Explore topic-wise MCQs in Machine Dynamics.

This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

A governor is said to be isochronous when the equilibrium speed is

A. variable for different radii of rotation of governor balls
B. constant for all radii of rotation of the balls within the working range
C. constant for particular radii of rotation of governor balls
D. constant for only one radius of rotation of governor balls
Answer» C. constant for particular radii of rotation of governor balls
Discussion
2.

In a governor, if the equilibrium speed is constant for all radii of rotation of balls, the governor is said to be

A. Stable
B. unstable
C. inertial
D. isochronous
Answer» E.
Discussion
3.

The power of a governor is the work done at

A. the governor balls for change of speed
B. the sleeve for zero change of speed
C. the sleeve for a given rate of change of change
D. each governor ball for given percentage change of speed
Answer» D. each governor ball for given percentage change of speed
Discussion
4.

A spring controlled governor is said to be unstable, if the relation between the controlling force (Fc) and radius of rotation(r) is Fc = ar

A. True
B. False
C. and radius of rotation(r) is Fc = ara) Trueb) False
Answer» C. and radius of rotation(r) is Fc = ara) Trueb) False
Discussion
5.

If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be unstable.

A. True
B. False
Answer» B. False
Discussion
6.

A_GOVERNOR_IS_SAID_TO_BE_ISOCHRONOUS_WHEN_THE_EQUILIBRIUM_SPEED_IS?$

A. variable for different radii of rotation of governor balls
B. constant for all radii of rotation of the balls within the working range
C. constant for particular radii of rotation of governor balls
D. constant for only one radius of rotation of governor balls
Answer» C. constant for particular radii of rotation of governor balls
Discussion
7.

IN_A_GOVERNOR,_IF_THE_EQUILIBRIUM_SPEED_IS_CONSTANT_FOR_ALL_RADII_OF_ROTATION_OF_BALLS,_THE_GOVERNOR_IS_SAID_TO_BE?$

A. Stable
B. unstable
C. inertial
D. isochronous
Answer» E.
Discussion
8.

The power of a governor is the work done a?

A. the governor balls for change of speed
B. the sleeve for zero change of speed
C. the sleeve for a given rate of change of change
D. each governor ball for given percentage change of speed
Answer» D. each governor ball for given percentage change of speed
Discussion
9.

Calculate the vertical height of a Watt governor when it rotates at 60 r.p.m.

A. 0.248 m
B. 0.248 m
C. 0.448 m
D. 0.548 m
Answer» B. 0.248 m
Discussion
10.

A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when

A. a is + ve and b = 0
B. a = 0 and b is +ve
C. a is +ve and b is -ve
D. a is +ve and b is also +ve
Answer» B. a = 0 and b is +ve
Discussion
11.

When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

A. stable
B. unstable
C. isochronous
D. none of the mentioned
Answer» C. isochronous
Discussion
12.

A spring controlled governor is said to be unstable, if the relation between the controlling force (Fc) and radius of rotation(r) is Fc = ar

A. True
B. False
Answer» C.
Discussion
13.

The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is

A. F<sub>c</sub> = ar + b
B. F<sub>c</sub> = ar – b
C. F<sub>c</sub> = ar
D. F<sub>c</sub> = a/r + b
Answer» C. F<sub>c</sub> = ar
Discussion
14.

If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

A. stable
B. unstable
C. isochronous
D. none of the mentioned
Answer» D. none of the mentioned
Discussion