MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the temperature ratio across a moving shock wave in ambient air if the pressure ratio is 8.5? |
| A. | 1.43 |
| B. | 2.37 |
| C. | 4.21 |
| D. | 3.82 |
| Answer» C. 4.21 | |
| 2. |
How is total enthalpy related in a stationary shock wave? |
| A. | Constant |
| B. | h2 > h1 |
| C. | h2 < h1 |
| D. | h02 < h01 |
| Answer» B. h2 > h1 | |
| 3. |
If the wave velocity is 900 m/s and the density ratio across the shock wave is 0.6, then what is the value of velocity of induced mass motion behind the wave? |
| A. | 400 m/s |
| B. | 360 m/s |
| C. | 180 m/s |
| D. | 980 m/s |
| Answer» C. 180 m/s | |
| 4. |
Which of these is the governing parameters for change across shock wave when it is moving? |
| A. | Mach number |
| B. | Density |
| C. | Pressure ratio |
| D. | Velocity ratio |
| Answer» D. Velocity ratio | |
| 5. |
Hugoniot equation is physically dependent on whether the shock wave is stationary or moving. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
What is the continuity equation for a moving shock wave? |
| A. | ρ1W = ρ2up |
| B. | ρ1W = ρ2(W – up) |
| C. | ρ1(W + up) = ρ2up |
| D. | ρ1W = ρ2(W + up) |
| Answer» C. ρ1(W + up) = ρ2up | |
| 7. |
Shock tube is an application of steady motion of the shock waves. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
The flow properties of the moving wave depends on which property/properties? |
| A. | Direction |
| B. | Time |
| C. | Both direction and time |
| D. | Temperature |
| Answer» D. Temperature | |
| 9. |
What happens when normal shock wave propagates into laboratory facility? |
| A. | Induces gas ahead of it |
| B. | Induces gas behind it |
| C. | Leaves a small area of vacuum behind it |
| D. | Leaves a small area of vacuum ahead of it |
| Answer» C. Leaves a small area of vacuum behind it | |
| 10. |
What happens when the shock wave propagates in the opposite direction with the same magnitude as wave velocity? |
| A. | Velocity increases |
| B. | Velocity decreases |
| C. | Appears stationary |
| D. | Becomes sonic |
| Answer» D. Becomes sonic | |