Hydraulics Online Test – Paper 3

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

2. *Differential manometers are used to measure

3. If the density of a fluid changes from point to point in a flow region, it is called

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

5. Mouthpieces are used to measure

6. If the Froude number in open channel flow is equal to 1.0, the flow is called

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

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

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

10. In an inclined position, a venturimeter records

11. *Head loss increases with

12. Pick up the correct statement from the following

13. A siphon is an

14. *The notch angle for the maximum discharge over a triangular notch is

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

16. *The float method is used to measure

17. *To measure atmospheric pressure, we use

18. The discharge through a V-notch weir is directly proportional to:

19. *Losses are more in

20. Hooke's law for solids is analogous to

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

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

23. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is

24. *Venturimeter is used to measure

25. 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

26. A fluid particle may possess the displacement of

27. If the specific gravity of oil is 0.7, then find the density of oil

28. *Manometers are used to measure

29. *If the velocity in a fluid flow does not change with respect to the length of the direction of flow, it is called

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

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

32. Cavitations is collapsed by

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

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

35. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if

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

37. *The magnitude of water hammer depends upon

38. *Cavitations is caused by

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

40. 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)

41. For the laminar flow through a circular pipe, the maximum velocity is

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

43. The upward water pressure at the base of the structure is called

44. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is

45. Velocity of flow may be determined using:

46. Gauge pressure is

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

48. *If the volume of a liquid weighing 2400 kg is 3 cubic meters, then 0.8 is its:

49. *Chazy's formula is given by

50. Cavitations in flowing fluid occurs when