MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
Which of the following is the full-law calibration equation? |
| A. | pp-p=p0\(\Bigg[\Big\{1+\frac{\gamma-1}{2}\left(\frac{V_c}{a_0}\right)^2\Big\}^{\frac{\gamma}{\gamma-1}}-1\Bigg]\) |
| B. | pp-p=p0\(\Bigg[\Big\{1+\frac{\gamma+1}{2}\left(\frac{V_c}{a_0}\right)^2\Big\}^{\frac{\gamma}{\gamma-1}}-1\Bigg]\) |
| C. | p-p0=p0\(\Bigg[\Big\{1+\frac{\gamma-1}{2}\left(\frac{V_c}{a_0}\right)^2\Big\}^{\frac{\gamma}{\gamma-1}}-1\Bigg]\) |
| D. | pp-p=p0\(\Bigg[\Big\{1+\frac{\gamma-1}{2}\left(\frac{V_c}{a_0}\right)^2\Big\}^{\frac{\gamma}{\gamma+1}}-1\Bigg]\) |
| Answer» B. pp-p=p0\(\Bigg[\Big\{1+\frac{\gamma+1}{2}\left(\frac{V_c}{a_0}\right)^2\Big\}^{\frac{\gamma}{\gamma-1}}-1\Bigg]\) | |
| 2. |
What is equivalent air speed? |
| A. | The calibrated air speed corrected for scale-altitude error |
| B. | The true air speed corrected for scale-altitude error |
| C. | The indicated air speed corrected for scale-altitude error |
| D. | The ground air speed corrected for scale-altitude error |
| Answer» B. The true air speed corrected for scale-altitude error | |
| 3. |
What is the equivalent air speed where velocity is 330m/s and pressure ratio is 8.447? |
| A. | 959.1m/s |
| B. | 1000m/s |
| C. | 981m/s |
| D. | 954m/s |
| Answer» B. 1000m/s | |
| 4. |
What is the relation between equivalent air speed and pressure ratio? |
| A. | Ve=V\(\sqrt{\sigma}\) |
| B. | Ve=\(\frac{V}{\sqrt{\sigma}}\) |
| C. | Ve=Vσ2 |
| D. | Ve=Vσ-2 |
| Answer» B. Ve=\(\frac{V}{\sqrt{\sigma}}\) | |
| 5. |
What is the formula for speed of sound in terms of pressure and density? |
| A. | a=\(\sqrt{\frac{\gamma P}{\rho}}\) |
| B. | a=\(\sqrt{\frac{\gamma\rho}{P}}\) |
| C. | a=\(\sqrt{\frac{\gamma RP}{\rho}}\) |
| D. | a=\(\sqrt{\frac{\gamma P}{\rho R}}\) |
| Answer» B. a=\(\sqrt{\frac{\gamma\rho}{P}}\) | |
| 6. |
What is the speed of sound where density and pressure are 1.225kg/m3 and 101306N/m2? |
| A. | 340.26m/s |
| B. | 330.26m/s |
| C. | 313 m/s |
| D. | 325 m/s |
| Answer» B. 330.26m/s | |
| 7. |
Which of the following is the correct isentropic relation between pressure and temperature? |
| A. | \(\frac{p_1}{p_2}=(\frac{T_2}{T_1})^\frac{\gamma}{1-\gamma}\) |
| B. | \(\frac{p_1}{p_2}=(\frac{T_2}{T_1})^\frac{\gamma-1}{\gamma}\) |
| C. | \(\frac{p_1}{p_2}=(\frac{T_2}{T_1})^\frac{\gamma+1}{\gamma}\) |
| D. | \(\frac{p_1}{p_2}=(\frac{T_2}{T_1})^\frac{\gamma}{\gamma-1}\) |
| Answer» B. \(\frac{p_1}{p_2}=(\frac{T_2}{T_1})^\frac{\gamma-1}{\gamma}\) | |
| 8. |
What is the pressure ratio of an aircraft moving in air at a velocity 500m/s and speed of sound is 244 m/s? |
| A. | 4.556 |
| B. | 3.327 |
| C. | 6.256 |
| D. | 2.565 |
| Answer» C. 6.256 | |
| 9. |
What is the pressure ratio of an aircraft moving in air at a mach number 1? |
| A. | 1.893 |
| B. | 1.558 |
| C. | 1.444 |
| D. | 1.555 |
| Answer» B. 1.558 | |
| 10. |
What is the relation between pressure and air speed in isentropic relations? |
| A. | \(\frac{p_1}{p_2}\)=\(\Big\{1+\frac{\gamma-1}{2}(\frac{V1}{a1})^2\Big\}^\frac{\gamma}{\gamma-1}\) |
| B. | \(\frac{p_1}{p_2}\)=\(\Big\{1+\frac{\gamma+1}{2}(\frac{V1}{a1})^2\Big\}^\frac{\gamma}{\gamma+1}\) |
| C. | \(\frac{p_1}{p_2}\)=\(\Big\{1+\frac{\gamma+1}{2}(\frac{V1}{a1})^2\Big\}^\frac{\gamma}{\gamma-1}\) |
| D. | \(\frac{p_1}{p_2}\)=\(\Big\{1+\frac{\gamma-1}{2}(\frac{V1}{a1})^2\Big\}^\frac{\gamma}{\gamma+1}\) |
| Answer» B. \(\frac{p_1}{p_2}\)=\(\Big\{1+\frac{\gamma+1}{2}(\frac{V1}{a1})^2\Big\}^\frac{\gamma}{\gamma+1}\) | |
| 11. |
What is the speed of sound in air at an altitude where temperature is 299K? |
| A. | 346.61K |
| B. | 343.61K |
| C. | 71.61 °C |
| D. | 70.61 °C |
| Answer» B. 343.61K | |
| 12. |
Which of the following is the correct formula for speed of sound? |
| A. | \(\sqrt{\gamma RT}\) |
| B. | \(\sqrt{pRT}\) |
| C. | \(\sqrt{\rho Rt}\) |
| D. | \(\sqrt{\gamma R0T}\) |
| Answer» B. \(\sqrt{pRT}\) | |