Aircraft Performance Questions and Answers – Minimum Drag Speed

This set of Aircraft Performance Multiple Choice Questions & Answers (MCQs) focuses on “Minimum Drag Speed”

1. What is the correct expression for induced drag?
a) \(\frac{ZW^2}{V^2_e}\)
b) YV_e²
c) \(\frac{ZW^2}{V_e}\)
d) YV_e
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2. What is the correct expression for pressure drag?
a) \(\frac{ZW^2}{V^2_e}\)
b) YV_e²
c) \(\frac{ZW^2}{V_e}\)
d) YV_e
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3. Which of the following is correct equation?
a) D=YV_e^e+\(\frac{ZW^2}{V^2_e}\)
b) C_D=C_Dz-KC_L²
c) D=D_z-D_i
d) V_emd=\(\sqrt[3]{\frac{ZW^2}{Y}}\)
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4. Which of the following is the correct equation for minimum speed drag?
a) V_emd=\(\sqrt[3]{\frac{ZW^2}{Y}}\)
b) V_emd=\(\sqrt[4]{\frac{ZW^2}{Y}}\)
c) V_emd=\(\sqrt[4]{\frac{ZW^2}{Y^2}}\)
d) V_emd=\(\sqrt[3]{\frac{ZW^2}{Y^2}}\)
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5. The minimum drag speed determines the best operating speeds of aircraft with thrust producing engines.
a) True
b) False
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6. The lift-dependent drag is reduced with the reduction in total drag.
a) True
b) False
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7. The total drag is the sum of pressure drag and induced drag.
a) True
b) False
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8. What is overall drag force?
a) The sum of drag force, zero-lift drag, lift-dependent drag and volume dependent wave drag
b) The sum of lift-dependent drag and volume dependent wave drag
c) The sum of drag force, lift-dependent drag and volume dependent wave drag
d) The sum of drag force, zero-lift drag and lift-dependent drag
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9. The drag polar curve is parabolic in shape for subsonic performance aircrafts.
a) True
b) False
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10. Which of the following is the correct equation for the Prandtl-Glauert factor?
a) β=\(\sqrt{1-M^2}\)
b) β=\(\sqrt{1-M}\)
c) β=\(\sqrt{M^2-1}\)
d) β=\(\sqrt{1+M^2}\)
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Sanfoundry Global Education & Learning Series – Aircraft Performance.

To practice all areas of Aircraft Performance, here is complete set of 1000+ Multiple Choice Questions and Answers.