Hydraulics Online Test – Paper 3

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

2. 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

3. The numerical value of vorticity is.....of the rotation

4. *The pressure in pipe flow is normally

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

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

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

8. The discharge through a V-notch weir is directly proportional to:

9. *In flow, the liquid particles may possess

10. Specific weight of liquid

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

12. Open channel flow is

13. Cavitations is collapsed by

14. *The discharge through a rectangular channel is maximum when

15. The term z is known as

16. *The hydraulic radius is equal to

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

18. Velocity of flow may be determined using:

19. *Manometers are used to measure

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

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

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

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

24. As per our convenience which one is correct with respect to the dimensionless number?

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

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

27. When the fluid is at rest, the shear stress is

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

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

30. 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

31. 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

32. *Bernoulli's equation assumes that

33. *Head loss increases with

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

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

36. *Pressure within a soap bubble is

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

38. *Uniform flow is said to occur when

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

40. *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

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

42. *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

43. Pick up the correct statement from the following

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

45. The maximum velocity in an open channel occurs

46. The depth of flow after the hydraulic jump is

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

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

49. *The magnitude of water hammer depends upon

50. 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.