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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. |
Reaction control of the Space Shuttle is achieved using ________ thrusters. |
| A. | 24 |
| B. | 48 |
| C. | 38 |
| D. | 34 |
| Answer» D. 34 | |
| 2. |
For very short pulse duration of the thruster firing, the specific impulse is degraded by __________ |
| A. | 1-5% |
| B. | 0.5-1% |
| C. | 5-25% |
| D. | 1-5% |
| Answer» D. 1-5% | |
| 3. |
What is range of side force required by a ballistic missile during its final closing maneuver just before nearing in on the target? |
| A. | 100-4500 N |
| B. | 200-6000 N |
| C. | 800-8000 N |
| D. | 1000-18000 N |
| Answer» C. 800-8000 N | |
| 4. |
___________ system determines the maneuver to be performed and _________ system sends command signals to specific thrusters for number of signals required. |
| A. | Control; control |
| B. | Guidance; guidance |
| C. | Control; guidance |
| D. | Guidance; control |
| Answer» E. | |
| 5. |
A thruster firing repeatedly for 0.010 seconds each time followed by a pause of 0.020 seconds or 0.150 seconds is an example for __________ |
| A. | step input mode |
| B. | pulsing mode |
| C. | sinusoidal mode |
| D. | ramp input mode |
| Answer» C. sinusoidal mode | |
| 6. |
Which of the following modes of firing thrusters leads to pure modulation? |
| A. | Pulsing mode |
| B. | Step input mode |
| C. | Ramp input mode |
| D. | Sinusoidal mode |
| Answer» B. Step input mode | |
| 7. |
For the application of pure torques in three directions, it requires ______ thrusters. |
| A. | 6 |
| B. | 3 |
| C. | 12 |
| D. | 9 |
| Answer» D. 9 | |
| 8. |
Reaction control systems produce larger thrust than auxiliary propulsion systems. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Rocket engines used for orbital adjustments are also called as _____________ |
| A. | boost propulsion system |
| B. | primary propulsion system |
| C. | auxiliary rockets |
| D. | strap-on motors |
| Answer» D. strap-on motors | |
| 10. |
What is the nature of thrusters and feed system for attitude control rocket engines? |
| A. | small; common pressurized feed system |
| B. | large; separate turbopump feed system |
| C. | small; separate pressurized feed system |
| D. | large; common turbopump feed system |
| Answer» B. large; separate turbopump feed system | |