Explore topic-wise MCQs in Machine Dynamics.

This section includes 12 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.

For isochronous Hartnell governor

A. mg + S1 / mg + S2 = r1/r2
B. mg – S1 / mg – S2 = r2/r1
C. S1/S2 = r1/r2
D. S2/S1 = r1/r2
Answer» B. mg – S1 / mg – S2 = r2/r1
Discussion
2.

A very sensitive governor will cause hunting.

A. True
B. False
Answer» B. False
Discussion
3.

FOR_ISOCHRONOUS_HARTNELL_GOVERNOR?$

A. mg + S<sub>1</sub> / mg + S<sub>2</sub> = r<sub>1</sub>/r<sub>2</sub>
B. mg – S<sub>1</sub> / mg – S<sub>2</sub> = r<sub>2</sub>/r<sub>1</sub>
C. S<sub>1</sub>/S<sub>2</sub> = r<sub>1</sub>/r<sub>2</sub>
D. S<sub>2</sub>/S<sub>1</sub> = r<sub>1</sub>/r<sub>2</sub>
Answer» B. mg ‚Äö√Ñ√∂‚àö√ë‚àö¬® S<sub>1</sub> / mg ‚Äö√Ñ√∂‚àö√ë‚àö¬® S<sub>2</sub> = r<sub>2</sub>/r<sub>1</sub>
Discussion
4.

Effort_of_a_governor_is_the$

A. mean force exerted at the sleeve for a given percentage change of speed
B. workdone at the sleeve for maximum equilibrium speed
C. mean force exerted at the sleeve for maximum equilibrium speed
D. none of the mentioned
Answer» B. workdone at the sleeve for maximum equilibrium speed
Discussion
5.

A very sensitive governor will cause hunting?

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

When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be

A. stable
B. unstable
C. isochronous
D. hunt
Answer» E.
Discussion
7.

In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

A. less sensitive
B. more sensitive
C. unaffected of sensitivity
D. isochronous
Answer» B. more sensitive
Discussion
8.

A Porter governor can not be isochronous.

A. True
B. False
Answer» B. False
Discussion
9.

A governor is said to be isochronous when range of speed is zero for all radii of rotation of the balls within the working range, neglecting friction.

A. True
B. False
Answer» B. False
Discussion
10.

When the radius of rotation of balls ______________ as the equilibrium speed increases, the governor is said to be unstable.

A. remains constant
B. decreases
C. increases
D. none of the mentioned
Answer» C. increases
Discussion
11.

A governor is said to be stable, if the

A. radius of rotation of balls increases as the equilibrium speed decreases
B. radius of rotation of balls decreases as the equilibrium speed decreases
C. radius of rotation of balls increases as the equilibrium speed increases
D. radius of rotation of balls decreases as the equilibrium speed increases
Answer» D. radius of rotation of balls decreases as the equilibrium speed increases
Discussion
12.

Sensitiveness of the governor is defined as the ratio of the

A. mean speed to the maximum equilibrium speed
B. mean speed to the minimum equilibrium speed
C. difference of the maximum and minimum equilibrium speeds to the mean speed
D. sum of the maximum and minimum equilibrium speeds to the mean speed
Answer» D. sum of the maximum and minimum equilibrium speeds to the mean speed
Discussion