Hydraulics Online Test – Paper 3

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

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

3. An oil of specific gravity 0.7 and pressure 0.14 kgf/cm^2 will have the height of oil as

4. *Hydraulic gradient is equal to

5. For uniform flow in the channel

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

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

8. The basic head loss in a long pipe is:

9. The inlet length of a venturimeter

10. *The types of instrument used to measure low pressure with accuracy is

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

12. For a long pipe, the head loss

13. The section of the Jet leaving an orifice, having the minimum cross-section area, is called

14. Cavitations is collapsed by

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

16. *Uniform flow is said to occur when

17. *Surface tension is the force

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

19. Mach number is the ratio of inertia force to

20. *Capillary rise is proportional to

21. *The discharge through a rectangular channel is maximum when

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

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

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

25. One horsepower is equal to

26. Weber number is the ratio of inertia force to

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

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

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

30. 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)

31. Gauge pressure is

32. Which of the following quantities are dimensionless?

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

34. Crest of a weir is lower than d/s water level

35. Super-critical flow occurs in

36. *What affects the quantity of mass of a fluid?

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

38. A steady uniform flow is through a

39. Open channel flow is

40. The total energy of a liquid in motion is equal to:

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

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

43. The capillary rise or fall of the liquid is given by

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

45. The minimum head loss will occur in

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

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

48. *Which of the following statements is valid?

49. *Venturimeter is used to measure

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.)