MCQOPTIONS
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MCQOPTIONS
This section includes 10 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 temperature of aircraft flying in air where the stagnation temperature is 288.15K and mach number is 1? |
| A. | 250.15K |
| B. | 240.125K |
| C. | 300K |
| D. | 270.18K |
| Answer» C. 300K | |
| 2. |
Scale height is the description of how the altitude changes in the atmosphere. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the relationship between temperature and mach number? |
| A. | T<sub>0</sub>=T ( Big[1+ frac{ gamma-1}{2}M^2 Big] ) |
| B. | T<sub>0</sub>=T ( Big[1+ frac{ gamma+1}{2}M^2 Big] ) |
| C. | T<sub>0</sub>=T ( Big[1- frac{ gamma-1}{2}M^2 Big] ) |
| D. | T<sub>0</sub>=T ( Big[1- frac{ gamma+1}{2}M^2 Big] ) |
| Answer» B. T<sub>0</sub>=T ( Big[1+ frac{ gamma+1}{2}M^2 Big] ) | |
| 4. |
Mach number of an aircraft is affected by the shock waves created at the vortex of the aircraft. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What is the mach number of aircraft flying in air where the pressure ratio is 1.893? |
| A. | 2 |
| B. | 1 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 6. |
What is the relation between mach number and pressure ratio? |
| A. | ( frac{p1}{p2}= Big {1+ frac{ gamma-1}{2}(M)^2 Big }^ frac{ gamma}{ gamma-1} ) |
| B. | ( frac{p2}{p1}= Big {1+ frac{ gamma-1}{2}(M)^2 Big }^ frac{ gamma}{ gamma-1} ) |
| C. | ( frac{p1}{p2}= Big {1+ frac{ gamma+1}{2}(M)^2 Big }^ frac{ gamma}{ gamma-1} ) |
| D. | ( frac{p1}{p2}= Big {1- frac{ gamma+1}{2}(M)^2 Big }^ frac{ gamma}{ gamma-1} ) |
| Answer» B. ( frac{p2}{p1}= Big {1+ frac{ gamma-1}{2}(M)^2 Big }^ frac{ gamma}{ gamma-1} ) | |
| 7. |
What is the mach number of an aircraft flying in air at a pressure of 101306N/m2 and velocity 556m/s? |
| A. | 1.634 |
| B. | 2.145 |
| C. | 0.125 |
| D. | 1.225 |
| Answer» B. 2.145 | |
| 8. |
Which of the following is the correct relation for mach number? |
| A. | M=V ( sqrt{ frac{ rho}{ gamma P}} ) |
| B. | V= ( frac{a}{M} ) |
| C. | M=V ( sqrt{ frac{P}{ gamma rho}} ) |
| D. | M=V ( sqrt{ frac{ gamma p}{ rho}} ) |
| Answer» B. V= ( frac{a}{M} ) | |
| 9. |
What is the mach number of an aircraft flying with a speed of 450m/s at a temperature of 290 K? |
| A. | 1.318 |
| B. | 2.045 |
| C. | 3.214 |
| D. | 0.235 |
| Answer» B. 2.045 | |
| 10. |
What is the formula for mach number? |
| A. | M= ( frac{V}{a} ) |
| B. | M= ( frac{a}{V} ) |
| C. | V= ( frac{a}{M} ) |
| D. | a= ( frac{M}{V} ) |
| Answer» B. M= ( frac{a}{V} ) | |