Hydraulics Online Test – Paper 3

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

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

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

4. In an open channels the analysis of a sugar is done by using

5. The maximum velocity in an open channel occurs

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

7. A fluid particle may possess the displacement of

8. *1 m head is equivalent to

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

10. The minimum head loss will occur in

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

12. 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.

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

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

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

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

17. Cavitations is collapsed by

18. *Differential manometers are used to measure

19. 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

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

21. Hydraulic gradient line and total energy line are

22. Pick up the correct statement from the following

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

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

25. *The condition for the maximum velocity and discharge is given by (closed flow)

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

27. *The pressure in pipe flow is normally

28. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^3/sec, the length of the weir will be (Cd = 0.62)

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

30. The most efficient channel section is

31. Velocity of flow may be determined using:

32. *Hydraulic gradient line (except siphon)

33. The head of water representing in the case of HGL line is known as

34. *Bernoulli's equation assumes that

35. Poise is the unit of

36. *The main assumption of Bernoulli's equation is

37. *In flow, the liquid particles may possess

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

39. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

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

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

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

43. *If a pitot tube is placed with its nose facing sideways, the liquid

44. A siphon is an

45. When the fluid is at rest, the shear stress is

46. If the Froude number in open channel flow is less than 1.0, the flow is called

47. *Uniform flow is said to occur when

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

49. 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

50. 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