Hydraulics Online Test – Paper 3

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

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

3. In an open channel flow

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

5. *The wetted perimeter of a channel is given by

6. The section of the Jet leaving an orifice, having the minimum cross-section area, is called

7. Gauge pressure is

8. Mach number is the ratio of inertia force to

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

10. Hooke's law for solids is analogous to

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

12. In a flowing liquid, a particle may possess

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

14. 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

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

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

17. The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit is known as

18. *Piezometers are used to measure

19. Poise is the unit of

20. *Manometers are used to measure

21. *Uniform flow is said to occur when

22. From a nozzle exposed to the atmosphere, the liquid jet traverses

23. An intensifier is used to increase

24. 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.

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

26. *Hydraulic gradient is equal to

27. The total energy of a liquid in motion is equal to:

28. For any channel section, the specific energy increase with

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

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

31. The profile of rising water on the upstream side of the dam is called

32. A triangular notch is preferred to a rectangular notch because

33. For a long pipe, the head loss

34. The continuity equation

35. If the Froude number in open channel flow is more than 1.0, the flow is called

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

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

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

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

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

41. Open channel flow is

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

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

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

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

46. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to

47. A siphon is an

48. Cavitations in flowing fluid occurs when

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. A steady uniform flow is through a