MCQ Questions and Answers on Dynamics of Machinery

Q.

In which direction does the damping force acts?

A. Opposite to the motion

B. Along the motion

C. Perpendicular to motion

D. Variable

Discuss

Answer : Option:- A

Explanation :

Damping force is always opposite to motion of body.

Q.

In case of a harmonically excited single DOF system, the frequency of steady state vibration of the mass is equal to the

A. Natural frequency

B. Damped natural frequency

C. Excitation frequency

D. Combination of natural, damped natural and excitation frequencies

Discuss

Answer : Option:- C

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

If damping ratio is greater than unity then system is called as

A. Critically damped system

B. Over damped system

C. Under damped system

D. None of these

Discuss

Answer : Option:- B

Explanation :

If,
Damping factor ζ= 1, --- Critically Damped System.
Damping factor ζ< 1, --- Under Damped System.
Damping factor ζ> 1, --- Over Damped System.

Q.

Increasing which of the given factors would result in increase of free torsional vibration?

A. Radius of gyration

B. Mass moment of inertia

C. Polar moment of inertia

D. Length

Discuss

Answer : Option:- C

Explanation :

As frequency of vibration is directly proportional with polar moment of inertia.

Q.

Answer the correct sequence of measurement

A. Pick Up-Signal-Display-Data

B. Data-diplay-Pickup-signal

C. Signal-Pickup-Data-Display

D. Display-Data-Signal-Pickup

Discuss

Answer : Option:- A

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Capacitive pick up is

A. Contacting type

B. Non contacting type

C. Noncontacting active type

D. Passive type

Discuss

Answer : Option:- C

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Unit of damping coefficient is

A. N

B. Ns/m

C. N/m

D. m

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Motion represented by overdamped and critical damped system is

A. aperiodic motion

B. periodic motion

C. all of these

D. none of these

Discuss

Answer : Option:- A

Explanation :

Motion represented by overdamped and critical damped system is aperiodic in nature.

Q.

Which of the following relations is true when springs are connected parallelly?

A. Ke = K1 + K2

B. (1 / Ke) = (1/K1) + (1/ K2)

C. Ke = (1/K1) + (1/ K2)

D. all of these

Discuss

Answer : Option:- A

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

What is alternate name to critical speed?

A. Highest speed

B. Best speed

C. Whirling speed

D. Random speed

Discuss

Answer : Option:- C

Explanation :

Critical speed also called as whirling speed.

« Previous
...
2
3
4
5
6
7
8
9
10
11
12
...
Next »

MCQ Questions and Answers on Dynamics of Machinery

Q. In which direction does the damping force acts?

Q. In case of a harmonically excited single DOF system, the frequency of steady state vibration of the mass is equal to the

Q. If damping ratio is greater than unity then system is called as

Q. Increasing which of the given factors would result in increase of free torsional vibration?

Q. Answer the correct sequence of measurement

Q. Capacitive pick up is

Q. Unit of damping coefficient is

Q. Motion represented by overdamped and critical damped system is

Q. Which of the following relations is true when springs are connected parallelly?

Q. What is alternate name to critical speed?

Q.

In which direction does the damping force acts?

Q.

In case of a harmonically excited single DOF system, the frequency of steady state vibration of the mass is equal to the

Q.

If damping ratio is greater than unity then system is called as

Q.

Increasing which of the given factors would result in increase of free torsional vibration?

Q.

Answer the correct sequence of measurement

Q.

Capacitive pick up is

Q.

Unit of damping coefficient is

Q.

Motion represented by overdamped and critical damped system is

Q.

Which of the following relations is true when springs are connected parallelly?

Q.

What is alternate name to critical speed?