Hydraulics Online Test – Paper 3

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

2. Flow in pipes is turbulent if the Reynolds number is

3. In a flowing liquid, a particle may possess

4. *Pressure head is given by

5. Find the capillary rise/fall in a glass tube when immersed in mercury with the following given data: surface tension, σ = 0.52 gmf/cm, angle of contact, θ = 130°, S.G. of mercury = 13.6, diameter of the pipe = 2.5 mm.

6. A fluid particle may possess the displacement of

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

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

9. The term z is known as

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

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

12. *Cipolleti weir is a

13. *Pressure within a soap bubble is

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

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

16. *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

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

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

19. The inlet length of a venturimeter

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

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

22. Euler's number is the ratio of

23. *A stepped notch is a combination of

24. Specific weight of liquid

25. *If the velocity, pressure, density, etc., do not change at a point with respect to time, the flow is called

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

27. *Hydraulic gradient is equal to

28. 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

29. Hydraulic gradient line and total energy line are

30. If fluid or flow parameters at any given instant remain the same at every point in space, it is called:

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

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

33. *Bernoulli's theorem deals with the law of conservation of

34. One horsepower is equal to

35. *1 m head is equivalent to

36. The depth of flow at which the specific energy is minimum is called

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

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

39. *The orifice used for low discharge is

40. *Stoke is the unit of

41. The term P/pg is known as

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

43. Hooke's law for solids is analogous to

44. *The magnitude of water hammer depends upon

45. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^3/sec, the length of the weir will be (Cd = 0.62)

46. Falling drops of water become spheres due to

47. Total head of a particle in motion is the sum of

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

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

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