01. The ability of a material to undergo large permanent deformation with the application of a tensile force is called ductility.
(A) Correct
(B) Incorrect
02. The portion of a crankshaft which rests on cylinder block is called main journal.
(A) Yes
(B) No
03. The rotary compressors are suitable for large discharge of air at low pressure.
(A) True
(B) False
04. Ferrite and pearlite makes the steel soft and ductile.
(A) Agree
(B) Disagree
05. A baffle plate is fitted inside the oil pan to prevent the oil from splashing when it is subjected to vibration and other movement during vehicle operation.
(A) True
(B) False
06. An open cycle gas turbine works on the same cycle as that of a closed cycle gas turbine.
(A) Yes
(B) No
07. The quenching of steel from the upper critical point results in a fine grained structure.
(A) Agree
(B) Disagree
08. In a unit type body (frameless body) design, the sheet metal parts are welded together, forming a frame work to which outer skin is attached.
(A) True
(B) False
09. The increase in pressure in a vane blower takes place first due to compression and then due to back flow of air.
(A) Correct
(B) Incorrect
10. The steel produced by Bessemer or open hearth process is ________ to that produced by LD process.
(A) Superior
(B) Inferior
11. In a spark plug, when the temperature of the central electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off carbon starts is referred to as the self cleaning temperature.
(A) Correct
(B) Incorrect
12. The total heat rejected in a reciprocating air compressor is equal to the sum of the heat rejected during polytropic compression per kg of air and heat rejected in the intercooler per kg of air.
(A) True
(B) False
13. The dyeing down of a white flame during the operation of a Bessemer converter indicates that the air is burning out silicon and manganese.
(A) Yes
(B) No
14. The flywheel and the pressure plate bind the clutch disc between them so that the engine and the transmission can be engaged.
(A) Yes
(B) No
15. The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.
(A) Correct
(B) Incorrect
16. White cast iron has a high tensile strength and a low compressive strength.
(A) Yes
(B) No
17. Positive camber is used to compensate for wheels tilting inward due to the weight of the vehicle.
(A) Yes
(B) No
18. The actual volume of air delivered by a compressor, when reduced to the normal temperature and pressure conditions is called compressor capacity.
(A) Yes
(B) No
19. The advantage of double wishbone suspension design is that a large amount of freedom is available for setting geometry and precise settings can be made for driving comfort and steerability
(A) Correct
(B) Incorrect
20. Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in L.P. cylinder and H.P. cylinder.
(A) True
(B) False
21. The engine’s idling speed will increase by a slight degree immediately after a cold engine has been started. It will drop as the engine warms up and it will eventually reach the standard level.
(A) True
(B) False
22. The speed of rotary air compressor is ________ as compared to reciprocating air compressor.
(A) High
(B) Low
23. Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.
(A) Correct
(B) Incorrect
24. The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.
(A) Correct
(B) Incorrect
25. The compression ratio in Diesel engines is less than the petrol engine.
(A) Agree
(B) Disagree
26. The operation of the reciprocating air motor is similar to reciprocating air compressor.
(A) True
(B) False
27. Cast iron is a ductile material.
(A) Correct
(B) Incorrect
28. The oxidising flame is similar to neutral flame but the inner cone is less luminous and shorter.
(A) Yes
(B) No
29. Toe-in ensures parallel rolling of the wheel thus stabilizing steering in addition to preventing both sides slipping and excessive tyre wear.
(A) Correct
(B) Incorrect
30. In a two stage reciprocating compressor with intercooler, the amount of work saved with incomplete intercooling is ________ that in case of complete intercooling.
(A) Less than
(B) More than
31. The addition of copper to aluminium possesses maximum strength after heat treatment and age-hardening
(A) Correct
(B) Incorrect
32. Cold working distorts grain structure and does not provide an appreciable reduction in size.
(A) Correct
(B) Incorrect
33. In comparison to frame type construction, the frameless structure construction of automobiles is economical when produced in ________ numbers.
(A) Small
(B) Large
34. The free air delivery is the volume of air that can be delivered by a compressor freely.
(A) True
(B) False
35. In iron, the presence of carbon in free form is called graphite.
(A) Agree
(B) Disagree
36. Hot piercing is extensively used for making bolts and nuts.
(A) Yes
(B) No
37. When the vehicle is at rest, the clutch is in engaged position.
(A) Correct
(B) Incorrect
38. A regenerator in a gas turbine improves thermal efficiency.
(A) Correct
(B) Incorrect
39. In a body centred cubic space lattice, there are nine atoms out of which eight atoms are located at the corners of the cube and one atom at its centre.
