Hydraulics Online Test – Paper 3

1. *Head loss increases with

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

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

4. For the flow of liquid from an open-ended tube (nozzle) leading to the formation of a spray of liquid drops, the number generally is

5. 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)

6. *Viscosity of a liquid

7. When the pipes are connected in series, the total rate of flow

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

9. A triangular notch is preferred to a rectangular notch because

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

11. Practical fluids possess

12. *The imaginary line joining each head of water is called

13. *A flow is said to be laminar when

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

15. Which of the following quantities are dimensionless?

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

17. *Capillarity of water is

18. *The term v^2/2g is known as

19. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is

20. The term z is known as

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

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

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

24. 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

25. 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

26. Chazy's formula is used to determine

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

28. *The magnitude of water hammer depends upon

29. Reynolds number is the ratio of initial force and

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

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

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

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

34. "Manning's formula is used for

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

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

37. Specific energy of a flowing fluid per unit weight is equal to

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

39. A steady uniform flow is through a

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

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

42. *Chazy's formula is given by

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

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

45. *Molecules of fluids get attracted due to

46. *Bernoulli's equation is applied to

47. A fluid particle may possess the displacement of

48. Hooke's law for solids is analogous to

49. An intensifier is used to increase

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