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Airfoil Selection - Aircraft Design MCQ Questions

Airfoil Selection MCQs : Here you will find MCQ Questions related to "Airfoil Selection" in Aircraft Design. These Airfoil Selection MCQ Questions Will help you to improve your Aircraft Design knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations

Question 1

vehicle size was selected so that tunnel blockage did not exceed?

A. 0.02
B. 0.03
C. 0.04
D. 0.05

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Question 2

Model span was kept within ________ of test section width

A. 0.1
B. 0.2
C. 0.3
D. 0.4

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Question 3

For trim flight, pitching moment coefficient at zero angle of attack, Cm0, must be?

A. Negative
B. 0
C. Positive
D. None of the above

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Question 4

The cross-sectional shape of wing is called _____

A. camber
B. circle
C. airfoil
D. chord

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Question 5

The model was fabricated using EPP foam with density __________ using CNC machine.

A. 30 g/L
B. 40 g/L
C. 50 g/L
D. 50 g/L

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Question 6

If an airfoil is operating at Mach 1.1, then it is working in _____

A. transonic range
B. supersonic range
C. subsonic range
D. hypersonic range

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Question 7

Pressure on the upper surface is _________

A. higher than lower surface
B. lower than lower surface
C. always 30.25 times lower surface
D. always same

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Question 8

Which of the following is correct?

A. Lift produced by an airfoil is always equal to weight
B. Drag by sphere is less than that of produced by an airfoil for similar conditions
C. Drag by sphere is more than the drag produced by an airfoil for similar conditions
D. Drag by sphere is equal to the drag produced by an airfoil for similar conditions

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Question 9

Which of the following is not an application of an airfoil?

A. To provide lift
B. To provide lift co-efficient
C. To provide streamlined flow
D. To provide thrust for acceleration

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Question 10

What do you mean by double cambered airfoil?

A. Airfoil with flat lower surface
B. Airfoil with curved upper and lower surface
C. Airfoil with flat upper and lower surface
D. Only upper surface is curved

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