Dynamics of Machinery (3151911) MCQs

MCQs of Free vibrations and damped free vibrations

Showing 21 to 30 out of 88 Questions
21.

Which of the following is a type of free vibration?

(a)

Longitudinal vibrations

(b)

Transverse vibrations

(c)

Torsional vibrations

(d)

all of the mentioned

Answer:

Option (d)

22.

In a spring-mass system, which of the following force is not considered?

(a)

Spring force

(b)

Damping force

(c)

Accelerating force

(d)

Spring force and Damping force

Answer:

Option (b)

23.

In a spring-mass-damper system, which of the following force is considered?

(a)

Spring force

(b)

Damping force

(c)

Accelerating force

(d)

All of the mentioned

Answer:

Option (d)

24.

The velocity of a particle moving with simple harmonic motion is _______ at the mean position.

(a)

zero

(b)

minimum

(c)

maximum

(d)

infinite

Answer:

Option (c)

25.

The maximum acceleration of a particle moving with simple harmonic motion is __________.

(a)

ω

(b)

ω.r

(c)

ω / 2π

(d)

2π / ω

Answer:

Option (b)

26.

At the mean position, the potential energy of the system is _______.

(a)

zero

(b)

minimum

(c)

maximum

(d)

infinite

Answer:

Option (a)

27.

As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is the same at all the times.

(a)

zero

(b)

minimum

(c)

maximum

(d)

constant

Answer:

Option (d)

28.

 In Rayleigh’s method, the _____________ at the mean position is equal to the maximum potential energy (or strain energy) at the extreme position.

(a)

minimum kinetic energy

(b)

minimum potential energy

(c)

maximum kinetic energy

(d)

maximum potential energy

Answer:

Option (c)

29.

Equilibrium method is in accordance with which of the following principle?

(a)

Taylor's principle

(b)

D'Alembert's principle

(c)

Energy conservation principle

(d)

Mayor's principal 

Answer:

Option (b)

30.

When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

(a)

simple pendulum

(b)

torsional pendulum

(c)

compound pendulum

(d)

second’s pendulum

Answer:

Option (c)

Showing 21 to 30 out of 88 Questions