1. The hardest known material is
a)
Ceramic
b)
High speed steel
c)
Cemented carbide
d)
Diamond
2. Which of the following welding process
uses consumable electrodes
a)
TIG
b)
MIG
c)
Thermit
d)
Laser
3. Wire is made by
a)
Drawing
b)
Forging
c) Rolling
d)
Casting
4. A
1000 tonne press implies that
a)
The weight of press is 1000 tonne
b)
The press can handle works weighing up to 1000 tonne
c)
It can exert pressure up to 1000 tonne
d)
Its turn over in a day is 1000 tonne
5. Swaging is an operation of
a)
Extrusion
b)
Forging
c)
Casting
d)
Rolling
6. Which of the following is the most
ductile material
a)
Lead
b)
Copper
c)
Mild steel
d)
Vanadium
7. Casting defects caused by the molten
metal is
a)
Blow holes
b)
Swell
c)
Scab
d)
All of the above
8. Forming operation which does not involve
rotation of work piece is
a)
Spinning
b)
Thread rolling
c)
Ring rolling d) Upsetting
9. Seamless rings are made by the process
a)
Super-plastic forming
b)
Mandrel forging
c)
Ring rolling
d) Diffusion
bonding
10. Trimming process is associated with
a)
Polishing of metals
b)
Machining
c)
Electroplating
d)
Forging
11. Brinell hardness tester uses a hardened
steel ball of size
a) 1
mm
b) 5
mm
c)
10 mm
d)
15 mm
12. The crystal structure of alpha iron
a)
BCC
b)
FCC
c)
HCP
d)
Cubic
13. The phenomenon of weld decay occurs in
a)
Cast iron
b)
Brass
c)
Bronze
d)
Stainless steel
14. Turbine rotor is made by
a)
Rolling
b)
Sand casting
c)
Forging
d)
Extrusion
15. Greater forging capacity is achieved
with
a)
Mechanical press
b)
Power hammer
c)
Hydraulic press
d)
Non of them
16. Spring back phenomenon occurs in
a)
Forging
b)
Hot penning
c)
Spinning
d)
Bending
17. Pre heating is essential in welding of
a)
High speed steel
b)
German steel
c)
Stainless steel
d)
Cast iron
18. The transistor is made of
a)
Silver
b)
Germanium
c)
Copper
d)
Cast iron
19. Foundry crucible is made of
a)
Stainless steel
b)
Mild steel
c)
Lead
d)
Graphite
20. Age hardening is related with
a)
Stainless steel
b)
Duralumin
c)
Gun metal
d)
Cast iron
21. In hot working process
a)
Poor surface finish is produced
b)
Scale formed
c)
Close tolerance is difficult to maintain
d)
All of the above
22. Forming operation which does not
involve rotation of work piece is
a)
Spinning
b)
Thread rolling
c)
Ring rolling
d)
Upsetting
23. Casting defects caused by the molten
metal is
a)
Blow holes
b)
Swell
c)
Scab
d)
All of the above
24. Severe quenching can cause
a)
Blow holes
b)
Warping
c) Inclusions
d)
Non of them
25. Sprue in casting refers to
a)
Gate
b)
Runner
c)
Riser
d)
Vertical passage
26. Fettling is an operation performed
a)
Before casting
b)
After casting
c)
During casting
d)
After heat treatment
27. Slag inclusion in the casting is a
a)
Surface defects
b)
Internal defect
c)
Crack
d)
Notch
28. Draft on pattern means
b)
Allowance for machining
c)
Locating pad
d)
Compensate for stripping
e)
Compensation for shrinkage
29. The tool life is influenced maximum by
a) Cutting
speed
b)
Tool material and geometry
c)
Cutting fluid
d)
Surface conditions of the workpiece
e)
Skill of the operator
30. Tool life may be measured by the
a)
Total time the tool has been in contact with the job
b)
Quantity of material removed between the total sharpening
c)
Number of work pieces machined between tool sharpening
d)
Time for the flank wear to reach a certain dimension
e)
Any one of the above
31. Choose the coolant that would be most
appropriate for light cuts on aluminum alloys
a)
Kerosene
b)
Mineral oil
c)
Soluble oil or emulsions
d)
Straight fatty oil
32. Which is not the primary function of
coolant in a metal cutting operation
a)
To cool the tool and work piece and conduct the heat generated
b)
To improve the cutting action
c)
To help in giving bright shining surface to the job
