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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. If the volume of a liquid weighing 3000 kg is 4 cubic meters, then 0.75 is its

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

3 / 50

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

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4. Hydraulic gradient line and total energy line are

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5. *Hydraulic gradient line (except siphon)

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6. *Chazy's formula is given by

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7. *Stoke is the unit of

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

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9. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be

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

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

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

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

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14. Cavitations in flowing fluid occurs when

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15. *The pressure in pipe flow is normally

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16. Cavitations is collapsed by

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17. *The notch angle for the maximum discharge over a triangular notch is

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18. In the case of vortex flow, the level of water at the center is

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

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

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

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22. *To measure very low pressure, we use:

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23. Liquids

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24. A siphon is an

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25. *To measure atmospheric pressure, we use

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26. *The magnitude of water hammer depends upon

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

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28. Weber number is the ratio of inertia force to

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

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

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31. *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

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

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

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34. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called

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35. "Maximum efficiency of power transmission through a pipe is

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36. *Viscosity of a liquid

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37. 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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38. The basic head loss in a long pipe is:

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39. *Manometers are used to measure

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40. *The width of a weir with end contraction is

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41. The most efficient channel section is

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42. *Surface float is used to measure

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43. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8)

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44. The continuity equation

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45. Mouthpieces are used to measure

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46. *Capillary rise is proportional to

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47. 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.)

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48. The numerical value of vorticity is.....of the rotation

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49. *Differential manometers are used to measure

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

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