MCQ Questions and Answers on Dynamics of Machinery

Q.

Often an unbalance of forces is produced in rotary or reciprocating machinery due to the ______.

A. Centripetal forces

B. Centrifugal forces

C. Friction forces

D. Inertia forces

Discuss

Answer : Option:- D

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Find the critical speed of the shaft when natural frequency 12 rad/sec and wavelength of 4 m.

A. 0.764 m/sec

B. 7.64 m/sec

C. 76.4m/sec

D. 764 m/sec

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Amplitude in two rotor torsional vibrations is in

A. Same direction

B. Opposite direction

C. Perpendicular direction

D. Parallel to the forces

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

The sound field which is formed by multiple reflections from obstacles or barriers like walls, floor and celling surfaces etc in the room is called as

A. Near field

B. Reverberant field

C. Free field

D. Sound field

Discuss

Answer : Option:- B

Explanation :

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Q.

Silence zone is referred as areas upto 100 meters around

A. hotels

B. stadium

C. residential area

D. school

Discuss

Answer : Option:- D

Explanation :

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Q.

The wrong sound in the wrong place and at wrong time is called as

A. Sound

B. Vibration

C. Harness

D. Noise

Discuss

Answer : Option:- D

Explanation :

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Q.

A simple pendulum of length 5 m, with a bob of mass 1 kg, is in simple harmonic motion as it passes through its mean position, the bob has a speed of 5 m/s. The net force on the bob at the mean

A. 0

B. 2.5

C. 3

D. none of these

Discuss

Answer : Option:- A

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Condition for using seismometer is

A. Low natural frequency

B. High natural frequemcy

C. hogh damping

D. low damping

Discuss

Answer : Option:- B

Explanation :

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Q.

Which of the following untuned vibration absorber uses viscous material?

A. Torsional vibration absorber

B. Centrifugal pendulum absorber

C. Lanchester Damper

D. Houdaille dampe

Discuss

Answer : Option:- D

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

The firing order in case of four cylinder inline engines is usually

A. 1-2-4-3

B. 1-3-4-2

C. 1-4-3-2

D. Either 1-3-4-2 or 1-4-3-2

Discuss

Answer : Option:- D

Explanation :

Discuss here! No Explaination Available for These Question.

MCQ Questions and Answers on Dynamics of Machinery

Q. Often an unbalance of forces is produced in rotary or reciprocating machinery due to the ______.

Q. Find the critical speed of the shaft when natural frequency 12 rad/sec and wavelength of 4 m.

Q. Amplitude in two rotor torsional vibrations is in

Q. The sound field which is formed by multiple reflections from obstacles or barriers like walls, floor and celling surfaces etc in the room is called as

Q. Silence zone is referred as areas upto 100 meters around

Q. The wrong sound in the wrong place and at wrong time is called as

Q. A simple pendulum of length 5 m, with a bob of mass 1 kg, is in simple harmonic motion as it passes through its mean position, the bob has a speed of 5 m/s. The net force on the bob at the mean

Q. Condition for using seismometer is

Q. Which of the following untuned vibration absorber uses viscous material?

Q. The firing order in case of four cylinder inline engines is usually

Q.

Often an unbalance of forces is produced in rotary or reciprocating machinery due to the ______.

Q.

Find the critical speed of the shaft when natural frequency 12 rad/sec and wavelength of 4 m.

Q.

Amplitude in two rotor torsional vibrations is in

Q.

The sound field which is formed by multiple reflections from obstacles or barriers like walls, floor and celling surfaces etc in the room is called as

Q.

Silence zone is referred as areas upto 100 meters around

Q.

The wrong sound in the wrong place and at wrong time is called as

Q.

A simple pendulum of length 5 m, with a bob of mass 1 kg, is in simple harmonic motion as it passes through its mean position, the bob has a speed of 5 m/s. The net force on the bob at the mean

Q.

Condition for using seismometer is

Q.

Which of the following untuned vibration absorber uses viscous material?

Q.

The firing order in case of four cylinder inline engines is usually