(A) Yes
(B) No
40. A stripper plate machine is used to draw the pattern from the mould.
(A) Yes
(B) No
41. If the level of tension in the belt is too high, it can result in a loss of power or in bending of the rotating shaft or crankshaft.
(A) Correct
(B) Incorrect
42. Intercooling in compressors results in saving of power in compressing given volume of air to a given pressure.
(A) Correct
(B) Incorrect
43. A steel with carbon above 0.8% is known as hypereutectoid steel.
(A) Agree
(B) Disagree
44. Defrosting of a refrigerator may be done by stopping the compressor for a short period.
(A) Correct
(B) Incorrect
45. The overshot water wheels are those in which the wheel runs entirely by the ________ of water.
(A) Weight
(B) Impulse
46. The diesel engines are also known as _________ engines.
(A) Compression ignition
(B) Spark ignition
47. Line organisation is suitable for a big organisation.
(A) Correct
(B) Incorrect
48. Cemented carbide tool tips are produced by powder metallurgy.
(A) True
(B) False
49. A grate, in a boiler, is a place in the combustion chamber upon which fuel (wood or coal) is burnt.
(A) True
(B) False
50. Hydrogen is the __________ substance.
(A) Lightest
(B) Heaviest
51. All the commercial liquid fuels are derived from natural petroleum (or crude oil).
(A) True
(B) False
52. Surface plate is used to check the trueness of flat surfaces.
(A) True
(B) False
53. The heat transfer by conduction through a thick sphere is same as through a thick cylinder. (A) True (B) False 14. The temperature of air recorded by a thermometer, when the moisture present in it begins to condense, is called wet bulb temperature.
(A) Yes
(B) No
55. Ordinary water is sometimes used as moderator when enriched uranium is used as a fuel in nuclear power plants.
(A) Yes
(B) No
56. The boiling point of R-12 is about -30°C.
(A) True
(B) False
57. The detonation is also called knocking or pinking.
(A) Yes
(B) No
58. A round nose tool may be fed either from left to right end or from right to left end of the lathe bed.
(A) Yes
(B) No
59. A fine grained grinding wheel is used to grind hard materials.
(A) Correct
(B) Incorrect
60. An axial compressor gives optimum performance at high speeds and large volume flows.
(A) Agree
(B) Disagree
61. Maximum work is saved in a two stage reciprocating air compressor with incomplete intercooling.
(A) Agree
(B) Disagree
62. The bloom is smaller than a billet.
(A) True
(B) False
63. In the first law of thermodynamics, the total energy of the system remains constant.
(A) True
(B) False
64. Coal gas is obtained by mixing coal and gas at ambient conditions.
(A) Yes
(B) No
65. A steel containing 12 to 14% chromium and 0.12 to 0.35% carbon is called martenistic stainless steel.
(A) True
(B) False
66. In a compressor, work is done on the piston during suction of air and work is done by the piston during compression as well as delivery of air.
(A) Agree
(B) Disagree
67. The function of a carburettor is to control the amount and ratio of air-fuel mixture.
(A) True
(B) False
68. In big automobile repair shop, for elevating and moving the heavy parts such as complete engine assembly, gear box etc., an overhead crane and a fork lift truck is used.
(A) Yes
(B) No
69. In open combustion chamber in diesel engines, the shape and layout of the piston crown, the inlet port and the valve produce the turbulent effect of fuel mixture.
(A) True
(B) False
70. Representative time is the average of times recorded by work study man for an operation.
(A) Agree
(B) Disagree
71. Loeffler boiler is a water tube boiler using a forced circulation of water.
(A) True
(B) False
72. The ratio of the heat equivalent to one kW hour to the heat in fuel per B.P. hour is termed as brake thermal efficiency.
(A) Yes
(B) No
73. Lamont boiler is a high pressure water tube steam boiler working on forced circulation.
(A) Agree
(B) Disagree
74. A water cooled condenser operates at a _________ condensing temperature than an air-cooled condenser.
(A) Higher
(B) Lower
75. Work done by a turbine ________ upon the weight of water flowing per second.
(A) Depends
(B) Does not depend
76. In a centrifugal casting method, the impurities are collected in the centre of the casting.
(A) Yes
(B) No
77. The thermodynamic property of a system is said to be an intensive property whose value for the entire system __________ the sum of their value for the individual parts of the system.
