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Hydraulics Online Test – Paper 3

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Created by 83a36dcfd5c4caff12bc80f0020c9c749e12cbbbdb7c406dc1dd39996cb85836?s=32&d=monsterid&r=g gkaimVikash chaudhary

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  • Total Questions: 50
  • Time Allotted: 50 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
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1. *The orifice used for low discharge is

2 / 50

2. *The atmospheric pressure varies with

3 / 50

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

4 / 50

4. *Cavitations is caused by

5 / 50

5. *Hydraulic gradient is equal to

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

7 / 50

7. *The hydraulic radius is equal to

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

13. 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.

14 / 50

14. If the velocity in a fluid flow changes with respect to the length of the direction of the flow, it is called

15 / 50

15. Velocity of flow may be determined using:

16 / 50

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

17 / 50

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

18 / 50

18. *The most economical section of a circular channel for the maximum velocity is when

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19. *The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream, causing a distinct rise of the liquid surface, is

20 / 50

20. *The magnitude of water hammer depends upon

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

22 / 50

22. 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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

27. Hydraulic gradient line and total energy line are

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

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

30 / 50

30. The term P/pg is known as

31 / 50

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

32 / 50

32. Critical depth (he) is given by (where q= rate of flow per unit width of channel)

33 / 50

33. *Bernoulli's equation assumes that

34 / 50

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

35 / 50

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

36 / 50

36. Practical fluids possess

37 / 50

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

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38. If S is the height of the crest above the base of the channel and H is the head of water over the weir, whose length is L and discharge is Q m^3/sec, the velocity of approach Va is

39 / 50

39. 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

40 / 50

40. For uniform flow in the channel

41 / 50

41. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

45. *Pressure within a soap bubble is

46 / 50

46. In a venturimeter, the divergent cone is kept

47 / 50

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

48 / 50

48. Mach number is the ratio of inertia force to

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

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50. One horsepower is equal to

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