MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Rocket Propulsion knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Determine the normal force coefficient of a rocket having a maximum frontal area of 0.2 m2, flying at sea level with a velocity of 100 m/s. Consider the center of gravity to be ahead of the center of pressure by 0.5 m and the corrective moment coefficient to be 2.5. |
| A. | 0.016 |
| B. | 0.012 |
| C. | 0.008 |
| D. | 0.004 |
| Answer» E. | |
| 2. |
The point on the rocket where all the aerodynamic forces balance is called as the ______________ |
| A. | center of pressure |
| B. | neutral point |
| C. | maneuvering point |
| D. | center of gravity |
| Answer» B. neutral point | |
| 3. |
For an airplane undergoing a steady pull-up maneuver along a curved flight path of the constant angle of attack, constant pitch rate of 20°/s, and having a radius of curvature of 150 m, determine the flight velocity. |
| A. | 47.66 m/s |
| B. | 52.36 m/s |
| C. | 38.33 m/s |
| D. | 69.42 m/s |
| Answer» C. 38.33 m/s | |
| 4. |
For some type of flying vehicle applications, a low-speed roll is given to avoid thrust vector deviations. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
For a satellite revolving around the earth in a circular orbit at an altitude of 350 km, determine the orbital velocity. |
| A. | 7691.3 m/s |
| B. | 7606.9 m/s |
| C. | 7532.3 m/s |
| D. | 7797.2 m/s |
| Answer» B. 7606.9 m/s | |
| 6. |
Determine the period of revolution of an artificial satellite in a circular orbit of altitude 350 km. |
| A. | 1.738 hrs |
| B. | 1.266 hrs |
| C. | 1.395 hrs |
| D. | 1.525 hrs |
| Answer» E. | |
| 7. |
Which of the following can be spin-stabilized? |
| A. | Unguided rocket projectiles |
| B. | Commercial aircrafts |
| C. | Artificial satellites |
| D. | Bullet trains |
| Answer» B. Commercial aircrafts | |
| 8. |
Which of the following statements is true for the center of gravity (cog) and the center of pressure (cop) location along the axis of a fuel powered aircraft? |
| A. | cog and cop both changes |
| B. | cog remains fixed but cop changes |
| C. | cog and cop both remain fixed |
| D. | cog changes but cop remains fixed |
| Answer» B. cog remains fixed but cop changes | |
| 9. |
Suppose an aircraft trimmed at a 10° angle of attack faces a gust that changes the angle of attack to 15°. What is the nature of the moment required to bring it back to the trimmed condition? |
| A. | Positive pitching moment |
| B. | Positive yawing moment |
| C. | Negative pitching moment |
| D. | Negative yawing moment |
| Answer» D. Negative yawing moment | |
| 10. |
Stability of a flying vehicle cannot be ensured by __________ |
| A. | control surfaces |
| B. | reaction control system |
| C. | anti-sloshing setup |
| D. | hinged multiple rocket nozzles |
| Answer» D. hinged multiple rocket nozzles | |