MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
As a result of chemically reacting gas, which of these features differ compared to the ideal gas?? |
| A. | Pitching moment coefficient |
| B. | Temperature |
| C. | Drag |
| D. | Lift |
| Answer» B. Temperature | |
| 2. |
Which of these methods is not a local inclination method for computing pressure distribution? |
| A. | Newtonian theory |
| B. | Tangent wedge theory |
| C. | Tangent cone theory |
| D. | Oblique shock method |
| Answer» E. | |
| 3. |
Newton’s theory gives much more accurate results for 2 – dimensional shapes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
What is the pressure exerted by the incoming stream of particles on an inclined flat plate based on Newton’s theory? |
| A. | \(\frac {F}{A}\) = ρV\(_∞^2\)sin2θ |
| B. | \(\frac {F}{A}\) = ρV∞sin2θ |
| C. | \(\frac {F}{A}\) = ρV\(_∞^2\)cos2θ |
| D. | \(\frac {F}{A}\) = ρV\(_∞^2\)sinθ |
| Answer» B. \(\frac {F}{A}\) = ρV∞sin2θ | |
| 5. |
Coefficient of drag over a sphere at hypersonic speed is dependent on the Mach number. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
What is the formula for coefficient of drag over a circular cylinder at hypersonic speed? |
| A. | cd = \(\frac {D}{q_∞ S}\) |
| B. | cd = \(\frac {D}{2q_∞ S}\) |
| C. | cd = \(\frac {2D}{q_∞ S}\) |
| D. | cd = Dq∞S |
| Answer» B. cd = \(\frac {D}{2q_∞ S}\) | |
| 7. |
At what angle does the coefficient of lift over a flat plate become maximum? |
| A. | 66.6 deg |
| B. | 54.7 deg |
| C. | 33.3 deg |
| D. | 90 deg |
| Answer» C. 33.3 deg | |
| 8. |
According to Newton’s theory, what happens to the lift to drag value with decreasing angle of attack of a flat plate? |
| A. | Remains same |
| B. | Increase monotonically |
| C. | Decreases parabolically |
| D. | Becomes zero with maximum angle of attack |
| Answer» C. Decreases parabolically | |
| 9. |
According to the Newtonian model for fluid flow, what is the coefficient of pressure at the rear of the surface while free stream flows horizontally towards it? |
| A. | One |
| B. | Zero |
| C. | Infinity |
| D. | 0.5 |
| Answer» C. Infinity | |
| 10. |
According to the Newtonian theory, which of these is preserved after the impact of the incident particles? |
| A. | Normal momentum |
| B. | Tangential momentum |
| C. | Normal velocity |
| D. | Tangential velocity |
| Answer» C. Normal velocity | |
| 11. |
What is the relation according to the Newton’s theory for hypersonic problems? |
| A. | Cp = 2sinθ |
| B. | Cp = 2sin2θ |
| C. | Cp = cosθ |
| D. | Cp = 2sinθcosθ |
| Answer» C. Cp = cosθ | |
| 12. |
Newton theory is applicable for which of these flows? |
| A. | Subsonic flow |
| B. | Supersonic flow |
| C. | Transonic flow |
| D. | Hypersonic flow |
| Answer» E. | |
| 13. |
What is a Newtonian theory used for? |
| A. | Finding lift coefficient over blunt body |
| B. | Finding pressure coefficient over blunt body |
| C. | Finding drag coefficient over sharp wedge |
| D. | Finding pressure coefficient over cone |
| Answer» C. Finding drag coefficient over sharp wedge | |