Hydraulics Online Test – Paper 3

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

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

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

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

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

6. In fluids, steady flow occurs when

7. *The term v^2/2g is known as

8. In a flowing liquid, a particle may possess

9. *The orifice used for low discharge is

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

11. *Capillarity of water is

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

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

14. Hydraulic gradient line and total energy line are

15. 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

16. *Uniform flow is said to occur when

17. *Manometers are used to measure

18. *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

19. 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

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

21. Gauge pressure is

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

23. *Head loss increases with

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

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

26. The maximum velocity in an open channel occurs

27. *Capillary rise is proportional to

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

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

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

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

32. The numerical value of vorticity is.....of the rotation

33. Poise is the unit of

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

35. An oil of specific gravity 0.7 and pressure 0.14 kgf/cm^2 will have the height of oil as

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

37. Chazy's formula is used to determine

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

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

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

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

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

43. If fluid or flow parameters at any given instant remain the same at every point in space, it is called:

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

45. Hydraulic gradient line for an open flow channel is

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

47. *Molecules of fluids get attracted due to

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

49. Liquids

50. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called