Hydraulics Online Test – Paper 3

1. 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

2. *Losses are more in

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

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

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

6. A fluid particle may possess the displacement of

7. 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.

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

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

10. *Head loss increases with

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

12. In an open channel flow

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

14. *The notch angle for the maximum discharge over a triangular notch is

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

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

17. A ideal fluid

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

19. If the Froude number in open channel flow is equal to 1.0, the flow is called

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

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

22. The viscosity of gases varies with temperature

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

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

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

26. *Surface tension is the force

27. The term P/pg is known as

28. *Cipolletti weir is a trapezoidal weir having a side slope of

29. *The continuity equation deals with the law of conservation of

30. For a long pipe, the head loss

31. *Hydraulic gradient line (H.G.L.) represents the sum of

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

33. The viscosity of liquids varies with temperature

34. Super-critical flow occurs in

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

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

37. *The hydraulic radius is equal to

38. 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

39. Gauge pressure is

40. If the fluid particles move in a zig-zag way, the flow is called

41. The continuity equation

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

43. Reynolds number is the ratio of initial force and

44. For uniform flow in the channel

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

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

47. *Pressure within a soap bubble is

48. *The float method is used to measure

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

50. *Manometers are used to measure