Hydraulics Online Test – Paper 3

1. Mouthpieces are used to measure

2. *The atmospheric pressure varies with

3. In an open tube, the free surface of mercury remains

4. *Chazy's formula is given by

5. 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

6. The term z is known as

7. *Viscosity of a liquid

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

9. One horsepower is equal to

10. Water belongs to

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

12. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if

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

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

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

16. The most efficient channel section is

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

18. Crest of a weir is lower than d/s water level

19. Rotation is defined as the movement of a fluid element in such a way that both of its axes rotate in...

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

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

22. 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.)

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

24. *The hydraulic ram is a device

25. Euler's number is the ratio of

26. With a clinging nappe of a weir, the excess discharge is

27. Cavitations is collapsed by

28. Hydraulic gradient line and total energy line are

29. *Hydraulic gradient line (except siphon)

30. *Back water curve is caused if there is a

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

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

33. A rise or fall of liquid in a glass tube of a very small diameter when dipped is

34. *Differential manometers are used to measure

35. In a venturimeter, the divergent cone is kept

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

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

38. *Pressure head is given by

39. A siphon is an

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

41. For a long pipe, the head loss

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

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

44. *The magnitude of capillary rise is more in:

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

47. If the fluid particles move in a zig-zag way, the flow is called

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

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

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