Hydraulics Online Test – Paper 3

1. *The hydraulic radius is equal to

2. In a venturimeter, the divergent cone is kept

3. Head loss due to friction in a pipe is given by the Darcy-Weisbach equation

4. A substance which deforms continuously under the action of shear stress is called

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

6. Weber number is the ratio of inertia force to

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

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

9. 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

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

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

12. Mouthpieces are used to measure

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

14. *Rotameter is used for measuring

15. For a long pipe, the head loss

16. *In flow, the liquid particles may possess

17. The minimum head loss will occur in

18. *If the volume of a liquid weighing 2400 kg is 3 cubic meters, then 0.8 is its:

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

20. The continuity equation

21. *Stoke is the unit of

22. 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

23. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

24. Specific weight of liquid

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

26. Pick up the correct statement from the following

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

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

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

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

31. A steady uniform flow is through a

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

33. The inlet length of a venturimeter

34. *Hydraulic gradient is equal to

35. *A flow is said to be laminar when

36. The term z is known as

37. *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

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

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

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

41. Critical depth (he) is given by (where q= rate of flow per unit width of channel)

42. *Pressure head is given by

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

44. *Piezometers are used to measure

45. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is

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

47. 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

48. *Viscosity of a liquid

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

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