# Mcq on turbulent flow

## The mechanical Engineering in that the fluid mechanics is vital role for the all Competitive exams, so let's learn about Concept of Mcq on Turbulent flow  to clear the concepts.So keeping these things, Lets understand the concept of Mcq on Turbulent flow. (adsbygoogle = window.adsbygoogle || []).push({}); Mcq on turbulent flow

## Objective questions MCQ on Turbulent flow is as follows:-

1. The Turbulent flows are highly unstable.
A. True
B. False

2. The flow of Turbulent is always highly irregular.
A. True
B. False

3. The higher skin friction are produced in turbulent flow.
A. True
B. False

4. The overall drag force is less for turbulent flow.
A. True
B. False

5. The mathematical equation is used to represent the randomness of the turbulent flow is....
a) RANS
b) Reynolds number
c) Parallelogram
d) DNS

6. Addition of Steady velocity and Fluctuating component of velocity for Reynold's decomposition for Turbulent flow.
A. True
B. False

7. Eddies are in the turbulent flows give result in...
a) high diffusion coefficients
b) low diffusion coefficients
c) high value of the sourced
d) low value source term

8. Vortex stretching is method to increase in the component of vorticity in the stretching direction.
A. True
B. False

9. For the larger eddie in Turbulent flow.....
a) High viscosity and linear motions conserved
b) Low viscosity conserved
c) High viscosity conserved
d) Low viscosity and angular momentum to be conserved

10. The surface is perturb the boundary layer and promoting the turbulence.
a) True
b) False

11. The flow over a golf ball is considered a stationary.
a) True
b) False

12. Energy content peaks at low the wavenumber.
a) True
b) False

13. Which of the following is the cause of turbulence.
A. Shear flow
B. Sudden discontinuity
C. Change in velocity distribution
D. All of the above

14. Shear flow causes the turbulence in fluid mechanics.
a) True
b) False

15. Shear stress in turbulent flow is....
A. Laminar shear stress - turbulent shear stress
B. Laminar shear stress × turbulent shear stress
C. Laminar shear stress + turbulent shear stress
D. Laminar shear stress ÷ turbulent shear stress

16. The eddy viscosity are dependent on turbulence condition of flow.
A. True
B. False

17. Which of the following is true about the example of turbulent flow.
a) Smoking rises from cigarette
b) Flow on airfoil
c) Laminar flow on pipe
d) Turbulent flow on the airfoil

18. The turbulence is predicted by the Reynolds number.
A. True
B. False

19. Which of the following is true about the Large eddies...
a) are two-dimensional and isotropic
b) are two-dimensional and isotropic
c) are three-dimensional and anisotropic
d) are two-dimensional and anisotropic

20. The Smaller eddies are stretched strongly by large eddies.
A. True
B. False

21. The turbulence causes by the high kinetic energy
a) True
b) False

22. The effort of  laminar flow is to increase the drag and reduced the lift.
a) True
b) False

23. For an Hagen-Poiseuille equation flow is laminar.
a) True
b) False

24. The larger the Reynolds number indicate the flow is turbulent.
A. True
B. False

25. The velocity profile is a logarithmic for the turbulent zone.
A. True
B. False

26. At the wall the value of shear stress is maximum.
A. True
B. False

27. The value of Reynolds number for turbulent flow when flow is flowing through pipe.
A. 2000
B. 2000 to 4000
C. Above 4000
D. None of the above

28. The value of Reynolds number for transition flow when flow is flowing through pipe.
A. 2000
B. 2000 to 4000
C. Above 4000
D. None of the above

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

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