Hydraulics Online Test – Paper 3

1. Total head of a particle in motion is the sum of

2. The profile of rising water on the upstream side of the dam is called

3. In fluids, steady flow occurs when

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

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

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

7. 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

8. *The magnitude of water hammer depends upon

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

10. A ideal fluid

11. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

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

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

14. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8)

15. Practical fluids possess

16. *The equation of continuity of fluids is applicable only if

17. *In flow, the liquid particles may possess

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

19. Liquids or fluids

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

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

22. *Pressure within a soap bubble is

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

24. Euler's number is the ratio of

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

26. In the case of leveling by a level pipe, the level is indicated by

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

28. *Molecules of fluids get attracted due to

29. 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

30. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called

31. *The pressure in pipe flow is normally

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

33. 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

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

35. *The float method is used to measure

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

37. Hydrostatic pressure on a dam depends upon its

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

39. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is

40. To avoid an interruption in the flow of a siphon, the air vessel is provided

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

42. Which of the following quantities are dimensionless?

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

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

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

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

47. The discharge through a V-notch weir is directly proportional to:

48. *Manometers are used to measure

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

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