MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The flywheel stores the potential energy. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The engine has the flywheel of mass 7 tons and the radius of gyration is 1.7 m. The fluctuation of energy is 55 kN-m. The mean speed of the engine is 150 rpm. What is the coefficient of fluctuation of speed? |
| A. | 0.021 |
| B. | 0.011 |
| C. | 0.031 |
| D. | 0.041 |
| Answer» C. 0.031 | |
| 3. |
The steam engine has a flywheel which is having a radius of gyration of 1.1 m and mass of 2200 kg. The starting torque is 1550 Nm and assumed constant. What is the angular acceleration of the flywheel? |
| A. | 0.54 rad/s<sup>2</sup> |
| B. | 0.58 rad/s<sup>2</sup> |
| C. | 0.62 rad/s<sup>2</sup> |
| D. | 0.52 rad/s<sup>2</sup> |
| Answer» C. 0.62 rad/s<sup>2</sup> | |
| 4. |
In the single-cylinder, single acting, four-stroke gas engine, the total fluctuation of speed is not to exceed 3 percent of the mean speed. What is the coefficient of fluctuation of speed? |
| A. | 0.04 |
| B. | 0.03 |
| C. | 0.09 |
| D. | 0.06 |
| Answer» E. | |
| 5. |
Which of the following is the expression of the maximum fluctuation of energy in a flywheel where I = mass moment of inertia of the flywheel, Cs = coefficient of fluctuation of speed, = mean angular speed of 1 and 2, and E = mean kinetic energy of the flywheel? |
| A. | I* *( <sub>1</sub>+ <sub>2</sub>) |
| B. | I* *C<sub>s</sub> |
| C. | 2*E<sup>2</sup>*C<sub>s</sub> |
| D. | I* <sup>2</sup>*C<sub>s</sub> |
| Answer» E. | |
| 6. |
What is the coefficient of fluctuation of speed? |
| A. | The ratio of the maximum fluctuation of speed to the mean speed |
| B. | The ratio of the maximum fluctuation of energy to the mean speed |
| C. | The ratio of the minimum fluctuation of energy to the mean speed |
| D. | The ratio of the work done per cycle to the mean speed |
| Answer» B. The ratio of the maximum fluctuation of energy to the mean speed | |
| 7. |
Given that maximum fluctuation of energy is 2000 N-m/s and coefficient of fluctuation of speed is 0.02. What is the mean kinetic energy of flywheel? |
| A. | 50 kN-m/s |
| B. | 40 kN-m/s |
| C. | 30 kN-m/s |
| D. | 20 kN-m/s |
| Answer» B. 40 kN-m/s | |
| 8. |
Which of the following is true about the flywheel? |
| A. | Flywheel regulates speed over a period of time |
| B. | Flywheel takes care of the quantity of fluid |
| C. | Flywheel controls ( frac{dN}{dt} ) |
| D. | Flywheel regulates the speed by regulating the quantity of charge of the prime mover |
| Answer» D. Flywheel regulates the speed by regulating the quantity of charge of the prime mover | |
| 9. |
What is the coefficient of fluctuation of energy? |
| A. | The ratio of the maximum fluctuation of energy to the minimum fluctuation of energy |
| B. | The ratio of the maximum fluctuation of energy to the work done per cycle |
| C. | The ratio of the minimum fluctuation of energy to the maximum fluctuation of energy |
| D. | The ratio of the work done per cycle to the maximum fluctuation of energy |
| Answer» C. The ratio of the minimum fluctuation of energy to the maximum fluctuation of energy | |
| 10. |
What is the maximum fluctuation of energy? |
| A. | It is the sum of maximum and minimum energies |
| B. | It is the ratio of the maximum and minimum energies |
| C. | It is the ratio of the mean resisting torque to the work done per cycle |
| D. | It is the difference between the maximum and minimum energies |
| Answer» E. | |