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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. Super-critical flow occurs in

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2. Reynolds number is the ratio of initial force and

3 / 50

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

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4. *The upper surface of the weir over which water flows is known as:

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

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6. *Pressure head is given by

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7. As per our convenience which one is correct with respect to the dimensionless number?

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8. Liquids

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9. *Manometers are used to measure

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10. *Hydraulic gradient is equal to

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11. *Barometers are used to measure

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

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

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14. If the fluid particles move in a zig-zag way, the flow is called

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

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16. *Venturimeter is used to measure

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17. 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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18. An intensifier is used to increase

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19. The profile of rising water on the upstream side of the dam is called

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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. For a long pipe, the head loss

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22. 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

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23. A substance which deforms continuously under the action of shear stress is called

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

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25. The ratio of the mean velocity to the surface velocity in open channels is equal to

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

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27. A steady uniform flow is through a

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28. *The atmospheric pressure varies with

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29. *The hydraulic radius is equal to

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30. Mouthpieces are used to measure

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31. The viscosity of gases varies with temperature

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32. *The pressure in pipe flow is normally

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33. 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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34. *Molecules of fluids get attracted due to

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

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36. *In flow, the liquid particles may possess

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37. 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

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38. In an open channel flow

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39. *Orifice-meter is used to measure:

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40. Liquids or fluids

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

42 / 50

42. *Surface tension is the force

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43. One horsepower is equal to

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44. *Differential manometers are used to measure

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

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47. The continuity equation

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48. *The magnitude of capillary rise is more in:

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49. The thickness of a sharp-crested weir is kept less than

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50. In an inclined position, a venturimeter records

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