d)
To reduce the friction at the cutting point
33. The cutting speed of a tool refers to
a)
Revolution made by the tool in a specified time
b)
Revolutions turned by the job in a specified time
c)
Distance travelled by the tool in one revolution of the job
d)
Rate at which cutting edge of the tool passes over the surface of work piece
34. Tool signature
a)
Is a pictorial view of the tool
b)
Outlines the orthographic projection of the tool
c)
Represents complete specification of the tool
d)
Is a numerical method of tool identification
e)
Indicate life of tool
35. With an increase in nose radius of
single point cutting tools
a)
Tool life increases
b)
Excessive heat is generated
c) Surface
finish deteriorates
d)
Cutting speeds have to be kept small
36. Single point thread cutting tool should
ideally have
a)
Zero rack angle
b)
Positive rack
c)
Negative rack
d)
Normal rack
37. Cutting tool may be provided with large
positive rack angle to
a)
Have a better heat dissipation
b)
Avoid rubbing with the finished surface
c)
Increase the strength of cutting edge
d)
Reduce the magnitude of cutting forces
38. The angle between the face and the
flank of the single point cutting tool is known as
a)
Rack angle
b)
Clearance angle
c)
Lip angle
d)
Point angle
39. In metal cutting operation, the cutting
angle is defined as the angle
a)
between the flank and the horizontal machined surface
b)
between the shear plane and the direction of tool travel
c)
between the face of tool and the line tangent to the machined surface at the
cutting point
d)
between the tool face and the ground end surface of flank
40. The angle between the tool face and the
plane parallel to the base of the cutting tool is called
a)
Lip angle
b)
Cutting angle
c)
Rack angle
d)
Shear angle
41. Identify the single point cutting tool
a)
Milling cutter
b)
Hacksaw blade
c)
Grinding wheel
d)
Cutting tool used in a slotting machine
42. Crater wear is predominant in
a)
Carbon tool steels
b)
Tungsten carbide tools
c)
High speed steel tools
d)
Ceramic tools
43. The crater wear of a cutting tool is
due to
a)
Chemical action of the coolant
b)
Excessive heat generated during cutting operation
c)
Rubbing of tool against the work piece
d)
Abrasive action of the chip
44. Which part of the cutting tool is prone
to crater wear
a)
Flank
b)
Face
c)
Shank
d)
Base
45. Metric thread have included angle:
a)
60°
b)
55°
c)
30°
d)
None
46. During manufacturing of spring, the
coiling pitch is assumed to be larger than specified pitch by
a)
5-8%
b)
10-12%
c)
2-5%
d)
none
47. Stretching of rolled rings is done to
a)
To meet dimensional requirement
b)
To relieve stresses
c)
To introduce stresses
d)
To improve finish
48. Liquid nitrogen containers can be made
from
a)
Ferritic stainless steel
b)
HSLA steel
c)
Titanium
d)
Austenitic stainless steel
49. Shell moulding process requires
a)
Wooden pattern
b)
Plastic pattern
c)
Sand pattern
d)
Metal pattern
50. The material of pattern in the
investment casting is
a)
Resin
b)
Sand
c)
Wax
d)
Wood
51. Polymerization is associated with
a)
Stainless steel
b)
Cast iron
c)
Thermoplastic
d)
Duralumin
52. Which of the following is a
non-destructive test
a)
Impact test
b)
Charpy test
c)
Cupping test
d)
Radiography test
53. The main purpose of heat treatment of
steels is to change the
a)
Chemical composition
b)
Mechanical properties
c)
Surface finish
d)
Physical properties
54. Normalizing operation is carried out in
a)
Water
b)
Oil
c)
Air
d)
Furnace
55. What size of material required for
making rolled threads?
(a)
Pitch diameter
(b)
Root diameter
(c)
Major diameter
(d)
None
56. Mohr’s circle can be used to determine
following stress on inclined surface
(a)
Principal stresses
(b) Normal
(c)
Maximum shear stresses
(d)
All of the above
57. What is Hertzian stress?
(a)
Tensile stress on inner surface of cylinder
(b)
Bending stress on two contact surface
(c)
Contact stress on two contact surfaces
(d)
Shear stress on two contact surfaces
58. Antifriction bearings are
(a)
Thick lubricated bearing
(b)
Thin lubricated bearing
(c)
Ball & roller bearing
(d)
Plastic bearing
59. When two elastic bodies collide with
each other
(a)
Two bodies will momentarily come to rest after collision
(b)
The two bodies tend to compress & deform at the surface of contact
(c)
Two bodies begins to retain their original shape
(d)
All of the above
60. Teflon is used for bearings because of
(a)
Low co-efficient of friction
(b)
Better heat dissipation
(c)
Smaller space constraint
(d)
All of the above
61. Backlash is
(a)
Sum of the clearance of two gears
(b)
Mutual play between two gears
(c)
Amount by which the width of a tooth space exceeds the thickness of the
engaging tooth on pitch circle
(d)
Any of the above
62. Principle effect of humidity is
(a)
Corrosion
(b)
Leaking from sealed enclosures
(c)
Permanent set of packing and gaskets
(d)
Differential contraction of metal parts
63. Stress concentration factor is defined
as ratio of
(a)
Max stress to endurance limit
(b)
Nominal stress to endurance limit
(c)
Max stress to nominal stress
(d)
Nominal stress to max stress
64. A bolt of uniform strength can be
developed by
(a)
Keeping the core dia of threads equal to the dia of unthreaded ortion of bolt
(b)
Keeping the core dia of threads smaller than the dia of unthreaded portion of
bolt
(c)
Keeping the nominal dia of threads equal to the dia of unthreaded portion of
bolt
(d)
None of the above
65. A closed cycle gas turbine works on
(a)
Carnot cycle
(b)
Rankine cycle
(c)
Joule cycle
(d)
Atkinson cycle
66. Thermal efficiency of a gas turbine
plant as compared to diesel engine plant
(a)
Higher
(b)
Lower
(c)
Same
(d)
May be higher or lower
67. Centre of pressure of an aerofoil with
an increase of angle of attack will
(a)
Move forward
(b)
Move backward
(c)
Not move
(d)
None of the above
68. Short columns are preferred over long
columns from
(a)
Strength consideration
(b)
Buckling consideration
(c)
Weight consideration
(d)
None of the above
69. Mass balancing is done to
(a)
Avoid flutter
(b)
Increase bending stress
(c)
Reduce drag
(d)
Distributing mass on control surface
70. Slow plastic deformation of material
under constant stress is
(a)
Creep
(b)
Fatigue
(c)
Endurance
(d)
Elastic deformation
71. Pitot tube is used for measurement of
(a)
Pressure
(b)
Temperature
(c)
Discharge
(d)
Velocity
72. In a refrigeration cycle, the moisture
content is to be removed before it enters into which system
A.
Cold side of system
B.
Evaporator
C.
compressor
D.
condenser
73. In one ton refrigeration machine, the
term “one ton” implies
A.
One ton refrigerant is used
B.
One ton water can be converted into ice
C.
One ton ice when melts from and at 0oC in 24 hours, the refrigerating effects
is equivalent to 3000 kcal/hour
D.
None of the above
74. Capillary action of liquid is due to
the
A.
Viscosity of liquid
B.
Cohesion of liquid particles
C.
Surface tension
D.
Adhesion of liquid particles on the surface
75. Cavitation in a pipe will begin when
A.
Pressure at any location reaches pressure equal to the saturated vapour
pressure of liquid
B.
Pressure becomes more than critical pressure
C.
Flow is increased
D.
Pressure is increased
76. During idling process, a petrol engine
requires
A.
Lean mixture
B.
Rich mixture
C.
Variable mixture
D.
None of above
77. A two-stroke engine is generally
preferred to a four-stroke engine because
A.
It offers low fuel consumption
B.
It gives lesser shocks and vibrations
C.
It can be easily started
D.
It has smaller size for the same output.
78. In internal combustion engine piston
the maximum temperature occurs at
A.
Ring section
B.
Gungeon pin
C.
Bottom centre
D.
Top centre
79. Power available at the shaft of an I.C
engine is known is
A.
Brake horse power
B.
Indicated horse power
C.
Net indicated horse power
D.
Pumping power
80. In internal combustion (I.C.) engines,
combustion of fuel takes place in
A.
Outside the cylinder
B.
Inside the cylinder
C.
Not in the cylinder
D.
None of the above
81. In an I –section beam, the bending
moment is resisted mainly by
A.
Flanges only
B.
Web only
C.
Both by flanges and web
D.
None of the above
82. In a rectangular beam, when width,
depth and length are doubled, the bending stress will be
A.
Shall remain unchanged
B.
Shall be doubled
C.
Shall become ¼ th
D.
Shall be halved
83. In a cantilever beam, maximum
deflection occurs at where
A.
