Hydraulics Online Test – Paper 3

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

2. *The main assumption of Bernoulli's equation is

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

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

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

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

7. A ideal fluid

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

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

10. *An independent mass of a fluid does not possess

11. 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

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

13. In fluids, steady flow occurs when

14. *Stoke is the unit of

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

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

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

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

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

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

21. *A flow is said to be laminar when

22. Liquids or fluids

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

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

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

26. Hydraulic gradient line and total energy line are

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

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

29. Hooke's law for solids is analogous to

30. The pressure less than atmospheric pressure is known as

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

32. In an open tube, the free surface of mercury remains

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

34. 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.)

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

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

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

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

39. *Differential manometers are used to measure

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

41. The maximum velocity in an open channel occurs

42. If the specific gravity of oil is 0.7, then find the density of oil

43. 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)

44. The viscosity of gases varies with temperature

45. *Viscosity of a liquid

46. 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

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

48. Open channel flow is

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

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