Hydraulics Online Test – Paper 3

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

2. *An orifice is called a large orifice if the water head is

3. *A stepped notch is a combination of

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

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

6. Practical fluids possess

7. Discharge over an ogee weir remains the same as that of

8. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to

9. 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)

10. *In flow, the liquid particles may possess

11. Hooke's law for solids is analogous to

12. The continuity equation

13. Euler's number is the ratio of

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

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

16. *The hydraulic ram is a device

17. *Barometers are used to measure

18. *Variation in volume of liquid with variation in pressure is called

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

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

21. In an inclined position, a venturimeter records

22. 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

23. *If the velocity in a fluid flow does not change with respect to the length of the direction of flow, it is called

24. In a venturimeter, the divergent cone is kept

25. The minimum head loss will occur in

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

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

28. "Manning's formula is used for

29. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8)

30. *A pitot tube is used to measure

31. *The specific weight of water 1000 kg/m^3

32. Cavitations is collapsed by

33. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called

34. 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

35. A vessel having a depth of 30 cm is filled with water up to a depth of 10 cm from the top level. Find the pressure exerted at a depth of 5 cm and 15 cm from the top of the vessel respectively

36. The Manning's formula for flow in an open channel is given by

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

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

39. *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

40. Liquids

41. *The atmospheric pressure varies with

42. One horsepower is equal to

43. The viscosity of liquids varies with temperature

44. The maximum velocity in an open channel occurs

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

46. A steady uniform flow is through a

47. *Uniform flow is said to occur when

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

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

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