MCQOPTIONS
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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 happens to the linearized velocity potential equation for flow over high thickness – chord ratio? |
| A. | Becomes zero |
| B. | Becomes 1 |
| C. | Is invalid |
| D. | Becomes infinity |
| Answer» D. Becomes infinity | |
| 2. |
Which equation is satisfied when the Mach number approaches to zero in linearized velocity potential equation? |
| A. | Laplace equation |
| B. | Momentum equation |
| C. | Energy equation |
| D. | Euler’s equation |
| Answer» B. Momentum equation | |
| 3. |
Which of these is linearized velocity potential equation? |
| A. | (1 – M\(_∞^2\))ϕxx + ϕyy + ϕzz = 0 |
| B. | ϕxx + (1 – M\(_∞^2\))ϕyy + ϕzz = 0 |
| C. | ϕxx + ϕyy + (1 – M\(_∞^2\))ϕzz = 0 |
| D. | (1 – M\(_∞^2\))[ϕxx + ϕyy + ϕzz] = 0 |
| Answer» B. ϕxx + (1 – M\(_∞^2\))ϕyy + ϕzz = 0 | |
| 4. |
Which of these assumptions is invalid for the linearized velocity potential equation? |
| A. | \(\frac {u^{‘}}{V_∞}\) << 1 |
| B. | \(\frac {v^{‘}}{V_∞}\) << 1 |
| C. | \(\frac {w^{‘}}{V_∞}\) >> 1 |
| D. | \(\frac {w^{‘}}{V_∞}\) << 1 |
| Answer» D. \(\frac {w^{‘}}{V_∞}\) << 1 | |
| 5. |
Linearized velocity potential equation is applicable to hypersonic flow. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of these assumptions are not made while obtaining the linearized perturbation velocity potential equation? |
| A. | Small perturbations are there |
| B. | Transonic flow is excluded |
| C. | Hypersonic flow is excluded |
| D. | Subsonic flow is excluded |
| Answer» E. | |
| 7. |
Linearized perturbation velocity potential equation is applicable for transonic flow. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
In which equation is total velocity and it double derivative substituted to obtain the perturbation velocity potential equation? |
| A. | Momentum equation |
| B. | Velocity potential equation |
| C. | Perturbation equation |
| D. | Enthalpy equation |
| Answer» C. Perturbation equation | |
| 9. |
What is the velocity potential for a slender body in uniform flow with perturbations? |
| A. | Φ(x, y, z) = V∞ x + ϕ(x, y, z) |
| B. | Φ(x, y, z) = V∞ z + ϕ(x, y, z) |
| C. | Φ(x, y, z) = V∞ y + ϕ(x, y, z) |
| D. | ∇Φ = u‘i + v‘j + (V∞ + w‘)k |
| Answer» B. Φ(x, y, z) = V∞ z + ϕ(x, y, z) | |
| 10. |
What will be the x – component of velocity for a slender body which is immersed in uniform flow having perturbations? |
| A. | Vx = V∞ + u‘ |
| B. | Vx = V∞ + v‘ |
| C. | Vx = V∞ + w‘ |
| D. | Vx = V∞ |
| Answer» B. Vx = V∞ + v‘ | |