MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
What will be the pressure-height ratio of air at an altitude of 9144m? (L0=-0.0065 K/m, T0=288.15K, P0=101325 N/m2) |
| A. | 0.297 |
| B. | 0.596 |
| C. | 0.359 |
| D. | 0.458 |
| Answer» B. 0.596 | |
| 2. |
What is relative pressure at 1600ft? (P1600=95602 N/m2) |
| A. | 0.9453 |
| B. | 0.9858 |
| C. | 0.9435 |
| D. | 0.9595 |
| Answer» D. 0.9595 | |
| 3. |
What is relative temperature at 1600ft? (T1600=284.98 K) |
| A. | 0.989 |
| B. | 0.838 |
| C. | 0.877 |
| D. | 0.999 |
| Answer» B. 0.838 | |
| 4. |
What is relative temperature at 241.45K? |
| A. | 1 |
| B. | 0.8379 |
| C. | 0.8774 |
| D. | 0.8756 |
| Answer» C. 0.8774 | |
| 5. |
What is relative pressure at 101325 N/m2? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 6. |
Any atmosphere that does not conform to the ISA profile is referred to as an off-standard atmosphere. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
The pressure-height relationship in troposphere is given by _______ |
| A. | ( frac{p}{p_0} )=[1 + ( frac{L_0}{T_0} )H]<sup> ( frac{-g_0}{RL_0} )</sup> |
| B. | ( frac{p}{p_0} )=[1 + ( frac{L_0}{T_0} )H]<sup> ( frac{-T_0}{RL_0} )</sup> |
| C. | ( frac{p}{p_0} )=[1 + ( frac{g_0}{T_0} )H]<sup> ( frac{-g_0}{RL_0} )</sup> |
| D. | ( frac{p}{p_0} )=[1 + ( frac{L_0}{g_0} )H]<sup> ( frac{-g_0}{RL_0} )</sup> |
| Answer» B. ( frac{p}{p_0} )=[1 + ( frac{L_0}{T_0} )H]<sup> ( frac{-T_0}{RL_0} )</sup> | |
| 8. |
The difference between true height and geopotential height is relatively small. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
What is the pressure difference across a cylinder which consists of water and has a height difference of 20m? |
| A. | -196.2 kN/m<sup>2</sup> |
| B. | -1.962 10<sup>-5</sup> bar |
| C. | -196.2 kN/m<sup>2</sup> |
| D. | -1.962 10<sup>-5</sup> bar |
| Answer» B. -1.962 10<sup>-5</sup> bar | |
| 10. |
What is the hydrostatic equation? |
| A. | P=- g h |
| B. | P=- gh |
| C. | P=- g h |
| D. | P= g h |
| Answer» B. P=- gh | |
| 11. |
What is true height? |
| A. | The vertical geometrical distance between an object and a datum level |
| B. | The vertical geometrical distance between a certain height and a datum level |
| C. | The horizontal geometrical distance between an object and a datum level |
| D. | The horizontal geometrical distance between a certain height and a datum level |
| Answer» B. The vertical geometrical distance between a certain height and a datum level | |
| 12. |
What is lapse rate? |
| A. | Change of temperature with respect to altitude |
| B. | Change of temperature with respect to pressure |
| C. | Change of pressure with respect to altitude |
| D. | Change of temperature with respect to density |
| Answer» B. Change of temperature with respect to pressure | |
| 13. |
The temperature-height profile is given by ___________ |
| A. | T=Ti+Li (H-Hi) |
| B. | T=Ti+Li (H+Hi) |
| C. | T=Ti-Li (H-Hi) |
| D. | T=Ti-Li (H+Hi) |
| Answer» B. T=Ti+Li (H+Hi) | |
| 14. |
According to ISA atmospheric model what is the value of datum atmospheric air density kg/m3? |
| A. | 1.225 |
| B. | 12.225 |
| C. | 1.23 |
| D. | 1.000 |
| Answer» B. 12.225 | |
| 15. |
International Standard Atmosphere is based on the assumption that air is a perfect gas and obeys gas law. |
| A. | True |
| B. | False |
| Answer» B. False | |