# 1000+ Engineering Mechanics Objective Questions and Answers Pdf - 1

Question: 1

Instantaneous centre is at infinity when the angular velocity is

(A) constant

(B) zero

(C) maximum

(D) minimum

Ans: B

zero

Question: 2

Coefficient of restitution is an impact of two bodies is given by

(A) \$\${Velocity of separation}/{Velocity of approach}\$\$

(B) \$\${Velocity of approach}/{Velocity of separation}\$\$

(C) \$\${Relative velocity of separation}/{Relative velocity of approach }\$\$

(D) \$\${Relative velocity of approach}/{Relative velocity of separation}\$\$

Ans: C

\$\${Relative velocity of separation}/{Relative velocity of approach }\$\$

Question: 3

Which one of the following is not a vector?

(A) acceleration

(B) momentum

(C) distance

(D) velocity

Ans: C

distance

Question: 4

Free body diagram means

(A) the diagram of a freely suspended body

(B) the diagram of a body with applied forces, self-weight ad reactions

(C) the diagram of a body with applied forces

(D) the diagram drawn with free hand

Ans: B

the diagram of a body with applied forces, self-weight ad reactions

Question: 5

In acceleration time curve, the velocity is represented by

(A) area under the curve

(B) ordinate of the curve

(C) slope of the curve

(D) none of the above

Ans: A

area under the curve

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