Explore topic-wise MCQs in Aerodynamics Questions and Answers.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following gives a better approximate distribution of drag over thin airfoils?

A. The given percentages are for skin- friction drag and pressure drag respectively.
B. 85, 15
C. 50, 50
D. 64, 35
E. Inadequate data
Answer» B. 85, 15
Discussion
2.

When the free-stream velocity is made one-third, the transition point moves downstream.

A. The given statement is true or false?
B. True
C. False
Answer» B. True
Discussion
3.

The skin-friction coefficient for turbulent flow Cf is proportional to Rec. The proportionality constant is_____

A. 0.074
B. 0.64
C. 0.33
D. 1.328
Answer» B. 0.64
Discussion
4.

The boundary layer thickness for turbulent flow at a distance x with Reynolds number Rex is δ. Which is____

A. Directly proportional to \(\sqrt[5]{x}\)
B. Inversely proportional to \(\sqrt[5]{Re_x}\)
C. Directly proportional to Rex
D. Inversely proportional to x
Answer» C. Directly proportional to Rex
Discussion
5.

For a Reynolds number Rec=10×105 and chord length 1m, what is the turbulent boundary layer thickness at the trailing edge (in cm)?

A. 0.0216
B. 0.037
C. 2.16
D. 0.37
Answer» D. 0.37
Discussion
6.

The skin-friction drag coefficient for turbulent flow on the bottom surface of an airfoil, with chord length being 1m is _____ (Reynolds number at the trailing edge Rec=32×105)

A. 0.074
B. 0.0037
C. 0.027
D. 0.0074
Answer» C. 0.027
Discussion