MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Aircraft Performance knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Below the mach number 0.5 the flow is considered as incompressible flow. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
In transonic region the mach number affects the aerodynamic characteristics. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the critical mach number for most subsonic aircraft? |
| A. | Around 0.8 |
| B. | Around 2 |
| C. | Around 1 |
| D. | Around 1.5 |
| Answer» B. Around 2 | |
| 4. |
What is the range of mach number for a conventional aircraft? |
| A. | 0 to 3.2 |
| B. | 0 to 2.2 |
| C. | 0 to 4.2 |
| D. | 0 to 1.2 |
| Answer» C. 0 to 4.2 | |
| 5. |
The range of Re in the typical flight is ___________ |
| A. | 10<sup>6</sup> to 10<sup>9</sup> |
| B. | 10<sup>5</sup> to 10<sup>9</sup> |
| C. | 10<sup>6</sup> to 10<sup>8</sup> |
| D. | 10<sup>6</sup> to 10<sup>10</sup> |
| Answer» B. 10<sup>5</sup> to 10<sup>9</sup> | |
| 6. |
Which of the following is the correct formula for reynolds number? |
| A. | R<sub>e</sub>= ( frac{ rho Vl}{ mu} ) |
| B. | R<sub>e</sub>= ( frac{PVl}{ mu} ) |
| C. | R<sub>e</sub>= ( frac{ rho mu l}{V} ) |
| D. | R<sub>e</sub>= ( frac{ rho Vl}{P} ) |
| Answer» B. R<sub>e</sub>= ( frac{PVl}{ mu} ) | |
| 7. |
Which of the following are the forces that are concerned with the performance of an aircraft? |
| A. | Lift, drag, weight |
| B. | Lift, drag, side force |
| C. | Lift, drag |
| D. | Lift, drag, weight, side force |
| Answer» C. Lift, drag | |
| 8. |
In which of the following terms the forces of aircraft must be considered? |
| A. | Aircraft weight, flight mach number, altitude |
| B. | Aircraft weight, airspeed, altitude, temperature |
| C. | Aircraft weight, flight mach number, temperature |
| D. | Aircraft weight, airspeed, altitude |
| Answer» B. Aircraft weight, airspeed, altitude, temperature | |
| 9. |
The aerodynamic forces arise from the relative motion between the aircraft and the air mass in which it is flying. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Gravitational force is the product of mass of the aircraft and its acceleration. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Inertial forces from the mass of the aircraft and its acceleration. |
| A. | True |
| B. | False |
| Answer» B. False | |