Hydraulics Online Test – Paper 3

1. The most economical section of a circular channel for the maximum discharge is when

2. 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

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

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

5. The attraction among different particles of the same material is

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

7. Which of the following quantities are dimensionless?

8. When the pipes are connected in parallel, the total loss of head

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

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

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

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

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

14. Weber number is the ratio of inertia force to

15. *Stoke is the unit of

16. The viscosity of gases varies with temperature

17. Poise is the unit of

18. Falling drops of water become spheres due to

19. Water belongs to

20. *The magnitude of water hammer depends upon

21. 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

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

23. *The actual velocity through an orifice is........... than the theoretical velocity.

24. One horsepower is equal to

25. *Surface float is used to measure

26. When the fluid is at rest, the shear stress is

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

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

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

30. *Cavitations is caused by

31. *If the velocity in a fluid flow does not change with respect to the length of the direction of flow, it is called

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

33. *The hydraulic radius is equal to

34. *Cipolleti weir is a

35. The flow in which each liquid particle has a definite path is called

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

37. A ideal fluid

38. *The orifice used for low discharge is

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

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

41. In the case of vortex flow, the level of water at the center is

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

43. *To measure very low pressure, we use:

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

45. "Manning's formula is used for

46. The pressure less than atmospheric pressure is known as

47. An intensifier is used to increase

48. *A stepped notch is a combination of

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

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