Hydraulics Online Test – Paper 3

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

2. *Molecules of fluids get attracted due to

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

4. *The imaginary line joining each head of water is called

5. A fluid particle may possess the displacement of

6. *Capillary rise is proportional to

7. Mouthpieces are used to measure

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

9. Which of the following quantities are dimensionless?

10. "Maximum efficiency of power transmission through a pipe is

11. Pick up the correct statement from the following

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

13. An intensifier is used to increase

14. The pressure less than atmospheric pressure is known as

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

16. Hydrostatic pressure on a dam depends upon its

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

18. If S is the height of the crest above the base of the channel and H is the head of water over the weir, whose length is L and discharge is Q m^3/sec, the velocity of approach V_a is

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

20. In a venturimeter, the divergent cone is kept

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

22. A steady uniform flow is through a

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

24. *Cavitations is caused by

25. *Chazy's formula is given by

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

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

28. *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

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

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

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

32. *The notch angle for the maximum discharge over a triangular notch is

33. *Surface tension is the force

34. *The magnitude of water hammer depends upon

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

36. *The equation of continuity of fluids is applicable only if

37. Water belongs to

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

39. Falling drops of water become spheres due to

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

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

42. Practical fluids possess

43. 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.)

44. In fluids, steady flow occurs when

45. If H is the height of the liquid above the sill, the effect of end contraction on each side, according to Francis' formula, is

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

47. The flow in which each liquid particle has a definite path is called

48. *The atmospheric pressure varies with

49. Weber number is the ratio of inertia force to

50. *The types of instrument used to measure low pressure with accuracy is