Fundamentals of Machine Design (3141907) MCQ

MCQs of Design Against Fluctuating Loads

MCQ No - 1

The yield point in static loading is ___________as compared to fatigue loading.

(A) higher
(B) lower
(C) same

A
MCQ No - 2

The stress concentration factor is defined as the ratio of

(A) maximum stress to the endurance limit
(B) nominal stress to the endurance limit
(C) maximum stress to the nominal stress
(D) nominal stress to the maximum stress

C
MCQ No - 3

Stress concentration is caused due to

(A) variation in properties of the material from point to point in a member
(B) pitting at points or areas at which loads on a member are applied
(C) the abrupt change of section
(D) all of the above

D
MCQ No - 4

The fatigue life of a part can be improved by

(A) electroplating
(B) shot peening
(C) polishing
(D) coating

B
MCQ No - 5

Failure of a material is called fatigue when it fails

(A) at the elastic limit
(B) below the elastic limit
(C) at the yield point
(D) below the yield point

D