(A) Is equal to
(B) Is not equal to
78. The relative humidity decreases as air gets wet.
(A) True
(B) False
79. The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Charles’ law.
(A) Yes
(B) No
80. In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.
(A) True
(B) False
81. In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.
(A) True
(B) False
82. In a four stroke cycle petrol engine, the charge is compressed when both the valves (i.e. inlet valve and exit valve) are closed,
(A) Agree
(B) Disagree
83. PERT is an event oriented technique.
(A) Correct
(B) Incorrect
84. The efficiency of a centrifugal pump will be maximum when the blades are bent backward.
(A) Yes
(B) No
85. The water, alcohol and ammonia have same refrigerating effect at different altitudes.
(A) Yes
(B) No
86. In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
(A) Yes
(B) No
87. According to Gay-Lussac law, the absolute pressure of a given mass of a perfect gas varies _________ as its absolute temperature, when the volume remains constant.
(A) Directly
(B) Indirectly
88. Light weight substances cannot be effective moderators.
(A) True
(B) False
89. The discharge of a centrifugal pump working under constant head ________ with the speed.
(A) Increases
(B) Decreases
90. The angle included between the two lips projected upon a plane parallel to the drill axis and parallel to the two cutting lips, is called helix angle.
(A) Correct
(B) Incorrect
91. The velocity of tool relative to the workpiece is known as cutting velocity.
(A) True
(B) False
92. In case of solids, the heat transfer takes place according to radiation.
(A) Correct
(B) Incorrect
93. In a centrifugal compressor, the air enters the impeller axially and leaves the vane radially.
(A) Yes
(B) No
94. A plug gauge is used to check the diameter of shafts and studs.
(A) Correct
(B) Incorrect
95. When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
(A) True
(B) False
96. When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.
(A) Agree
(B) Disagree
97. Sampling method of determining standard time is profitable for long cycle operation.
(A) Correct
(B) Incorrect
98. In oblique cutting system, the maximum chip thickness occurs at the middle.
(A) Correct
(B) Incorrect
99. The universal gas constant of a gas is the product of molecular mass of the gas and the gas constant.
(A) Correct
(B) Incorrect
100. In orthogonal cutting system, the maximum chip thickness occurs at the middle.
(A) Correct
(B) Incorrect
Answers:
01. Answer: A
02. Answer: A
03. Answer: A
04. Answer: A
05. Answer: A
06. Answer: A
07. Answer: A
08. Answer: A
09. Answer: A
10. Answer: B
11. Answer: A
12. Answer: A
13. Answer: B
14. Answer: A
15. Answer: A
16. Answer: B
17. Answer: A
18. Answer: B
19. Answer: A
20. Answer: A
21. Answer: A
22. Answer: A
23. Answer: A
24. Answer: A
25. Answer: B
26. Answer: B
27. Answer: B
28. Answer: A
29. Answer: A
30. Answer: A
31. Answer: A
32. Answer: A
33. Answer: B
34. Answer: B
35. Answer: A
36. Answer: B
37. Answer: A
38. Answer: A
39. Answer: A
40. Answer: A
41. Answer: A
42. Answer: A
43. Answer: A
44. Answer: A
45. Answer: A
46. Answer: A
47. Answer: B
48. Answer: A
49. Answer: A
50. Answer: A
51. Answer: A
52. Answer: A
53. Answer: B
54. Answer: B
55. Answer: A
56. Answer: A
57. Answer: A
58. Answer: A
59. Answer: A
60. Answer: A
61. Answer: B
62. Answer: B
63. Answer: A
64. Answer: B
65. Answer: A
66. Answer: A
67. Answer: A
68. Answer: A
69. Answer: A
70. Answer: A
71. Answer: A
72. Answer: A
73. Answer: A
74. Answer: B
75. Answer: A
76. Answer: A
77. Answer: B
78. Answer: A
79. Answer: B
80. Answer: A
81. Answer: A
82. Answer: A
83. Answer: A
84. Answer: A
85. Answer: B
86. Answer: A
87. Answer: A
88. Answer: B
89. Answer: A
90. Answer: B
91. Answer: A
92. Answer: B
93. Answer: B
94. Answer: B
95. Answer: A
96. Answer: B
97. Answer: A
98. Answer: B
99. Answer: A
100. Answer: A