When two rotors rotate in one direction and middle one rotates in opposite...

Q.

When two rotors rotate in one direction and middle one rotates in opposite direction, then torsional vibration occurs with

A. Four nodes

B. Three nodes

C. Two Nodes

D. Single node

Answer & Explanation

Answer : Option: C

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Q.

One of the methods of vibration control is, controlling the natural frequencies of the system and ______ under excitation.

A. Introducing a damping

B. Use of vibration isolator

C. addition of vibration absorber

D. avoiding resonance

Answer & Explanation

Q.

Magnification factor is defined as the ratio of

A. Steady state amplitude and static deflection of spring

B. Steady state amplitude and zero frequency amplitude

C. Both options (1) and (2)

D. Force transmitted to support and inertia force

Answer & Explanation

Q.

The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is

A. one

B. two

C. three

D. four

Answer & Explanation

Q.

For the free torsional vibration of a geared system which of the following statement is true?

A. Backlash in geared system

B. High inertia of shaft

C. Gearing teeth always in contact

D. High inertia of gear

Answer & Explanation

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When two rotors rotate in one direction and middle one rotates in opposite...

Q. When two rotors rotate in one direction and middle one rotates in opposite direction, then torsional vibration occurs with

Start Discussion :

Comments :

More Questions Dynamics of Machinery:

Q. One of the methods of vibration control is, controlling the natural frequencies of the system and ______ under excitation.

Q. Magnification factor is defined as the ratio of

Q. The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is

Q. For the free torsional vibration of a geared system which of the following statement is true?

Q.

When two rotors rotate in one direction and middle one rotates in opposite direction, then torsional vibration occurs with

Q.

One of the methods of vibration control is, controlling the natural frequencies of the system and ______ under excitation.

Q.

Magnification factor is defined as the ratio of

Q.

The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is

Q.

For the free torsional vibration of a geared system which of the following statement is true?