MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 a velocity potential? |
| A. | ∇ × ϕ |
| B. | ∇ϕ |
| C. | – ∇ × V |
| D. | (∇ × V)ϕ |
| Answer» C. – ∇ × V | |
| 2. |
According to d’Alember’s paradox, what happens when the flow over a body is irrotational? |
| A. | Results in infinite drag |
| B. | Results in zero drag |
| C. | Results in formation of vortices behind the body |
| D. | Results in body forces |
| Answer» C. Results in formation of vortices behind the body | |
| 3. |
What is the value of angular velocity at a point on the solid surface outside the boundary layer where the velocity becomes equal to free stream velocity? |
| A. | Infinite |
| B. | One |
| C. | Zero |
| D. | 0.5 |
| Answer» D. 0.5 | |
| 4. |
Which of these conditions is not met at a point for irrotational flow? |
| A. | \(\frac {∂w}{∂y} = \frac {∂v}{∂z}\) |
| B. | \(\frac {∂w}{∂x} = \frac {∂u}{∂z}\) |
| C. | \(\frac {∂v}{∂x} = \frac {∂u}{∂z}\) |
| D. | \(\frac {∂v}{∂x} = \frac {∂u}{∂y}\) |
| Answer» D. \(\frac {∂v}{∂x} = \frac {∂u}{∂y}\) | |
| 5. |
According to Euler’s equation, what happens to the velocity of the inviscid flow if the pressure increases? |
| A. | No change |
| B. | Increases |
| C. | Decreases |
| D. | Becomes zero |
| Answer» D. Becomes zero | |
| 6. |
The special form of Euler’s equation dp = – ρVdV is applicable for rotational flow. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of these scenarios will lead to formation of vorticity? |
| A. | Flow behind curved shock wave |
| B. | Flow over a sharp wedge |
| C. | Two – dimensional nozzle flow |
| D. | Flow over a slender body |
| Answer» B. Flow over a sharp wedge | |
| 8. |
What is the value of vorticity for a irrotational flow? |
| A. | ω |
| B. | 2ω |
| C. | Zero |
| D. | Infinite |
| Answer» C. Zero | |
| 9. |
Vorticity is thrice as much as the angular velocity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Which of these equations represent vorticity? |
| A. | ∇.V |
| B. | ∇ × V |
| C. | ∇.V2 |
| D. | (∇.V) × V |
| Answer» C. ∇.V2 | |
| 11. |
What happens to the flow which passes through a curved shock wave? |
| A. | Creates vorticity downstream |
| B. | Creates vorticity upstream |
| C. | Flow passes by undisturbed |
| D. | Flow moves parallel to the curves shock wave |
| Answer» B. Creates vorticity upstream | |