MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
Rolling is the turning of a complete ship in a curve towards left or right, while it moves forward. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The gyroscope couple does not cause an effect on a naval ship during which of these motions? |
| A. | Pitching |
| B. | Steering |
| C. | Rolling |
| D. | Lifting |
| Answer» E. | |
| 3. |
Which of the following would change during rolling of a navalship? |
| A. | Angular velocity of precession |
| B. | Angular acceleration of precession |
| C. | Angular velocity of spin |
| D. | No change occurs |
| Answer» E. | |
| 4. |
The axis of precession is parallel to axis of spin during rolling for only a selected few positions. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 5. |
Which of the following is known as the axis of precession? |
| A. | Latitudinal axis |
| B. | Longitudinal axis |
| C. | Reverse axis |
| D. | Axis of spin |
| Answer» C. Reverse axis | |
| 6. |
What will be the effect of a gyroscopic couple if the axis of precession and axis of spin become parallel? |
| A. | No effect |
| B. | Pitching |
| C. | Steering effect |
| D. | No motion |
| Answer» B. Pitching | |
| 7. |
If the movement of the ship were to occur about a vertical plane about a parallel axis then which of the following factors will be affected while pitching? |
| A. | Upward pitch |
| B. | Downward pitch |
| C. | Pitching will not occur |
| D. | Change in angular velocity of rotor |
| Answer» D. Change in angular velocity of rotor | |
| 8. |
During downward pitching, Gyroscopic couple will tend to move the ship towards ________ |
| A. | Star-board |
| B. | Port side |
| C. | Ship movement is unaffected by upward pitching |
| D. | Right side |
| Answer» C. Ship movement is unaffected by upward pitching | |
| 9. |
During upward pitching, Gyroscopic couple will tend to move the ship towards ________ |
| A. | Star-board |
| B. | Port side |
| C. | Ship movement is unaffected by upward pitching |
| D. | Left side |
| Answer» B. Port side | |
| 10. |
Maximum couple during pitching is given by : ( : angular velocity of rotor & pmax: Maximum angular velocity of precession). |
| A. | Cmax = I.( pmax)<sup>2</sup> |
| B. | Cmax = I.( )<sup>2</sup> |
| C. | Cmax = I. . pmax |
| D. | Cmax = I<sup>2</sup>. . pmax |
| Answer» D. Cmax = I<sup>2</sup>. . pmax | |
| 11. |
The pitching of the ship is assumed to take place with which of the following motion? |
| A. | Constant acceleration |
| B. | Simple Harmonic Motion |
| C. | Cycloidal |
| D. | Uniform Velocity |
| Answer» C. Cycloidal | |
| 12. |
Pitching is the movement of a ship up and down in a vertical plane about transverse axis. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following represent the maximum angular acceleration? |
| A. | <sub>max</sub> = ( <sub>1</sub>)<sup>2</sup> |
| B. | <sub>max</sub> = 2 ( <sub>1</sub>)<sup>2</sup> |
| C. | <sub>max</sub> = ( <sub>1</sub>)<sup>2</sup>/ |
| D. | <sub>max</sub> = ( <sub>1</sub>)<sup>2</sup>/ <sup>2</sup> |
| Answer» B. <sub>max</sub> = 2 ( <sub>1</sub>)<sup>2</sup> | |
| 14. |
The pitching effect of a naval-ship produces force(s) on which of the following components of the ship? |
| A. | Bearings |
| B. | Lubricant |
| C. | Seals |
| D. | Springs |
| Answer» B. Lubricant | |