1000+ Machine Design Objective Questions and Answers Pdf - 1

Question: 1

Maximum principal stress theory is applicable for

(A) brittle materials

(B) ductile materials

(C) plastic materials

(D) elastic materials

Ans: A

brittle materials

Question: 2

Splines are used when

(A) axial relative motion between shaft and hub is necessary

(B) the torque is high

(C) the power to be transmitted is high

(D) the power to be transmitted is low

Ans: A

axial relative motion between shaft and hub is necessary

Question: 3

The pressure angle in involute gear profile gear

(A) remains constant

(B) changes with position

(C) depends on gear pitch and clearance

(D) depends on speed of operation

Ans: A

remains constant

Question: 4

The stretching in a belt is controlled by

(A) reducing stress in the belt

(B) increasing belt thickness

(C) increasing belt velocity

(D) increasing centre distance

Ans: A

reducing stress in the belt

Question: 5

Small steel balls are manufactured by

(A) cold heading

(B) casting

(C) rolling

(D) turning in lathe

Ans: A

cold heading

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