Machine Design - Interview Questions | Exam2Win

Take a timed mock test specifically for Machine Design.

66. The crest diameter of a screw thread is same as

A. major diameter

B. minor diameter

C. pitch diameter

D. core diameter

E. none of the above.

Explanation:

67. Cold working

A. increases the fatigue strength

B. decreases the fatigue strength

C. has no influence on fatigue strength

D. alone has no influence on fatigue strength

E. none of the above.

Explanation:

68. Pick up wrong statement. Fatigue strength can be increased by

A. cold working

B. shot peening

C. grinding and lapping surface

D. hot working

E. using gradual changes of section.

Explanation:

69. In most machine members, the damping capacity of the material should be

A. low

B. zero

C. high

D. could be anything

E. none of the above.

Explanation:

70. Which is correct statement ?

A. a member made of steel will generally be more rigid than a member of equal load-carrying ability made of cast iron

B. a member made of cast iron will generally be. more rigid than a member of equal load carrying ability made of steel

C. both will be equally rigid

D. which one is rigid will depend on several other factors

E. none of the above.

Explanation: