MCQ Questions and Answers on Dynamics of Machinery

Q.

Quality factor is defined as

A. The minimum value of magnification factor

B. The maximum value of magnification factor

C. The magnification factor at the excitation frequency equal to the damped natural frequency

D. The magnification factor at the excitation frequency equal to the natural frequency

Discuss

Answer : Option:- D

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

In a magneto-rheological damper, fluid changes its viscosity according to applied ______ field.

A. electric

B. sress

C. magnitic

D. None of the above

Discuss

Answer : Option:- C

Explanation :

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Q.

Resonance is the phenomenon when the frequency of external force is

A. twice the natural frequency of the system

B. half the natural frequency of the system

C. same the natural frequency of the system

D. none of these

Discuss

Answer : Option:- C

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

A motion is aperiodic at what value of the damping factor?

A. 1.0 or above

B. 0.5

C. 0.2

D. 0.866

Discuss

Answer : Option:- A

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Hydraulic door closer is an example of

A. critical damped system

B. over damped system

C. under damped system

D. all of these

Discuss

Answer : Option:- A

Explanation :

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Q.

A system in dynamic balance implies that

A. the system is critically damped

B. there is no critical speed in the system

C. the system is also statically balanced

D. there will absolutely no wear of bearings

Discuss

Answer : Option:- C

Explanation :

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Q.

Single noise source in most cities is caused by?

A. Air traffic

B. Water traffic

C. Road traffic

D. Rail traffic

Discuss

Answer : Option:- C

Explanation :

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Q.

The ratio of the intensity of sound that is obsorbed from the boundary or material to the intensity of sound incident on it is called as

A. Absorption coefficient

B. Transmission coefficient

C. Reflection coefficient

D. None of above

Discuss

Answer : Option:- A

Explanation :

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Q.

The ratio of the intensity of sound that is reflected from the boundary to the intensity of sound incident on it is called as

A. Absorption coefficient

B. Transmission coefficient

C. Reflection coefficient

D. None of these

Discuss

Answer : Option:- C

Explanation :

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Q.

Consider the following statements for completely balancing a single rotating mass:
1. Another rotating mass placed diametrically opposite in the same plane balances the unbalanced mass.
2.Another rotating mass placed diametrically opposite in a parallel plane balances the unbalanced mass.
3.Two masses placed in different planes balance the unbalanced mass.
Which of the above statement is/are correct?

A. 1 only

B. 1 and 2

C. 2 and 3

D. 1 and 3

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

MCQ Questions and Answers on Dynamics of Machinery

Q. Quality factor is defined as

Q. In a magneto-rheological damper, fluid changes its viscosity according to applied ______ field.

Q. Resonance is the phenomenon when the frequency of external force is

Q. A motion is aperiodic at what value of the damping factor?

Q. Hydraulic door closer is an example of

Q. A system in dynamic balance implies that

Q. Single noise source in most cities is caused by?

Q. The ratio of the intensity of sound that is obsorbed from the boundary or material to the intensity of sound incident on it is called as

Q. The ratio of the intensity of sound that is reflected from the boundary to the intensity of sound incident on it is called as

Q.

Quality factor is defined as

Q.

In a magneto-rheological damper, fluid changes its viscosity according to applied ______ field.

Q.

Resonance is the phenomenon when the frequency of external force is

Q.

A motion is aperiodic at what value of the damping factor?

Q.

Hydraulic door closer is an example of

Q.

A system in dynamic balance implies that

Q.

Single noise source in most cities is caused by?

Q.

The ratio of the intensity of sound that is obsorbed from the boundary or material to the intensity of sound incident on it is called as

Q.

The ratio of the intensity of sound that is reflected from the boundary to the intensity of sound incident on it is called as