Dynamics of Machinery (3151911) MCQ

MCQs of Free vibrations and damped free vibrations

MCQ No - 1

Frequency of vibrations is usually expressed in

(A)

number of cycles per hour

(B)

number of cycles per minute

(C)

number of cycles per second

(D)

none of these


C
MCQ No - 2

The particles of a body move ________ its axis in torsional vibrations.

(A)

in a circle about

(B)

parallel to

(C)

perpendicular to

(D)

away from


A
MCQ No - 3

In a spring-mass system, if the mass is halved and the spring stiffness is doubled, the natural frequency is

(A)

halved

(B)

doubled

(C)

unchanged

(D)

quadrupled


B
MCQ No - 4

In free vibrations, the velocity vector leads the displacement vector by

(A)

$$\pi$$

(B)

$$\pi/2$$

(C)

$$\pi/3$$

(D)

$$2\pi/3$$


B
MCQ No - 5

In free vibrations, the acceleration vector leads the displacement vector by

(A)

$$\pi$$

(B)

$$\pi/2$$

(C)

$$\pi/3$$

(D)

$$2\pi/3$$


A