Hydraulics Online Test – Paper 3

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

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

3. A siphon is an

4. *Hydraulic gradient is equal to

5. The term P/pg is known as

6. Reynolds number is the ratio of initial force and

7. 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

8. Water belongs to

9. *To measure atmospheric pressure, we use

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

11. The depth of flow after the hydraulic jump is

12. Euler's number is the ratio of

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

14. Hydraulic gradient line for an open flow channel is

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

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

17. *Water cushion is used to

18. *Cipolleti weir is a

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

20. A ideal fluid

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

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

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

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

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

26. *The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream, causing a distinct rise of the liquid surface, is

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

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

29. 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

30. *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

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

32. *Manometers are used to measure

33. 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

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

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

36. *Stoke is the unit of

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

38. *The hydraulic radius is equal to

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

40. Cavitations in flowing fluid occurs when

41. *Pascal's law states that pressure at a point is equal in all directions

42. *Surface float is used to measure

43. 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

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

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

46. *The continuity equation deals with the law of conservation of

47. *The flow in which the path of individual particles of liquid cross each other is called

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

49. Hooke's law for solids is analogous to

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