Hydraulics Online Test – Paper 3

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

2. Practical fluids possess

3. The depth of flow at which the specific energy is minimum is called

4. Hooke's law for solids is analogous to

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

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

7. *Chazy's formula is given by

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

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

10. *Differential manometers are used to measure

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

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

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

14. *A stepped notch is a combination of

15. Super-critical flow occurs in

16. *Stoke is the unit of

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

18. *Variation in volume of liquid with variation in pressure is called

19. *Surface tension is the force

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

21. "Manning's formula is used for

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

23. Water belongs to

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

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

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

27. The most efficient channel section is

28. The viscosity of gases varies with temperature

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

30. In an open channels the analysis of a sugar is done by using

31. *Orifice-meter is used to measure:

32. The two depths at which the specific energy is the same are called

33. Poise is the unit of

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

35. Hydraulic gradient line and total energy line are

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

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

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

39. 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

40. The continuity equation

41. *Pressure within a soap bubble is

42. *Pressure head is given by

43. Hydrostatic pressure on a dam depends upon its

44. *The float method is used to measure

45. Flow in pipes is turbulent if the Reynolds number is

46. A siphon is used

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

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

49. 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.)

50. For any channel section, the specific energy increase with