Hydraulics Online Test – Paper 3

1. A siphon is used

2. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is

3. *The continuity equation deals with the law of conservation of

4. *Which of the following statements is valid?

5. *The floating method is used for the measurement of

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

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

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

9. For uniform flow in the channel

10. Water hammer is a phenomenon that occurs

11. One horsepower is equal to

12. *The difference between the total energy gradient line and the total energy line is

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

14. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as:

15. 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

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

17. Crest of a weir is lower than d/s water level

18. *The hydraulic radius is equal to

19. *The wetted perimeter of a channel is given by

20. *The rise of the water table, which takes place due to the transformation of the unstable shooting flow (super-critical) to the stable streaming is called

21. For the same specific force, the two depths at which the same discharge occurs are called

22. Liquids

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

24. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^3/sec, the length of the weir will be (Cd = 0.62)

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

26. A siphon is an

27. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

28. A substance which deforms continuously under the action of shear stress is called

29. *If the velocity, pressure, density, etc., do not change at a point with respect to time, the flow is called

30. Gauge pressure is

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

32. Specific weight of liquid

33. *The energy possessed by a fluid by virtue of its existing pressure is called

34. *Pressure head is given by

35. When the fluid is at rest, the shear stress is

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

37. *The magnitude of water hammer depends upon

38. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to

39. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be

40. Discharge over an ogee weir remains the same as that of

41. Water belongs to

42. 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

43. *The rate of flow through a V-notch varies as:

44. A fluid particle may possess the displacement of

45. *If a pitot tube is placed with its nose facing sideways, the liquid

46. Which of the following has the highest coefficient of discharge:

47. 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

48. The depth of flow after the hydraulic jump is

49. In fluids, steady flow occurs when

50. Cavitations is collapsed by