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Hydraulics Online Test – Paper 3

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Created by 83a36dcfd5c4caff12bc80f0020c9c749e12cbbbdb7c406dc1dd39996cb85836?s=32&d=monsterid&r=g gkaimVikash chaudhary

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  • Total Questions: 50
  • Time Allotted: 50 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
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1. *Losses are more in

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2. Specific weight of sea water is more than that of pure water because of

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3. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

4 / 50

4. Head loss due to friction in a pipe is given by the Darcy-Weisbach equation

5 / 50

5. Poise is the unit of

6 / 50

6. *An ideal flow of a liquid obeys

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7. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as

8 / 50

8. *The types of instrument used to measure low pressure with accuracy is

9 / 50

9. Mouthpieces are used to measure

10 / 50

10. The term z is known as

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11. *If fluid or flow parameters at any given instant remain the same at every point in space, it is called:

12 / 50

12. When the pipes are connected in parallel, the total loss of head

13 / 50

13. If S is the height of the crest above the base of the channel and H is the head of water over the weir, whose length is L and discharge is Q m^3/sec, the velocity of approach Va is

14 / 50

14. *Water cushion is used to

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15. A fluid particle may possess the displacement of

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16. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to

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17. If the fluid particles move in a zig-zag way, the flow is called

18 / 50

18. A siphon is used

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19. Reynolds number is the ratio of initial force and

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20. *A pitot tube is used to measure

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21. The error 1% in measuring H will produce a

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22. In the case of a broad-crested weir, the depth of water h at the end of the still is given by

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23. For uniform flow in the channel

24 / 50

24. *The main assumption of Bernoulli's equation is

25 / 50

25. Specific weight of liquid

26 / 50

26. *1 m head is equivalent to

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27. For the flow of liquid from an open-ended tube (nozzle) leading to the formation of a spray of liquid drops, the number generally is

28 / 50

28. The inlet length of a venturimeter

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29. *Stoke is the unit of

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30. If the Froude number in open channel flow is less than 1.0, the flow is called

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31. The ratio of the mean velocity to the surface velocity in open channels is equal to

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32. *If a pitot tube is placed with its nose facing downstream, the liquid

33 / 50

33. The head of water representing in the case of HGL line is known as

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34. The term P/pg is known as

35 / 50

35. The depth of flow after the hydraulic jump is

36 / 50

36. Hydrostatic pressure on a dam depends upon its

37 / 50

37. *Surface float is used to measure

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38. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8)

39 / 50

39. With a clinging nappe of a weir, the excess discharge is

40 / 50

40. Water hammer is a phenomenon that occurs

41 / 50

41. *In flow, the liquid particles may possess

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42. *Hydraulic gradient is equal to

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43. *The rate of flow through a venturimeter varies as

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44. To avoid an interruption in the flow of a siphon, the air vessel is provided

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45. The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit is known as

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46. The pressure difference between inside and outside of a droplet of water is given by (Where σ is surface tension and d is the diameter of the droplet.)

47 / 50

47. Liquids or fluids

48 / 50

48. Specific energy of a flowing fluid per unit weight is equal to

49 / 50

49. *Head loss increases with

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50. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of channels is made by comparing

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