Dynamics of Machinery (3151911) MCQ

MCQs of Forced damped vibrations

MCQ No - 1

Transmissibility is the ratio of 

(A)

damping force to the spring force

(B)

force transmitted to the foundation to the force applied to the machine

(C)

force applied to the machine to the force transmitted to the foundation

(D)

force transmitted to the foundation to the damping force


B
MCQ No - 2

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as

(A)

damping factor

(B)

damping coefficient

(C)

logarithmic decrement

(D)

magnification factor


D
MCQ No - 3

In forced vibrations, the magnitude of damping force at resonance is equal to the impressed force.

(A)

Correct

(B)

Incorrect

(C)

Can't say

(D)

Not always


A
MCQ No - 4

In which direction does the damping force act?

(A)

Opposite to the motion

(B)

Along with the motion

(C)

Perpendicular to motion

(D)

Variable


A
MCQ No - 5

In which direction does the accelerating force act?

(A)

Opposite to the motion

(B)

Along with the motion

(C)

Perpendicular to motion

(D)

Variable


B