Hydraulics Online Test – Paper 3

1. Super-critical flow occurs in

2. *The types of instrument used to measure low pressure with accuracy is

3. Weber number is the ratio of inertia force to

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

5. *Bernoulli's equation assumes that

6. *The rate of flow through a venturimeter varies as

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

8. Velocity of flow may be determined using:

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

10. *Molecules of fluids get attracted due to

11. *Surface float is used to measure

12. The depth of flow after the hydraulic jump is

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

14. *An ideal flow of a liquid obeys

15. 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

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

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

18. Cavitations is collapsed by

19. Specific weight of liquid

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

21. The pressure less than atmospheric pressure is known as

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

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

24. 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.

25. Reynolds number is the ratio of initial force and

26. *A stepped notch is a combination of

27. Which of the following is the example of laminar flow?

28. *Stoke is the unit of

29. A ideal fluid

30. *The continuity equation deals with the law of conservation of

31. Cavitations in flowing fluid occurs when

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

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

34. 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

35. *Total energy line (T.E.L) represents the sum of

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

37. *A flow is said to be laminar when

38. Falling drops of water become spheres due to

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

40. 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

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

42. A steady uniform flow is through a

43. The term z is known as

44. Water belongs to

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

46. Hooke's law for solids is analogous to

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

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

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

50. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to