1000+ Machine Design MCQ Questions and Answers - 3

Question: 11

In case of brittle material, the theory of elastic failure generally applied is

(A) maximum total strain energy theory

(B) maximum strain theory

(C) maximum shear stress theory

(D) maximum principal stress theory

Question: 12

The plastic section modulus is

(A) area multiplied by the radius of gyration

(B) the ratio of moment of inertia to radius of gyration

(C) the ratio of plastic moment capacity to the yield stress

(D) the ratio of plastic moment capacity of a section to the yield moment

Question: 13

Allen bolts are

(A) used on aircraft

(B) self locking bolts

(C) self screwing bolts

(D) provided with hexagonal depression in head

Question: 14

A reinforced concrete beam is considered as made of

(A) heterogeneous material

(B) homogeneous material

(C) composite material

(D) isotropic material

Question: 15

The bending moment at a plastic hinge is

(A) equal to plastic moment of the section

(B) equal to zero

(C) equal to yield moment of the section

(D) greater than plastic moment of the section