Bending moment is zero
B.
Bending moment is maximum
C.
Shear force is zero
D.
Slope is zero
84. A hollow shaft of same cross-section
area as solid shaft transmits
A.
Same torque
B.
Less torque
C.
More torque
D.
Unpredictable
85. With rise in temperature , the specific
heat of water
a)
increases
b)
decreases
c)
first decreases to minimum and then increases
d)
remains constant
86. A system comprising of a single phase ,
is known as
a)
Open system
b)
Closed system
c)
Homogenous system
d)
Heterogeneous system
87. In laminar flow , maximum velocity at
the centre of the pipe is how many times to the average velocity?
a) 2
b) 3
c) 4
d)
None of these
88. The flow of water in the pipe of
diameter 3000 mm can be measured by
a)
Venturimeter
b)
Rotameter
c)
Pilot tube
d)
Orifice plate
89. The starting torque of slip ring
induction motor is increased by
a)
Adding external resistance to the rotor
b)
Adding external induction to the rotor
c)
Increasing the voltage fed to the motor
d)
Adding external capacitance to the rotor
90. The function of commutator in a DC
machine is
a)
To improve commutation
b)
To improve efficiency of motor
c)
To change alternative voltage to direct
d)
To change direct voltage to alternative voltage
91. If A.C. is fed by mistake to a DC motor
then DC motor will
a)
Burn as the eddy current in the field produce heat
b)
Run at its normal speed
c)
Run at a lower speed
d)
Run continuously but the sparking takes place at the brushes
92. A floating battery is one
a)
Which is getting charged
b)
In which feeding loads
c)
In which battery voltage is equal to charger voltage
d)
Which gets charged and discharged simultaneously
93. Which of the following parameter will
be more for 16 gauge copper wire in comparison to 14 gauge copper wire
a)
Cost
b)
Strength
c)
Resistance
d)
Weight
94. The induction of a coil can be
increased by
a)
Decreasing number of turns
b)
Increasing core length
c)
Using core material of highly relative permeability
d)
None of the above
95. Which of the following displays has
minimum power consumption
a)
light emitting diode (LED)
b)
liquid crystal display (LCD)
c)
nixie tube
d)
fluorescent
96. Transistor interjunction capacitance
causes the following in the amplifier
a)
noise
b)
harmonic distortion
c)
phase shift
d)
parasitic oscillation
97. Which of the following rays has the
lowest wavelength
a)
radio waves
b) x
rays
c)
infrared waves
d)
ultraviolet waves
98. The weight of one cubic meter of air
would be around
a)
13 gm
b)
130 gm
c)
1300 gm
d)
13000 gm
99. A real gas compared to idle gas at very
high pressure occupies
a)
Less volume
b)
More volume
d)
Same volume
c)
More/less depending on gas
a)
Same temperature
b)
Higher temperature
c)
Lower temperature
d)
Unpredictable
101. Which of the following has least
hardness
a)
Diamond
b)
Topaz
c)
Quartz
d)
Talc
102. A solution that can resist change in
its pH on addition of alkali/acid is called
a)
Buffer solution
b)
Neutral solution
c)
Ideal solution
d)
Zero pH solution
103. Brinell number of a metal or an alloy
is a measure of its
a)
tensile strength
b)
toughness
c)
malleability
d)
hardness
104. Which of the following materials has a
linear stress strain curve
a)
low carbon steel
b)
copper
c)
aluminium
d)
rubber
105. For a solid cone of height h, the CG
lies on the axis at the distance above the base equal to
a)
h/4
b)
h/3
c)
2h/3
d)
3h/8
106. A particle covers equal distance
around circular path in equal intervals of time. Which of the following
parameters connected with the motion of particle remains constant with time?
a)
displacement
b)
speed
c)
velocity
d)
acceleration
107. In simple harmonic motion ,
acceleration is proportional to
a)
displacement
b)
linear velocity
c)
angular velocity
d)
rate of change of angular velocity
108. A Body is dropped from rest at height
h. It covers a distance of 9/25 h in the last second. The height is about
a)
100 m
b)
115 m
c)
125 m
d)
150 m
109. A system of three forces acts on a
body and keeps it in equilibrium. The forces need to be
a)
Coplanar Only
b)
Concurrent Only
c)
Coplanar as well as Concurrent
d)
Coplanar but may be or may not be Concurrent
110. All of the following are scalar
quantities except
a)
Energy
b)
Temperature
c)
Time
d)
Displacement
