Hydraulics Online Test – Paper 3

1. *In flow, the liquid particles may possess

2. *Bernoulli's equation is applied to

3. *Cipolleti weir is a

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

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

6. Hooke's law for solids is analogous to

7. The attraction among different particles of the same material is

8. A fluid particle may possess the displacement of

9. *An orifice is called a large orifice if the water head is

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

11. Hydrostatic pressure on a dam depends upon its

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

13. *The hydraulic ram is a pump that works on

14. *Head loss increases with

15. Practical fluids possess

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

17. *The equation of continuity of fluids is applicable only if

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

19. Hydraulic gradient line for an open flow channel is

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

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

22. *Molecules of fluids get attracted due to

23. Cavitations in flowing fluid occurs when

24. Flow in pipes is turbulent if the Reynolds number is

25. "Manning's formula is used for

26. ........ is defined as the maximum increase in water level in the path of the flow of water

27. *The magnitude of water hammer depends upon

28. Find the capillary rise/fall in a glass tube when immersed in mercury with the following given data: surface tension, σ = 0.52 gmf/cm, angle of contact, θ = 130°, S.G. of mercury = 13.6, diameter of the pipe = 2.5 mm.

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

30. *Which of the following statements is valid?

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

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

33. For a circular channel, the wetted perimeter is given by (where θ=half the angle subtended by the water at the center and R= radius of circular channel)

34. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particle at each point is called

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

36. *The pressure in pipe flow is normally

37. *The hydraulic ram is a device

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

39. The viscosity of liquids varies with temperature

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

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

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

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

44. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is

45. *Surface tension is the force

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

47. Falling drops of water become spheres due to

48. *Orifice-meter is used to measure:

49. Hydraulic gradient line and total energy line are

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