Pressure Coefficient MCQs – Physics

By: Prof. Dr. Fazal Rehman | Last updated: May 20, 2025

1. : For compressible flow, the value of Cp is given as ______.
(A) Cp = P2 – P1
(B) Cp = 0
(C) Cp = (P2 – P1) / q
(D) Cp = 0.5 * ρ * V1²

2. : What is Cd vs C1 called?
(A) Drag polar
(B) Parasitic drag
(C) Total drag
(D) No significance

3. : What is the Coefficient of Pressure?
(A) Dimensional quantity
(B) Dimensionless quantity
(C) Negligible value
(D) Cannot be determined

4. : Cp is expressed only in terms of ____ for the incompressible flow.
(A) Pressure
(B) Density
(C) Temperature
(D) Velocity

5. : At ____ the cp is given the highest value.
(A) Endpoints
(B) Stagnation point
(C) Everywhere in the flow field
(D) At boundaries

6. : We assume that Ram is working on an experiment. He has a beaker in which the fluid is moving at a very high velocity. He is wanting to calculate the relative pressure at every point of the flow. What will help him to do so?
(A) Coefficient of lift
(B) Coefficient of pressure
(C) Drag polar
(D) Velocity

7. : The gliders generally have the Cp as _____.
(A) 1
(B) -1
(C) 0
(D) Infinity

8. : What is the example of a hydrostatic manometer?
(A) Pressure gauge
(B) Piston type gauge
(C) Mercury column manometer
(D) Spring manometer

9. : What is the value of Cp at stagnation point for compressible flow?
(A) 0
(B) Negative
(C) Infinity
(D) Greater than 1

10. : How is aspect ratio (AR) given?
(A) b/s
(B) s/b
(C) b²/s
(D) s³/b

11. : Altitude is _____ proportional to the pressure.
(A) Inversely
(B) Directly
(C) No relation
(D) Equal

12. : The altitude and the pressure are _____.
(A) Directly proportional to each other
(B) Inversely proportional to each other
(C) Equal
(D) Independent of each other

13. : The local pressure is given as ___ if the value of Cp = 1.
(A) P = Pfreestream + q
(B) P = 0.5 * ρ * V1²
(C) P = Pfreestream
(D) P = 0

14. : What is the shape of the wing called?
(A) Geometry
(B) Wing
(C) Airfoil
(D) Wing box