MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 22 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 a governor, if FC is the controlling force, r is the radius of rotation of the balls, the stability of the governor will be ensured when |
| A. | dFC /dr > FC/r |
| B. | dFC /dr < FC /r |
| C. | dFC /dr = 0 |
| D. | none of the mentioned |
| Answer» B. dFC /dr < FC /r | |
| 2. |
When the relation between the controlling force (FC) and radius of rotation (r) for a spring controlled governor is FC = a.r + b, then the governor will be |
| A. | stable |
| B. | unstable |
| C. | isochronous |
| D. | none of the mentioned |
| Answer» C. isochronous | |
| 3. |
Isochronism in a governor is desirable when |
| A. | the engine operates at low speeds |
| B. | the engine operates at high speeds |
| C. | the engine operates at variable speeds |
| D. | one speed is desired under one load |
| Answer» E. | |
| 4. |
A hunting governor is |
| A. | more stable |
| B. | less sensitive |
| C. | more sensitive |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
A governor is said to be hunting, if the speed of the engine |
| A. | remains constant at the mean speed |
| B. | is above the mean speed |
| C. | is below the mean speed |
| D. | fluctuates continuously above and below the mean speed |
| Answer» E. | |
| 6. |
The sensitiveness of a governor is given by |
| A. | ωmean/ω2 – ω1 |
| B. | ω2 – ω1/ ωmean |
| C. | ω2 – ω1/ 2ωmean |
| D. | none of the mentioned |
| Answer» C. ω2 – ω1/ 2ωmean | |
| 7. |
The ratio of the height of a Porter governor (when the length of arms and links are equal) to the height of a Watt’s governor is |
| A. | m/m+M |
| B. | M/m+M |
| C. | m + M/m |
| D. | m + M/M |
| Answer» D. m + M/M | |
| 8. |
The height of a Watt’s governor (in metres) in equal to |
| A. | 8.95/N2 |
| B. | 89.5/N2 |
| C. | 895/N2 |
| D. | 8950/N2 |
| Answer» D. 8950/N2 | |
| 9. |
IN_A_HARTNELL_GOVERNOR,_IF_A_SPRING_OF_GREATER_STIFFNESS_IS_USED,_THEN_THE_GOVERNOR_WILL_BE?$ |
| A. | more sensitive |
| B. | less sensitive |
| C. | isochronous |
| D. | none of the mentioned |
| Answer» C. isochronous | |
| 10. |
A hunting governor is$ |
| A. | more stable |
| B. | less sensitive |
| C. | more sensitive |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 11. |
A_governor_is_said_to_be_hunting,_if_the_speed_of_the_engine$ |
| A. | remains constant at the mean speed |
| B. | is above the mean speed |
| C. | is below the mean speed |
| D. | fluctuates continuously above and below the mean speed |
| Answer» E. | |
| 12. |
For a governor, if FC is the controlling force, r is the radius of rotation of the balls, the stability of the governor will be ensured when |
| A. | dF<sub>C</sub> /dr > F<sub>C</sub>/r |
| B. | dF<sub>C</sub> /dr < F<sub>C</sub> /r |
| C. | dF<sub>C</sub> /dr = 0 |
| D. | none of the mentioned |
| Answer» B. dF<sub>C</sub> /dr < F<sub>C</sub> /r | |
| 13. |
When the relation between the controlling force (FC) and radius of rotation (r) for a spring controlled governor is FC = a.r + b, then the governor will be |
| A. | stable |
| B. | unstable |
| C. | isochronous |
| D. | none of the mentioned |
| Answer» C. isochronous | |
| 14. |
The power of a governor is equal to |
| A. | (c<sup>2</sup>/1 + 2c )(m + M) h |
| B. | (2c<sup>2</sup>/1 + 2c )(m + M) h |
| C. | (3c<sup>2</sup>/1 + 2c )(m + M) h |
| D. | (4c<sup>2</sup>/1 + 2c )(m + M) h |
| Answer» E. | |
| 15. |
Isochronism_in_a_governor_is_desirable_when |
| A. | the engine operates at low speeds |
| B. | the engine operates at high speeds |
| C. | the engine operates at variable speeds |
| D. | one speed is desired under one load |
| Answer» E. | |
| 16. |
The sensitiveness of a governor is given b? |
| A. | ω<sub>mean</sub>/ω<sub>2</sub> – ω<sub>1</sub> |
| B. | ω<sub>2</sub> – ω<sub>1</sub>/ ω<sub>mean</sub> |
| C. | ω<sub>2</sub> – ω<sub>1</sub>/ 2ω<sub>mean</sub> |
| D. | none of the mentioned |
| Answer» C. ‚âà√¨‚àö¬¢<sub>2</sub> ‚Äö√Ñ√∂‚àö√ë‚àö¬® ‚âà√¨‚àö¬¢<sub>1</sub>/ 2‚âà√¨‚àö¬¢<sub>mean</sub> | |
| 17. |
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that |
| A. | governor A is more sensitive than governor B |
| B. | governor B is more sensitive than governor A |
| C. | both governors A and B are equally sensitive |
| D. | none of the mentioned |
| Answer» B. governor B is more sensitive than governor A | |
| 18. |
Which of the following governor is used to drive a gramophone ? |
| A. | Watt governor |
| B. | Porter governor |
| C. | Pickering governor |
| D. | Hartnell governor |
| Answer» D. Hartnell governor | |
| 19. |
A Hartnell governor is a |
| A. | pendulum type governor |
| B. | spring loaded governor |
| C. | dead weight governor |
| D. | inertia governor |
| Answer» C. dead weight governor | |
| 20. |
When the sleeve of a Porter governor moves upwards, the governor speed |
| A. | increases |
| B. | decreases |
| C. | remains unaffected |
| Answer» B. decreases | |
| 21. |
The ratio of the height of a Porter governor (when the length of arms and links are equal) to the height of a Watt’s governor is$ |
| A. | m/m+M |
| B. | M/m+M |
| C. | m + M/m |
| D. | m + M/M |
| Answer» D. m + M/M | |
| 22. |
The height of a Watt’s governor (in metres) in equal to |
| A. | 8.95/N<sup>2</sup> |
| B. | 89.5/N<sup>2</sup> |
| C. | 895/N<sup>2</sup> |
| D. | 8950/N<sup>2</sup> |
| Answer» D. 8950/N<sup>2</sup> | |