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. |
Which of the following has metal oxide pyrotechnic composition? |
| A. | ZPP |
| B. | Ni-Al laminate |
| C. | ZHPP |
| D. | HMTD |
| Answer» B. Ni-Al laminate | |
| 2. |
The kind of ignition system that allows multiple restarts for an engine is ____________ |
| A. | pyrotechnic igniter |
| B. | spark igniter |
| C. | hypergolic igniter |
| D. | pyrotechnic initiator |
| Answer» C. hypergolic igniter | |
| 3. |
LE-5A rocket engine and its derivatives were designed by ____________ |
| A. | France |
| B. | India |
| C. | China |
| D. | Japan |
| Answer» E. | |
| 4. |
Which of the following describes the typical range of specific impulse in vacuum produced by the major LOX and LH propellant driven engines? |
| A. | 400-500 s |
| B. | 300-400 s |
| C. | 150-300 s |
| D. | 0-150 s |
| Answer» B. 300-400 s | |
| 5. |
YF 73 engine was used by which of these vehicles? |
| A. | Space Shuttle |
| B. | HII |
| C. | Long March |
| D. | Ariane 2 |
| Answer» D. Ariane 2 | |
| 6. |
Which of the following engines were used in Ariane 5 vehicle?a) RS-68b) Vulcainc) HM7( |
| A. | RS-68 |
| B. | Vulcain |
| C. | HM7(A) |
| D. | RL 10-B2 |
| Answer» C. HM7(A) | |
| 7. |
Which of the following ranges describes the typical value of mixture ratio in the engines: SSME, RS-68, LE-5A and Vulcan? |
| A. | 4-7 |
| B. | 12-15 |
| C. | 1-4 |
| D. | 15-20 |
| Answer» B. 12-15 | |
| 8. |
Overall engine specific impulse is influenced by ____________ |
| A. | nozzle area ratio and chamber pressure |
| B. | nozzle area ratio only |
| C. | chamber pressure only |
| D. | neither nozzle area ratio nor chamber pressure |
| Answer» B. nozzle area ratio only | |
| 9. |
If δ denotes inert mass fraction and λ denotes the payload fraction, what is the formula for parametric mass ratio (r)? |
| A. | r = δ/λ |
| B. | r = λ/δ |
| C. | r = λ – δ |
| D. | r = λ + δ |
| Answer» E. | |
| 10. |
For a rocket with an initial mass of 15,000 kg and carrying a payload of 1000 kg, determine the velocity change if it was ground launched and has an equivalent exhaust velocity of 3000 m/s. Assume the structural mass coefficient to be 0.24. |
| A. | 3533 m/s |
| B. | 3967 m/s |
| C. | 3706 m/s |
| D. | 4295 m/s |
| Answer» D. 4295 m/s | |