MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The linearized pressure distribution for Mach number greater than 5 matches the coefficient of pressure derived from the exact shock theory. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of these assumptions is not made while formulating the linearized supersonic flow? |
| A. | Thin sharp edged airfoil |
| B. | Large camber |
| C. | Two – dimensional flow |
| D. | Small angle of attack |
| Answer» C. Two – dimensional flow | |
| 3. |
For a thin airfoil kept at a supersonic flow of Mach number 3 at an inclination of 2 degrees, what is the coefficient of pressure? |
| A. | 0.47 |
| B. | 1.51 |
| C. | 1.78 |
| D. | 2.83 |
| Answer» E. | |
| 4. |
For a biconvex airfoil, what sign convention is used for the value of θ while computing the coefficient of pressure? |
| A. | Positive for forward and negative for rearward surface |
| B. | Positive for upper and negative for lower surface |
| C. | Positive for rearward and negative for forward surface |
| D. | Positive for lower and negative for upper surface |
| Answer» B. Positive for upper and negative for lower surface | |
| 5. |
Linearized equations give the exact results as obtained by the non – linear equations. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
What is the coefficient of lift according to the linearized theory over a flat plate kept at an inclination of 4 degrees having freestream Mach number of 3? |
| A. | 0.0987 |
| B. | 1.231 |
| C. | 0.857 |
| D. | 1.362 |
| Answer» B. 1.231 | |
| 7. |
For an airfoil kept at supersonic flow, how does the coefficient of pressure vary with an increase in Mach number? |
| A. | Increases |
| B. | Decreases |
| C. | Remains same |
| D. | First increases, then decreases |
| Answer» C. Remains same | |
| 8. |
The linearized perturbation velocity potential equation for supersonic flow takes form of which of these partial differential equations? |
| A. | Elliptic |
| B. | Hyperbolic |
| C. | Parabolic |
| D. | Linear |
| Answer» C. Parabolic | |
| 9. |
Which of these is the linearized perturbation velocity potential equation over a thin airfoil in a supersonic flow? |
| A. | λ2(ϕxx + ϕyy) = 0 |
| B. | ϕxx + ϕyy = 0 |
| C. | λ2ϕxx + ϕyy = 0 |
| D. | λ2ϕxx + ϕxy = 0 |
| Answer» D. λ2ϕxx + ϕxy = 0 | |