Hydraulics Online Test – Paper 3

1. In fluids, steady flow occurs when

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

3. If H is the height of the liquid above the sill, the effect of end contraction on each side, according to Francis' formula, is

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

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

6. In an inclined pipe, the pressure difference at its two ends is due to

7. *The discharge passing through the crest having a length of 1.25m, a height of the flow of water 0.25m, and C_d = 0.035 is

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

9. *The magnitude of capillary rise is more in:

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

11. Open channel flow is

12. The term P/pg is known as

13. If the velocity in a fluid flow changes with respect to the length of the direction of the flow, it is called

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

15. A steady uniform flow is through a

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

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

18. *To measure very low pressure, we use:

19. Gauge pressure is

20. Mouthpieces are used to measure

21. *Pressure head is given by

22. 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)

23. When the pipes are connected in series, the total rate of flow

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

25. *Rotameter is used for measuring

26. Chazy's formula is used to determine

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

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

29. The viscosity of gases varies with temperature

30. Falling drops of water become spheres due to

31. The capillary rise or fall of the liquid is given by

32. Water hammer is a phenomenon that occurs

33. *Chazy's formula is given by

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

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

36. *The atmospheric pressure varies with

37. Water belongs to

38. *Capillary rise is proportional to

39. Rotation is defined as the movement of a fluid element in such a way that both of its axes rotate in...

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

41. *Molecules of fluids get attracted due to

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

43. *A pitot tube is used to measure

44. *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

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

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

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

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

49. Cavitations in flowing fluid occurs when

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