Hydraulics Online Test – Paper 3

1. *An ideal flow of a liquid obeys

2. In the case of vortex flow, the level of water at the center is

3. Hooke's law for solids is analogous to

4. *The orifice used for low discharge is

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

6. *Chazy's formula is given by

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

8. *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

9. The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit is known as

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

11. For a long pipe, the head loss

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

13. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is

14. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is

15. A fluid particle may possess the displacement of

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

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

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

19. *Pressure head is given by

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

21. *If the volume of a liquid weighing 2400 kg is 3 cubic meters, then 0.8 is its:

22. *In flow, the liquid particles may possess

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

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

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

26. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as:

27. Chazy's formula is used to determine

28. The depth of flow after the hydraulic jump is

29. Liquids

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

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

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

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

34. In a flowing liquid, a particle may possess

35. The ratio of the mean velocity to the surface velocity in open channels is equal to

36. *Molecules of fluids get attracted due to

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

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

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

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

41. 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

42. *The width of a weir with end contraction is

43. *1 m head is equivalent to

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

45. Water hammer is a phenomenon that occurs

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

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

48. A steady uniform flow is through a

49. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

50. Pick up the correct statement from the following