Hydraulics Online Test – Paper 3

1. A steady uniform flow is through a

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

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

4. 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)

5. Water belongs to

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

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

8. 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

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

10. Which of the following quantities are dimensionless?

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

12. Practical fluids possess

13. *Capillarity of water is

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

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

16. 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

17. *Venturimeter is used to measure

18. The inlet length of a venturimeter

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

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

21. 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

22. *Manometers are used to measure

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

24. Hydraulic gradient line and total energy line are

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

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

27. In fluids, steady flow occurs when

28. The thickness of a sharp-crested weir is kept less than

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

30. For the same specific force, the two depths at which the same discharge occurs are called

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

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

33. An intensifier is used to increase

34. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

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

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

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

38. Liquids or fluids

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

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

41. 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.

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

43. *An ideal flow of a liquid obeys

44. In the case of vortex flow, the level of water at the center is

45. *The condition for the maximum velocity and discharge is given by (closed flow)

46. *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

47. For a long pipe, the head loss

48. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of channels is made by comparing

49. The continuity equation

50. For the laminar flow through a circular pipe, the maximum velocity is