MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Aircraft Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
At exhaust of nozzle temperature is 200k and density of the flow is 1.01 kg/m3. If back pressure is 1 bar then, nozzle is ______________ |
| A. | nozzle can be under or over expanded |
| B. | under expansion |
| C. | over expanded |
| D. | design condition |
| Answer» D. design condition | |
| 2. |
____________ is the most common type of boundary layer diverter used for supersonic applications. |
| A. | Channel diverter |
| B. | Empennage |
| C. | Aileron |
| D. | Elevator |
| Answer» B. Empennage | |
| 3. |
If area ratio is 1.110 then, at which mach number flow is flowing? |
| A. | 0.68 |
| B. | 1.89 |
| C. | 2 |
| D. | 0.21 |
| Answer» B. 1.89 | |
| 4. |
Our designed Mach number is 0.8. Find the required area ratio for the design. Assume isentropic relation is valid. |
| A. | 1.038 |
| B. | 3.45 |
| C. | 5.64 |
| D. | 0.12 |
| Answer» B. 3.45 | |
| 5. |
Consider a flow with 0.5M. Now, as area decreases, velocity of the flow inside convergent section _____________ |
| A. | increases |
| B. | decreases |
| C. | reduces by half always |
| D. | velocity is independent of area |
| Answer» B. decreases | |
| 6. |
Only convergent section will be used for supersonic speeds. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Performance of engine can be controlled by nozzle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the function of a typical nozzle? |
| A. | To expand exhaust flow |
| B. | To reduce flow velocity |
| C. | To generate lift to fly |
| D. | To increase pressure |
| Answer» B. To reduce flow velocity | |