Hydraulics Online Test – Paper 3

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

2. *Capillarity of water is

3. *Orifice-meter is used to measure:

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

5. In the case of leveling by a level pipe, the level is indicated by

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

7. Which of the following quantities are dimensionless?

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

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

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

11. 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

12. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called

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

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

15. Falling drops of water become spheres due to

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

17. *The specific weight of water 1000 kg/m^3

18. Velocity of flow may be determined using:

19. In a flowing liquid, a particle may possess

20. *Pressure within a soap bubble is

21. 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)

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

23. *A pitot tube is used to measure

24. *The upper surface of the notch over which water flows is known as

25. *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

26. The viscosity of liquids varies with temperature

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

28. The continuity equation

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

30. *Venturimeter is used to measure

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

32. Hydraulic gradient line for an open flow channel is

33. Water belongs to

34. *Hydraulic gradient line (except siphon)

35. The pressure less than atmospheric pressure is known as

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

37. If the volume of a liquid weighing 3000 kg is 4 cubic meters, then 0.75 is its

38. A ideal fluid

39. *Surface float is used to measure

40. 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

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

42. Hydraulic gradient line and total energy line are

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

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

45. Weber number is the ratio of inertia force to

46. *Piezometers are used to measure

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

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

49. The pressure difference between inside and outside of a droplet of water is given by (Where σ is surface tension and d is the diameter of the droplet.)

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