51. A body which absorbs all radiation falling on it is known as
(A) Opaque body
(B) Black body
(C) Transparent body
(D) Ideal body
Answer: - Black body
52. In thermodynamics, Carnot cycle is also called as
(A) Constant Pressure Cycle
(B) Constant Volume Cycle
(C) Constant Entropy Cycle
(D) Constant Heat Cycle
Answer: - Constant Heat Cycle
53. Oilless bearing refer to
(B) Ball and roller bearing
(C) Thrust bearing
(D) Journal bearing
Answer: - Self lubricating bearing
54. Gantt charts are used for
(A) Machine utilization
(B) Production schedule
(C) Inventory control
(D) Sales forecasting
Answer: - Production schedule
55. An alloy of copper and zinc is called
(A) Bronze
(B) Brass
(C) Gun metal
(D) Y-alloy
Answer: - Brass
56. Twisting couple in a shaft introduces in it
(A) Bending Moment
(B) Deflection
(C) Shear Stress
(D) Shear Strain
Answer: - Shear Stress
57. The isentropic expansion of superheated steam is fairly represented by pvn =constant, where n=
(A) 1.315
(B) 1
(C) 1.27
(D) 1.41
Answer: - 1.315
58. When radial force in cutting operation is too large, it will cause
(A) Best finish
(B) Chatter and poor finish
(C) Finish has nothing to do with radial force
(D) Shorten tool life
Answer: - Chatter and poor finish
59. “Ergonomics” is related to human
(A) Comfort
(B) Safety
(C) Both A and B
(D) None of the above
Answer: - Both A and B
60. Which of the following is not correct procedure to increase the fatigue limit ?
(A) Cold working
(B) Shot peening
(C) Surface decarburization
(D) Under-stressing
Answer: - Surface decarburization
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