Hydraulics Online Test – Paper 3

1. The viscosity of gases varies with temperature

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

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

4. For the same specific force, the two depths at which the same discharge occurs are called

5. Chazy's formula is used to determine

6. *Manometers are used to measure

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

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

9. *Molecules of fluids get attracted due to

10. Find the capillary rise/fall in a glass tube when immersed in mercury with the following given data: surface tension, σ = 0.52 gmf/cm, angle of contact, θ = 130°, S.G. of mercury = 13.6, diameter of the pipe = 2.5 mm.

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

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

13. The most efficient channel section is

14. *Cipolleti weir is a

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

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

17. *Head loss increases with

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

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

20. *Which of the following statements is valid?

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

22. In a venturimeter, the divergent cone is kept

23. Cavitations is collapsed by

24. *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

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

26. Specific weight of sea water is more than that of pure water because of

27. *Orifice-meter is used to measure:

28. For a long pipe, the head loss

29. 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

30. *An ideal flow of a liquid obeys

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

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

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

34. *Hydraulic gradient line (H.G.L.) represents the sum of

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

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

37. An intensifier is used to increase

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

39. *Bernoulli's theorem deals with the law of conservation of

40. *The magnitude of water hammer depends upon

41. Mass density of liquid (p) is given by

42. *The discharge passing through the crest having a length of 1.25m, a height of the flow of water 0.25m, and C_d = 0.035 is

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

44. Cavitations in flowing fluid occurs when

45. In a flowing liquid, a particle may possess

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

47. A rise or fall of liquid in a glass tube of a very small diameter when dipped is

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

49. *Chazy's formula is given by

50. *To measure atmospheric pressure, we use