MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
The ratio of the maximum fluctuation of energy to the ……. is called coefficient of fluctuation of energy. |
| A. | minimum fluctuation of energy |
| B. | workdone per cycle |
| C. | maximum fluctuation of energy |
| D. | none of the mentioned |
| Answer» C. maximum fluctuation of energy | |
| 2. |
THE_DIAMETER_OF_THE_HUB_OF_THE_FLYWHEEL_IS_USUALLY_TAKEN?$ |
| A. | equal to the diameter of the shaft |
| B. | twice the diameter of the shaft |
| C. | three times the diameter of the shaft |
| D. | four times the diameter of the shaft |
| Answer» C. three times the diameter of the shaft | |
| 3. |
In order to find the maximum bending moment on the arms, it is assumed as ? |
| A. | simply supported beam carrying a uniformly distributed load over the arm |
| B. | fixed at both ends |
| C. | cantilever beam fixed at the hub and carrying a concentrated load at the free end of the rim |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
The cross-section of the flywheel arms is usually |
| A. | elliptical |
| B. | rectangular |
| C. | I-section |
| D. | L-section |
| Answer» B. rectangular | |
| 5. |
The tensile stress in the flywheel rim due to the centrifugal force acting on the rim is given by |
| A. | ρ v<sup>2</sup>/4 |
| B. | ρ v<sup>2</sup>/2 |
| C. | 3ρ v<sup>2</sup>/4 |
| D. | ρ v<sup>2</sup> |
| Answer» E. | |
| 6. |
Due to the centrifugal force acting on the rim, the flywheel arms will be subjected to |
| A. | tensile stress |
| B. | compressive stress |
| C. | shear stress |
| D. | none of the mentioned |
| Answer» B. compressive stress | |
| 7. |
The ratio of the maximum fluctuation of energy to the ……. is called coefficient of fluctuation of energy.$ |
| A. | minimum fluctuation of energy |
| B. | workdone per cycle |
| C. | maximum fluctuation of energy |
| D. | none of the mentioned |
| Answer» C. maximum fluctuation of energy | |
| 8. |
If E = Mean kinetic energy of the flywheel, CS = Coefficient of fluctuation of speed and Δ E = Maximum fluctuation of energy, then$ |
| A. | ΔE = E / C<sub>S</sub> |
| B. | ΔE = E<sup>2</sup> × C<sub>S</sub> |
| C. | ΔE = E × C<sub>S</sub> |
| D. | ΔE = 2 E × C<sub>S</sub> |
| Answer» E. | |
| 9. |
The coefficient of fluctuation of speed is the _________ of maximum fluctuation of speed and the mean speed. |
| A. | product |
| B. | ratio |
| C. | sum |
| D. | difference |
| Answer» C. sum | |
| 10. |
The maximum fluctuation of speed is the |
| A. | difference of minimum fluctuation of speed and the mean speed |
| B. | difference of the maximum and minimum speeds |
| C. | sum of the maximum and minimum speeds |
| D. | variations of speed above and below the mean resisting torque line |
| Answer» C. sum of the maximum and minimum speeds | |