
D. 26 mm/m
Answer: Option D
Explanation:
View Answer Discuss
44.
For arc welding
A. alternating current with high frequency is used
B. alternating current with low frequency is used
C. direct current is used
D. any one of these
Answer: Option C
Explanation:
View Answer Discuss
45.
When the file is moved to and fro over the work, it is known as
A. cross filing
B. draw filing
C. pull and push filing
D. none of these
Answer: Option B
Explanation:
[25/01, 7:57 PM] +91 90977 55891: 46.
The hot working of metals is carried out
A. at the recrystallisation temperature
B. below the recrystallisation temperature
C. above the recrystallisation temperature
D. at any temperature
Answer: Option C
Explanation:
View Answer Discuss
47.
In a four high rolling mill, the diameter of backing up rolls is __________ the diameter of working rolls.
A. equal to
B. smaller than
C. larger than
Answer: Option C
Explanation:
View Answer Discuss
48.
The welding process used to join the ends of two pipes of uniform cross-section, is
A. spot welding
B. seam welding
C. projection welding
D. upset butt welding

Answer: Option D
Explanation:
View Answer Discuss
49.
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is
known as
A. die casting method
B. slush casting method
C. permanent mould casting method
D. centrifugal casting method
Answer: Option C
Explanation:
View Answer Discuss
50.
Hot piercing is extensively used for making bolts and nuts.
A. Yes
B. No
Answer: Option B
[25/01, 7:59 PM] +91 90977 55891: 1.
When more volume of acetylene and less volume of oxygen is supplied, then a __________ flame is
obtained.
A. neutral
B. oxidising
C. carburising
Answer: Option C
Explanation:
View Answer Discuss
2.
The instrument used to measure external and internal diameter of shafts, thickness of parts and depth
of holes, is
A. outside micrometer
B. inside micrometer
C. depth gauge micrometer
D. vernier caliper
Answer: Option D
Explanation:
View Answer Discuss
3.
The punch and die set up is __________ for punching and piercing operation.
A. similar
B. different
Answer: Option A
Explanation:

View Answer Discuss
4.
For smoothing and cleaning out depressions in the mould, a __________ is used.
A. slick
B. lifter
C. swab
D. gagger
Answer: Option B
Explanation:
View Answer Discuss
5.
When the dimension is expressed as , then the tolerance is
A. 0.035 mm
B. 0.025 mm
C. 0.01 mm
D. 0.06 mm
Answer: Option D
[25/01, 8:00 PM] +91 90977 55891: 6.
The brass and bronze are welded by __________ flame.
A. neutral
B. oxidising
C. carburising
D. all of these
Answer: Option B
Explanation:
View Answer Discuss
7.
Projection welding is a
A. continuous spot welding process
B. multi-spot welding process
C. arc welding process
D. process used for joining round bars
Answer: Option B
Explanation:
View Answer Discuss
8.
The adhesiveness is the property of a sand due to which
A. it evolves a great amount of steam and other gases
B. the sand grains stick together
C. it cling to the sides of a moulding box
D. none of these
Answer: Option C
Explanation:
View Answer Discuss
9.
A stripper-plate machine is used to draw the pattern from the mould.

A. Yes
B. No
Answer: Option A
Explanation:
View Answer Discuss
10.
The algebraic difference between the maximum limit and the basic size is called
A. actual deviation
B. upper deviation
C. lower deviation
D. fundamental deviation
Answer: Option B
Explanation:
[25/01, 8:01 PM] +91 90977 55891: 11.
For gas welding, the pressure desired at the welding torch for oxygen is
A. 7 to 103 kN/m2
B. 70 to 280 kN/m2
C. 280 to 560 kN/m2
D. 560 to 840 kN/m2
Answer: Option B
Explanation:
View Answer Discuss
12.
Seam weiding is a
A. continuous spot welding process
B. multi-spot welding process
C. arc welding process
D. process used for joining round bars
Answer: Option A
Explanation:
View Answer Discuss
13.
In a simple die
A. two or more operations are performed simultaneously at the single stroke of the ram
B. two or more cutting operations are performed at one station of the press in every stroke of the
ram
C. both cutting and non-cutting operations are performed at one station of the press in every
stroke of the ram
Answer: Option d
View Answer Discuss
14.
The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of
metal, is known as
A. drawing
B. squeezing
C. coining
D. planishing
Answer: Option A
Explanation:
View Answer Discuss

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[16/01, 8:27 PM] +91 90977 55891: Basic Mechanical Engineering MCQ PDF Part 1 Harikesh Yadav ME

MCQ PDF, Uncategorized May 24, 2017

a. parallel to the axis of rotation of workpiece

b. perpendicular to the axis of rotation of workpiece

d. none of the above

ANSWER: perpendicular to the axis of rotation of workpiece

2) What is the function of cone pulley drive in lathe machines?

a. Drive the lead screw

b. Change the spindle speed

c. Drive the tail-stock

d. All of the above

ANSWER: Change the spindle speed

4) The function of taper turning process is to ____

a. reduce the diameter of a workpiece along its length

c. remove the material from end surface of a workpiece

d. all of the above

ANSWER: reduce the diameter of a workpiece along its length

5) The process of bevelling sharp ends of a workpiece is called as _______

c. both energy and mass

d. neither energy nor mass

ANSWER: neither energy nor mass

7) Which of the following is an extensive property?

d. All of the above

8) How is absolute pressure measured?

a. Gauge pressure + Atmospheric pressure

b. Gauge pressure – Atmospheric pressure

c. Gauge pressure / Atmospheric pressure

d. None of the above

ANSWER: Gauge pressure + Atmospheric pressure

9) The extensive properties of a system, _______

a. are independent of the mass of the system

b. depend upon temperature of the system

c. depend upon the mass of the system

d. none of the above

10) An isobaric process, has constant _____

d. All of the above

12) Lancashire boilers are ______

a. externally fired boilers

b. internally fired boilers

d. none of the above

ANSWER: internally fired boilers

a. have high evaporation rates

c. temperature stresses inducing failure of feed water arrangement are maximum

d. all of the above

ANSWER: are slow in operations

1. Flow of water can be regulated without any losses

2. It works on the principle of impulse and reaction

3. They are suitable for low heads

4. Water flows at constant atmospheric pressure over the runner

15) In four stroke cycle engine, cycle is completed in ______

a. two strokes of the piston

b. two revolutions of the crankshaft

c. three strokes of the piston

d. four revolutions of the crankshaft

ANSWER: two revolutions of the crankshaft

16) Which type of bearings are known as anti friction bearings?

a. Sliding contact bearings

d. None of the above