Hydraulics Online Test – Paper 3

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

2. *Chazy's formula is given by

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

4. *A flow is said to be laminar when

5. In a flowing liquid, a particle may possess

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

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

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

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

10. *To measure atmospheric pressure, we use

11. 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.

12. Which of the following has the highest coefficient of discharge:

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

14. Super-critical flow occurs in

15. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is

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

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

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

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

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

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

22. Pick up the correct statement from the following

23. The error 1% in measuring H will produce a

24. Hydraulic gradient line for an open flow channel is

25. *Cipolleti weir is a

26. *The pressure in pipe flow is normally

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

28. *Hydraulic gradient is equal to

29. *Water cushion is used to

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

31. 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

32. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particle at each point is called

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

34. *The actual velocity through an orifice is........... than the theoretical velocity.

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

36. Specific weight of liquid

37. *Cipolletti weir is a trapezoidal weir having a side slope of

38. *Total energy line (T.E.L) represents the sum of

39. *Head loss increases with

40. *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

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

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

43. Liquids

44. The continuity equation

45. *The most economical section of a circular channel for the maximum velocity is when

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

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

48. 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)

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

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