Hydraulics Online Test – Paper 3

1. The pressure less than atmospheric pressure is known as

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

3. *The upper surface of the notch over which water flows is known as

4. The viscosity of liquids varies with temperature

5. *The magnitude of water hammer depends upon

6. Mouthpieces are used to measure

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

8. A fluid particle may possess the displacement of

9. A steady uniform flow is through a

10. *The actual velocity through an orifice is........... than the theoretical velocity.

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

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

13. *The orifice used for low discharge is

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

15. *The rise of the water table, which takes place due to the transformation of the unstable shooting flow (super-critical) to the stable streaming is called

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

17. In fluids, steady flow occurs when

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

19. The most efficient channel section is

20. *Pascal's law states that pressure at a point is equal in all directions

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

22. *Rotameter is used for measuring

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

24. *Viscosity of a liquid

25. *Surface float is used to measure

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

27. *1 m head is equivalent to

28. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to

29. Weber number is the ratio of inertia force to

30. *The float method is used to measure

31. 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

32. Liquids or fluids

33. 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

34. The term P/pg is known as

35. *Chazy's formula is given by

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

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

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

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

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

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

42. *The hydraulic ram is a pump that works on

43. Hydraulic gradient line and total energy line are

44. 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

45. *Venturimeter is used to measure

46. Pick up the correct statement from the following

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

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

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

50. The pressure difference between inside and outside of a droplet of water is given by (Where σ is surface tension and d is the diameter of the droplet.)