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. |
For a finite wing, the local relative wind differs by the free-stream velocity by some angle. This angle is called as ____ |
| A. | Angle of attack |
| B. | Twist angle |
| C. | Relative angle of attack |
| D. | Induced angle of attack |
| Answer» E. | |
| 2. |
The angle between the chord line and the direction of free-stream velocity is called the angle of attack. |
| A. | True for airfoil only |
| B. | True for wing only |
| C. | True for airfoil and partially true for wings |
| D. | False |
| Answer» D. False | |
| 3. |
The downward velocity induced by the trailing vortex in the vicinity of the wing-tips is called as _____ |
| A. | Downwash |
| B. | Local relative velocity |
| C. | Effective velocity |
| D. | Wing velocity |
| Answer» B. Local relative velocity | |
| 4. |
The trailing vortex is formed at each wing-tip as there is a circulatory motion established by the____ |
| A. | Leaking flow at the wing- tips |
| B. | Flowing wind |
| C. | Viscosity |
| D. | Air tornadoes |
| Answer» B. Flowing wind | |
| 5. |
Which of the following is incorrect for a finite wing? |
| A. | Streamlines on the top surface bend towards the root |
| B. | Span-wise flow at the bottom surface is towards the tip |
| C. | Higher pressure region exists at the top surface |
| D. | Streamlines on the bottom surface bend towards the tip |
| Answer» D. Streamlines on the bottom surface bend towards the tip | |
| 6. |
The span-wise component of flow over the top surface of the wing flows______ |
| A. | From wing-tip to root |
| B. | From root to wing-tip |
| C. | Along the free-stream direction |
| D. | Perpendicular to the wing upwards |
| Answer» B. From root to wing-tip | |
| 7. |
The 3D flow characteristic attributed to the wings is a by-product of_____ |
| A. | Pressure imbalance over top and bottom surfaces of the wing |
| B. | Pressure imbalance between leading and trailing edge of the airfoil |
| C. | Thickness of the wing |
| D. | Extra lift produced |
| Answer» B. Pressure imbalance between leading and trailing edge of the airfoil | |
| 8. |
Which is the incorrect statement with regards to the flow over an airfoil and a wing? |
| A. | Flow over airfoil is 2D |
| B. | Flow over wing is 3D |
| C. | Airfoils have a component of flow along span |
| D. | Wings have a component of flow along span |
| Answer» D. Wings have a component of flow along span | |
| 9. |
The airfoil and the wing behave exactly the same way in terms of aerodynamic properties. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
The airfoil data can also be called as_____ |
| A. | Finite wing data |
| B. | Wing data |
| C. | Flight data |
| D. | Infinite wing data |
| Answer» E. | |