Machine Design - Interview Questions | Exam2Win

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86. If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

A. 0.2

B. 0.25

C. 0.50

D. 0.6

E. 0.75.

Explanation:

87. A key capable of tilting in a recess milled out in a shaft is known as

A. wood-ruff key

B. feather key

C. flat saddle key

D. gib head key

E. hollow saddle key.

Explanation:

88. In order to obtain bolt of uniform strength

A. increase shank diameter

B. increase its length

C. drill an axial hole through head upto threaded portion so that shank area is equal to root area of thread

D. tighten die bolt properly

E. all of the above.

Explanation:

89. The function of a washer is to

A. provide cushioning effect

B. provide bearing area

C. absorb shocks and vibrations

D. provide smooth surface in place of rough surface

E. act as a locking device.

Explanation:

90. If a load W is applied instantaneously on a bar; then the stress induced in bar will

A. be independent of ratio of mass of load W to mass of bar (y)

B. increase with increase in y

C. decrease with decrease in y

D. depend on other considerations

E. none of the above.

Explanation: