Hydraulics Online Test – Paper 3

1. *Total energy line (T.E.L) represents the sum of

2. The depth of flow at which the specific energy is minimum is called

3. *The upper surface of the weir over which water flows is known as:

4. *Water cushion is used to

5. The flow in which each liquid particle has a definite path is called

6. *The width of a weir with end contraction is

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

8. *Piezometers are used to measure

9. "Manning's formula is used for

10. The basic head loss in a long pipe is:

11. *Capillary rise is proportional to

12. The depth of flow after the hydraulic jump is

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

14. Hydraulic gradient line and total energy line are

15. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

16. *Molecules of fluids get attracted due to

17. A fluid particle may possess the displacement of

18. *Bernoulli's theorem deals with the law of conservation of

19. Chazy's formula is used to determine

20. In an open channel flow

21. Gauge pressure is

22. *Chazy's formula is given by

23. *The upper surface of the weir over which water flows is known as

24. The numerical value of vorticity is.....of the rotation

25. *The discharge through a rectangular channel is maximum when

26. *Cipolletti weir is a trapezoidal weir having a side slope of

27. *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

28. Euler's number is the ratio of

29. *Variation in volume of liquid with variation in pressure is called

30. *The term v^2/2g is known as

31. Which of the following is the example of laminar flow?

32. The two depths at which the specific energy is the same are called

33. In an open tube, the free surface of mercury remains

34. *The flow in which the path of individual particles of liquid cross each other is called

35. In the case of vortex flow, the level of water at the center is

36. Specific weight of liquid

37. The water immediately downstream of the conduit or weir is called

38. *The discharge through a trapezoidal channel is maximum when

39. *The actual velocity through an orifice is........... than the theoretical velocity.

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

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

42. Mass density of liquid (p) is given by

43. *Hydraulic gradient line (H.G.L.) represents the sum of

44. *The pressure in pipe flow is normally

45. Critical depth (he) is given by (where q= rate of flow per unit width of channel)

46. *The imaginary line joining each head of water is called

47. *To measure atmospheric pressure, we use

48. The inlet length of a venturimeter

49. 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

50. A steady uniform flow is through a