MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be |
| A. | 1/2 Iω2 |
| B. | Iω2 |
| C. | 1/2 Iωωp |
| D. | Iωωp |
| Answer» E. | |
| 2. |
WHEN_THE_PITCHING_OF_A_SHIP_IS_UPWARD,_THE_EFFECT_OF_GYROSCOPIC_COUPLE_ACTING_ON_IT_WILL_BE?$ |
| A. | to move the ship towards star-board |
| B. | to move the ship towards port side |
| C. | to raise the bow and lower the stern |
| D. | to raise the stern and lower the bow |
| Answer» B. to move the ship towards port side | |
| 3. |
The pitching of a ship is assumed to take place with simple harmonic motion? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be |
| A. | to raise the bow and stern |
| B. | to lower the bow and stern |
| C. | to raise the bow and lower the stern |
| D. | to raise the stern and lower the bow |
| Answer» D. to raise the stern and lower the bow | |
| 6. |
The rolling of a complete ship side-ways is known as pitching of a ship. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
The steering of a ship means |
| A. | movement of a complete ship up and down in vertical plane about transverse axis |
| B. | turning of a complete ship in a curve towards right or left, while it moves forward |
| C. | rolling of a complete ship side-ways |
| D. | none of the mentioned |
| Answer» C. rolling of a complete ship side-ways | |
| 8. |
The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the right. The effect of gyroscopic couple on the aeroplane will be to dip the nose and raise the tail. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be |
| A. | to dip the nose and tail |
| B. | to raise the nose and tail |
| C. | to raise the nose and dip of the tail |
| D. | to dip the nose and raise the tail |
| Answer» D. to dip the nose and raise the tail | |
| 10. |
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be$ |
| A. | 1/2 Iω<sup>2</sup> |
| B. | Iω<sup>2</sup> |
| C. | 1/2 Iωω<sub>p</sub> |
| D. | Iωω<sub>p</sub> |
| Answer» E. | |
| 11. |
The axis of precession is ____________ to the plane in which the axis of spin is going to rotate. |
| A. | parallel |
| B. | perpendicular |
| C. | spiral |
| D. | none of the mentioned |
| Answer» C. spiral | |