# Mcq on drag and lift

## The Fluid mechanics is most important subject in the Competitive exams, so let's learn about Concept of Mcq on drag and lift helps to modernization.So keeping these things in mind, Lets understand the topic of Mcq on drag and lift. (adsbygoogle = window.adsbygoogle || []).push({}); Objective questions MCQ on drag and lift:- Mcq on drag and lift

## Mcq on forces on submerged bodies is as follows:-

1. The skin friction acting on the component of the...
A. Profile drag
C. Vane angles
D. Parallel movement

2. The skin friction acting on the component of the profile drag.
A. True
B. False

3. Sugar solution is example of …
A. Newtonian fluid
B. Non Newtonian fluid
C. Dilatants fluid
D. Pseudo plastic fluid

4. The large Cross sectional bodies having....
A. lower drag
B. Higher drag
C. Minimum drag
D. Maximum drag

5. Pressure drag is also known as form drag.
A.True
B. False

6. The coefficient of drag is denoted by symbol...
a) Cd
b) Bc
c) Dc
d) Tc

7. Blood  is example of …
A. Newtonian fluid
B. Non Newtonian fluid
C. Dilatants fluid
D. Pseudo plastic fluid

8. The drag coefficient has no dimensions.
A. True
B. False

9. The coefficient of drag is directly proportional to.....
a) Drag force
b) Mass density
c) Area
d) Flow speed

10. The specific weigh of sea water is…… than that of pure water.
A. Same as
B. Less than
C. More than
D. Cant say

11. The Drag coefficient is used to quantify the resistance of the object in the fluid environment.
A. True
B. False

11. If the friction is neglected,
then the Vr1= Vr2.
Vr= Relative velocity
A. True
B. False

12. The force per unit length is called as...
A. Compressibility
B. Surface tension
C. Capillarity
D. Viscosity

13. The force of Drag is directly proportional to the density of the fluids.
A. True
B. False

13. Drag force can not be exist between two layers of liquid.
a) True
b) False

14. The viscosity of water is higher than the mercury.
A. True
B. False

15. Drag coefficient is ......... functions
a) Mach number
b) Froude’s number
c) Laminar flow
d) Reynolds number

16. The viscosity of water is ……. Than the mercury.
A. Higher
B. Lower
C. Constant
D. None of the above

17. The force of Drag is changes with the change in....
a) Density of fluid
b) Mass density
c) Area
d) Flow speed

18. To achieve low drag coefficient, in streamline body the boundary layer must be....
a) Flow over the body
b) Be attached to the body
c) Move away from the body
d) Move parallel to the body

19. To go from laminar flow to turbulent flow is possible when the...
a) Reynolds number increases
b) Reynolds number decreases
c) Reynolds number is the same
d) Froude’s number increases

20. The unit of surface tension is…..
A. N/m
B. N/m2
C. N/m3
D. N-m

21. Increase in flow velocity, the Reynolds number will be. ...
a) Increases
b) Decreases
c) Same
d) Independent

22. The mercury does not wet the glass this property of liquid called as….
A  Compressibility
B. Surface tension
C. Capillarity
D. Viscosity

23. The decrease in the viscosity, so the value of Reynolds number will be . ..
a) Increases
b) Decreases
c) Same
d) Independent

24. The Reynolds number will increase when flow velocity is increases.
A. True
B. False

25. The sum of skin friction drag and pressure drag is called as profile drag.
A. True
B. False

26. The value of coefficient of drag of Disk is....
A. 1.17
B. 1.20
C. 1.5
D. 1.45

27. What is the unit of the drag coefficient...
a) N/sec
b) m/sec
c) kg/N
D. Dimensionless quantity

28. The value of coefficient of drag of Ring is....
A. 1.17
B. 1.20
C. 1.5
D. 1.45

29. Falling water drop becomes sphere is due to property of…
A. Compressibility of water
B. Surface tension of water
C. Capillarity of water
D. Viscosity of water

30. The lift force occurs only when the axis of body is incline to the direction of the flow.
A. True
B. False

31. Drag is a function of speed.
A. True
B. False

32. The drag force is a function of....
A. Speed of object
B. Fluid density
C. Projected area
D. All of the above

33. The lift force of girls normal to the direction of relative motion.
A. True
B. False

Here we concluding, If you have any queries about the topic of Mcq on drag and lift, then feel free to comment below.

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