Engineering Mechanics - Interview Questions | Exam2Win

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71. 101. The maximum frictional force which comes into play when a body just begins to slide over another surface is called

A. limiting friction

B. sliding friction

C. rolling friction

D. kinematic friction

E. dynamic friction.

Explanation:

72. 108. A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

A. 25

B. 50

C. 100

D. 250

E. 500.

Explanation:

73. 113. The C.G. of a solid hemisphere lies on the central radius 3r

A. at distance � from the plane base 3r

B. at distance � from the plane base 3r

C. at distance � from the plane base 3r

D. at distance � from the plane base or

E. at distance � from the plane base.

Explanation:

74. 128. In the lever of third order, load W, effort P and fulcrum F are oriented as follows

A. W between P and F

B. F between W and P

C. P between W and F

D. W, P and F all on one side

E. none of the above.

Explanation:

75. 98. The algebraic sum of moments of the forces forming couple about any point in their plane is

A. equal to the moment of the couple

B. constant

C. both of above are correct

D. both of above are wrong

E. none of the above.

Explanation: