Hydraulics Online Test – Paper 3

1. Liquids

2. In an open channel flow

3. 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)

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

5. *An independent mass of a fluid does not possess

6. *Head loss increases with

7. Specific weight of liquid

8. *To measure atmospheric pressure, we use

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

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

11. Euler's number is the ratio of

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

13. In a flowing liquid, a particle may possess

14. Reynolds number is the ratio of initial force and

15. 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

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

17. *The orifice used for low discharge is

18. Practical fluids possess

19. *In flow, the liquid particles may possess

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

21. The most economical section of a circular channel for the maximum discharge is when

22. Specific weight of sea water is more than that of pure water because of

23. *Bernoulli's equation assumes that

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

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

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

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

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

29. One horsepower is equal to

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

31. *Cavitations is caused by

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

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

34. Hydrostatic pressure on a dam depends upon its

35. *Surface tension is the force

36. The basic head loss in a long pipe is:

37. *If a pitot tube is placed with its nose facing downstream, the liquid

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

39. In a venturimeter, the divergent cone is kept

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

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

42. The pressure less than atmospheric pressure is known as

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

44. *An ideal flow of a liquid obeys

45. *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

46. The attraction among different particles of the same material is

47. Water belongs to

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

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

50. *Differential manometers are used to measure