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. |
Use of stainless steel thruster helps in _________ |
| A. | elimination of reaction between propellants and thrusters |
| B. | increase in specific impulse |
| C. | reduction of total power consumption |
| D. | providing better orbital correction |
| Answer» B. increase in specific impulse | |
| 2. |
How are forces from a cold gas thruster measured in a testing environment? |
| A. | Using strain gage |
| B. | Using load cells |
| C. | Using force balance |
| D. | Using accelerometers |
| Answer» C. Using force balance | |
| 3. |
Which of the following gives a rough estimate of specific impulse provided by cold gas systems? |
| A. | 30-70 s |
| B. | 80-150 s |
| C. | 10-50 s |
| D. | 200-300 s |
| Answer» B. 80-150 s | |
| 4. |
Use of solenoid valves increases power consumption for a cold gas propellant system. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Thrust in RCS is produced by the momentum exchange between exhaust and the ________ |
| A. | payload |
| B. | injector |
| C. | spacecraft |
| D. | pump |
| Answer» D. pump | |
| 6. |
For a short period of operation (lasting few minutes), the gas expansion in cold gas systems is ________ |
| A. | isothermal |
| B. | adiabatic |
| C. | homogenous |
| D. | heterogeneous |
| Answer» C. homogenous | |
| 7. |
Total impulses of cold gas systems are about _______ N-sec. |
| A. | 400 |
| B. | 800 |
| C. | 1200 |
| D. | 1600 |
| Answer» D. 1600 | |
| 8. |
Selection of propellant, storage tank, and RCS design depends on? |
| A. | Mass and volume of storage tanks, maximum thrust and total impulse |
| B. | Maximum thrust and total impulse but not the storage tank mass or volume |
| C. | Maximum thrust and storage tank mass and volume but not total impulse |
| D. | None of maximum thrust, total impulse or storage tank properties |
| Answer» B. Maximum thrust and total impulse but not the storage tank mass or volume | |
| 9. |
For cold gas propellants, tank pressure is typically between __________ and __________ |
| A. | 300 Mpa; 1000 Mpa |
| B. | 100 Mpa; 500 Mpa |
| C. | 200 Mpa; 1000 Mpa |
| D. | 300 Mpa; 500 Mpa |
| Answer» B. 100 Mpa; 500 Mpa | |
| 10. |
Which of the following is not a gold gas propellant? |
| A. | Nitrogen |
| B. | Argon |
| C. | Freon 14 |
| D. | Hydrazine |
| Answer» E. | |