Explore topic-wise MCQs in Aircraft Performance.

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. p<sub>p</sub>-p=p<sub>0</sub> ( Bigg[ Big {1+ frac{ gamma-1}{2} left( frac{V_c}{a_0} right)^2 Big }^{ frac{ gamma}{ gamma-1}}-1 Bigg] )
B. p<sub>p</sub>-p=p<sub>0</sub> ( Bigg[ Big {1+ frac{ gamma+1}{2} left( frac{V_c}{a_0} right)^2 Big }^{ frac{ gamma}{ gamma-1}}-1 Bigg] )
C. p-p<sub>0</sub>=p<sub>0</sub> ( Bigg[ Big {1+ frac{ gamma-1}{2} left( frac{V_c}{a_0} right)^2 Big }^{ frac{ gamma}{ gamma-1}}-1 Bigg] )
D. p<sub>p</sub>-p=p<sub>0</sub> ( Bigg[ Big {1+ frac{ gamma-1}{2} left( frac{V_c}{a_0} right)^2 Big }^{ frac{ gamma}{ gamma+1}}-1 Bigg] )
Answer» B. p<sub>p</sub>-p=p<sub>0</sub> ( Bigg[ Big {1+ frac{ gamma+1}{2} left( frac{V_c}{a_0} right)^2 Big }^{ frac{ gamma}{ gamma-1}}-1 Bigg] )
Discussion
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
Discussion
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
Discussion
4.

What is the relation between equivalent air speed and pressure ratio?

A. V<sub>e</sub>=V ( sqrt{ sigma} )
B. V<sub>e</sub>= ( frac{V}{ sqrt{ sigma}} )
C. V<sub>e</sub>=V <sup>2</sup>
D. V<sub>e</sub>=V <sup>-2</sup>
Answer» B. V<sub>e</sub>= ( frac{V}{ sqrt{ sigma}} )
Discussion
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}} )
Discussion
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
Discussion
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} )
Discussion
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
Discussion
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
Discussion
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} )
Discussion
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
Discussion
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} )
Discussion