# Mcq on flow through pipe

## The mechanical Engineering in that the fluid mechanics is vital role to all Competitive exams, so let's learn about topic of Mcq on flow through pipe  to clear all the concepts.So keeping these things, Lets understand the concept of Mcq on flow through pipe. Mcq on flow through pipe

## Objective questions MCQ on Flow through pipes is as follows:-

1. Major loss in a pipe is a......
a) frictional loss
b) shock loss
c) entry loss
d) exit loss

2. The the major loss in a pipe is about......
A. 70 - 80 %
B. 80 - 90 %
C. 60 - 70 %
D. None of the above

3. When a flow through pipe the pressure in a pipe is greater than atmospheric pressure.
A. True
B. False

4. The frictional resistance of fluids in the motion is proportional to velocity in an laminar flow.
A. True
B. False

5.The frictional resistance of fluids in the motion is proportional to the square of the velocity in an  turbulent flow.
A. True
B. False

6. In a fully developed pipe flow with zero acceleration the pressure drop is linear in a pipe.
A. True
B. False

7. major losses occurs in pipes due to which of the following property of fluid.
a) density of fluid
b) specific gravity
c) viscosity of fluid
d) compressibility

8. The inertia force is......
A. Mass + acceleration
B. Mass - acceleration
C. Mass × acceleration
D. Mass ÷ acceleration

9. the frictional resistance is proportional to the surface area of the contact.
A. True
B. False

10. The frictional resistance of the fluids in motion which varying with temperature for laminar and Turbulent flow.
A. True
B. False

11. The bend coefficient depends on.....
A. radius of curvature of the bend
B. diameter of the pipe
C. angle of the bend
D. All of the above

12. The hydraulic diameter inversely proportional the wetted perimeter.
A. True
B. False

13. Which of the following is a minor loss for a flow through pipes.
A. Sudden contraction and expansion
B. Loss at inlet and outlet
C. Loss due to bend
D. All of the above

14. The bend coefficient in a pipe depends on the radius of curvature , diameter of the pipe and also angle of the bend.
A. True
B. False

15. The Darcy's friction factor for major loss is....
A. Equal to coefficient of friction
B. 2 × coefficient of friction
C. 3 × coefficient of friction
D. 4 × coefficient of friction

16. The friction factor for laminar flow is...
A. 16/Re
B. 64/Re
C. 60/Re
D. 6/Re

17. The fluid friction for the laminar flow is is independent of the pressure.
A. True
B. False

18. Any head loss in the floor profile other than fiction loss is considered as a major loss.
A. True
B. False

19. For series pipe connection the discharge through pipe is constant
A. True
B. False

20. For parallel pipe connection the head loss is constant throughout the pipe.
A. True
B. False

21. For series pipe connection the head loss is....
A. H1- H2
B. H1+H2
C. H1×H2
D. None of the above

22. For maximum power transmission head loss (Hf) is....
A. H/2
B. H/3
C. H
D. H/4

23. The head loss at the inlet of the pipe is that at it’s outlet...
a) equal to
b) half
c) twice of
d) four times

24. The maximum transmission efficiency corresponding to maximum power is....
A. 75%
B. 63%
C. 66.77%
D. 65%

25. Corresponding to maximum power transmission the efficiency  of power transmission is 2/3.
A. True
B. False

26. The efficiency corresponding to maximum transmission of power is not maximum.
A. True
B. False

B. Total energy line
C. Total equations line
D. Transmission line

28. The sum of pressure head and datum head is called as....
B. Total energy line
C. Total equations line
D. Transmission line

A. True
B. False

30. The difference between Total energy line and hydraulic gradient line is....
A. V^2/2
B. V^2/2g
C. V/2
D. V/2g

31. The difference of Total energy line and hydraulic energy line is directly proportional to the square of velocity.
A. True
B. False

32. The hydraulic gradient line is always....... than Total energy line..
A. Parallel and higher
B. Parallel and lower
C. Incline and higher
D. Incline and lower

33. The hydraulic gradient line (HGL) is always parallel and lower than Total energy line (TEL).
A. True
B. False

34. The total energy line is always horizontal for ideal fluid flow.
A. True
B. False

35. The total energy line is always slop downward for real fluid flow.
A. True
B. False

36. The total energy line is always horizontal for real fluid flow.
A. True
B. False

37. If the compound pipe is to be replaced by pipe of uniform diameter that pipe called as...
A. Uniform pipe
B. Equivalent pipe
C. Long pipe
D. Series pipe

38. For the equivalent pipe the loss of aid and discharge of the both the pipes should be same.
A. True
B. False

39. For parallel pipe The rate of discharge in main pipe is equal to the sum of discharge in each pipe.
A. True
B. False

40. A long bend pipe used to connect the two reservoir at a different level by the high ridge called as...
A. Summit
B. Syphon
C. Connecting reservoir
D. None of the above

41. The highest point of the siphon is called as...
A. Summit point
B. Syphon point
C. Connecting reservoir point
D. None of the above

42. The magnitude of water hammer depends on.....
A. Length of pipe
B. Elastic property of pipe material
C. Liquid flowing in pipe
D. All of the above

43. Chezy formula is used for flow through open channel.
A. True
B. False

44. The purpose of surge tank is...
A. To control the pressure variation
B. To eliminate the water hammer effect
C. To regulate the flow of water
D. All of the above

45. The velocity of flow is same at all point in cross section of a channel.
A. True
B. False

46. The air vessel is provided at the summit in a syphon to avoid the interruption in the flow.
A. True
B. False

47. The nozzle is made up generally of convergent shape.
A. True
B. False

48. The pressure of fluid due to hammer blow is..
A. Directly proportional to density
B. Directly proportional to square root of density
C. Inversely proportional to density
D. Inversely to square root of viscosity

49. Water hammer occurs due to sudden change in velocity of fluid.
A. True
B. False

50. The higher efficiency is with.....
A. Square channel
B. rectangular channel
C. Trapezoidal channel
D. Circular channel

51. The trapezoidal channel gives the highest efficiency in all Channel.
A. True
B. False

52. The time taken for a round trip of pressure wave forward and backward called as critical time.
A. True
B. False

53. The pipe of length 916 m v are subjected to pressure wave 480 m/s due to rapid close. The critical time for the valve is.......... Seconds.
A. 2 sec
B. 3 sec
C. 4 sec
D. 5 sec

54. In water hammer the rising pressure may be larger than and the pipe in the pipe will be burst.
A. True
B. False

55. The the Minor loss in a pipe is about......
A. 70 - 80 %
B. 80 - 90 %
C. 60 - 70 %
D. 10 - 20 %

56. The Darcy-Weisbach’s formula are used for calculate head loss in a flow through pipes.
A. True
B. False

57. The critical depth metre is used to measure hydraulic jump.
A. True
B. False

58. The flow of turbulent takes place at the high velocities.
A. True
B. False

59. The velocity corresponding to Reynolds number of 2000 is called as.....
A. Subsonic velocity
B. Lower critical velocity
C. Super sonic velocity
D. Higher critical velocity

60. The velocity corresponding to Reynolds number of 2800 is called as.....
A. Subsonic velocity
B. Lower critical velocity
C. Super sonic velocity
D. Higher critical velocity

61. The bulk modulus of fluid is increases as a pressure increase.
A. True
B. False

62. Reynolds number gives inertia force to gravity force.
A. True
B. False

63. The weir is made up of masonry or concrete.
A. True
B. False

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

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