MCQOPTIONS
Saved Bookmarks
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. |
A rocket engine moving at 500 m/s produces a total thrust of 9563 N, consuming propellants at the rate of 4.55 kg/s. The energy content of the propellants is 5.35 MJ/kg. Find the effective exhaust velocity. |
| A. | 2100 m/s |
| B. | 3936 m/s |
| C. | 1555 m/s |
| D. | 1400 m/s |
| Answer» B. 3936 m/s | |
| 2. |
Which of the following can typically achieve maximum effective exhaust velocity? |
| A. | Electrostatic and electromagnetic |
| B. | Arcjet |
| C. | Solar heated H<sub>2</sub> |
| D. | Nuclear fission |
| Answer» B. Arcjet | |
| 3. |
Which of the following types of engines use Xe as a typical working fluid? |
| A. | Resistojets |
| B. | Electro thermal |
| C. | Hall effect |
| D. | Nuclear fission |
| Answer» D. Nuclear fission | |
| 4. |
In which of the propulsion systems is the maximum temperature achieved? |
| A. | Chemical |
| B. | Nuclear |
| C. | Arc heating |
| D. | Solar heating |
| Answer» D. Solar heating | |
| 5. |
What is the propulsion duration of resistojets? |
| A. | Few seconds |
| B. | Few minutes |
| C. | Few days |
| D. | Few weeks |
| Answer» D. Few weeks | |
| 6. |
Which of the following engines can achieve the maximum specific impulse of 5000 s? |
| A. | Ion-electrostatic |
| B. | Nuclear fission |
| C. | Hall effect |
| D. | Solar heating |
| Answer» B. Nuclear fission | |
| 7. |
What is the typical order of magnitude of mass flow rate (in kg/s) for a chemical rocket engine? |
| A. | 10 |
| B. | 0.1 |
| C. | 0.01 |
| D. | 1 |
| Answer» D. 1 | |
| 8. |
What is a sensible specific impulse value for a nuclear fission type rocket engine among the given options? |
| A. | 300 s |
| B. | 600 s |
| C. | 800 s |
| D. | 2000 s |
| Answer» D. 2000 s | |
| 9. |
Which of the following vehicles is used where the flight time is long? |
| A. | Electrical propulsion unit |
| B. | Solid propulsion system |
| C. | Liquid propulsion system |
| D. | Hybrid propulsion system |
| Answer» B. Solid propulsion system | |
| 10. |
Which of the following is not true about chemical rockets? |
| A. | Relatively low values of specific impulse |
| B. | Relatively light machinery |
| C. | Very high thrust capability |
| D. | Very low specific power |
| Answer» E. | |