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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. *To measure atmospheric pressure, we use

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2. The continuity equation

3 / 50

3. *Bernoulli's equation assumes that

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4. *The wetted perimeter of a channel is given by

5 / 50

5. A fluid particle may possess the displacement of

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6. *The hydraulic radius is equal to

7 / 50

7. *Losses are more in

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8. 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

9 / 50

9. *A flow is said to be laminar when

10 / 50

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

11 / 50

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

12 / 50

12. The maximum velocity in an open channel occurs

13 / 50

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

14 / 50

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

15 / 50

15. From a nozzle exposed to the atmosphere, the liquid jet traverses

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16. Gauge pressure is

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17. The pressure less than atmospheric pressure is known as

18 / 50

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

19 / 50

19. Mouthpieces are used to measure

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

21 / 50

21. *The float method is used to measure

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22. *Cipolleti weir is a

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

24 / 50

24. A vessel having a depth of 30 cm is filled with water up to a depth of 10 cm from the top level. Find the pressure exerted at a depth of 5 cm and 15 cm from the top of the vessel respectively

25 / 50

25. *Surface float is used to measure

26 / 50

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

27 / 50

27. *What affects the quantity of mass of a fluid?

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

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

30 / 50

30. *The rate of flow through a V-notch varies as:

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31. *The orifice used for low discharge is

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32. Practical fluids possess

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33. In an inclined pipe, the pressure difference at its two ends is due to

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

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

36 / 50

36. *Chazy's formula is given by

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

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

39 / 50

39. Euler's number is the ratio of

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40. *Uniform flow is said to occur when

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41. The upward water pressure at the base of the structure is called

42 / 50

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

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43. *If a pitot tube is placed with its nose facing sideways, the liquid

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44. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of channels is made by comparing

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

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

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47. *Capillarity of water is

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

49 / 50

49. 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.

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

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