1000+ Mechanism and Machines MCQ Questions & Answers Pdf - 1

Question: 1

Sense of tangential acceleration of a link

(A) is perpendicular to that of velocity

(B) could be either same or opposite to velocity

(C) is opposite to that of velocity

(D) is same as that of velocity

Ans: B

could be either same or opposite to velocity

Question: 2

The locus of a point on a thread unwound from a cylinder will be

(A) cycloidal

(B) involute

(C) a circle

(D) a straight line

Ans: B

involute

Question: 3

Kinematic pairs are those which have

(A) two elements having Coroili's component

(B) minimum of two instantaneous centres

(C) two elements held together mechanically

(D) two elements having relative motion

Ans: D

two elements having relative motion

Question: 4

Maximum fluctuation of energy is the

(A) difference between the maximum and minimum energies

(B) ratio of the maximum fluctuation of energy to the work done per cycle

(C) variation of energy above and below the mean resisting torque line

(D) ratio of maximum fluctuation of speed to the mean speed

Ans: A

difference between the maximum and minimum energies

Question: 5

The shaft of a steam turbine is usually rotated at

(A) there is no such criterion

(B) much above the natural frequency of vibration

(C) much blow the natural frequency of vibration

(D) natural frequency of vibration

Ans: B

much above the natural frequency of vibration

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