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.Objective questions MCQ on drag and lift:-
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| Mcq on drag and lift |
Mcq on forces on submerged bodies is as follows:-
A. Profile drag
B. Surface blade
C. Vane angles
D. Parallel movement
Answer:- A
2. The skin friction acting on the component of the profile drag.
A. True
B. False
Answer:- A
3. Sugar solution is example of …
A. Newtonian fluid
B. Non Newtonian fluid
C. Dilatants fluid
D. Pseudo plastic fluid
B. Non Newtonian fluid
C. Dilatants fluid
D. Pseudo plastic fluid
Answer:- C
A. lower drag
B. Higher drag
C. Minimum drag
D. Maximum drag
Answer:- B
5. Pressure drag is also known as form drag.
A.True
B. False
Answer:- A
6. The coefficient of drag is denoted by symbol...
a) Cdb) Bc
c) Dc
d) Tc
Answer :- A
7. Blood is example of …
A. Newtonian fluid B. Non Newtonian fluid
C. Dilatants fluid
D. Pseudo plastic fluid
Answer:- D
8. The drag coefficient has no dimensions.
A. True
B. False
Answer:- A
9. The coefficient of drag is directly proportional to.....
a) Drag forceb) Mass density
c) Area
d) Flow speed
Answer:- A
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
Answer:- C
11. The Drag coefficient is used to quantify the resistance of the object in the fluid environment.
A. True
B. False
Answer:- A
11. If the friction is neglected,
then the Vr1= Vr2.
Vr= Relative velocity
A. True
B. False
Answer:- A
12. The force per unit length is called as...
A. CompressibilityB. Surface tension
C. Capillarity
D. Viscosity
Answer:- B
13. The force of Drag is directly proportional to the density of the fluids.
A. True
B. False
Answer:- A
13. Drag force can not be exist between two layers of liquid.
a) Trueb) False
Answer:- B
14. The viscosity of water is higher than the mercury.
A. TrueB. False
Answer:- A
15. Drag coefficient is ......... functions
a) Mach numberb) Froude’s number
c) Laminar flow
d) Reynolds number
Answer:- A
16. The viscosity of water is ……. Than the mercury.
A. Higher B. Lower
C. Constant
D. None of the above
Answer:- A
17. The force of Drag is changes with the change in....
a) Density of fluidb) Mass density
c) Area
d) Flow speed
Answer:- A
18. To achieve low drag coefficient, in streamline body the boundary layer must be....
a) Flow over the bodyb) Be attached to the body
c) Move away from the body
d) Move parallel to the body
Answer:- B
19. To go from laminar flow to turbulent flow is possible when the...
a) Reynolds number increasesb) Reynolds number decreases
c) Reynolds number is the same
d) Froude’s number increases
Answer:- A
20. The unit of surface tension is…..
A. N/mB. N/m2
C. N/m3
D. N-m
Answer:- D
21. Increase in flow velocity, the Reynolds number will be. ...
a) Increasesb) Decreases
c) Same
d) Independent
Answer:- A
22. The mercury does not wet the glass this property of liquid called as….
A CompressibilityB. Surface tension
C. Capillarity
D. Viscosity
Answer:- B
23. The decrease in the viscosity, so the value of Reynolds number will be . ..
a) Increasesb) Decreases
c) Same
d) Independent
Answer:- A
24. The Reynolds number will increase when flow velocity is increases.
A. True
B. False
Answer:- A
25. The sum of skin friction drag and pressure drag is called as profile drag.
A. True
B. False
Answer:- A
26. The value of coefficient of drag of Disk is....
A. 1.17
B. 1.20
C. 1.5
D. 1.45
Answer:- A
27. What is the unit of the drag coefficient...
D. Dimensionless quantity
Answer:- D
28. The value of coefficient of drag of Ring is....
A. 1.17
B. 1.20
C. 1.5
D. 1.45
Answer:- B
29. Falling water drop becomes sphere is due to property of…
A. Compressibility of waterB. Surface tension of water
C. Capillarity of water
D. Viscosity of water
Answer:- B
30. The lift force occurs only when the axis of body is incline to the direction of the flow.
A. True
B. False
Answer:- A
31. Drag is a function of speed.
A. True
B. False
Answer:- A
32. The drag force is a function of....
A. Speed of object
B. Fluid density
C. Projected area
D. All of the above
Answer:- D
33. The lift force of girls normal to the direction of relative motion.
A. True
B. False
Answer:- A
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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