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

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2. Liquids or fluids

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3. *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

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4. 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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5. *Hydraulic gradient is equal to

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

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7. One horsepower is equal to

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8. Reynolds number is the ratio of initial force and

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9. *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

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10. The error 1% in measuring H will produce a

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11. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is

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12. In an open channel flow

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

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14. The term P/pg is known as

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15. *An independent mass of a fluid does not possess

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

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17. In fluids, steady flow occurs when

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

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19. *Manometers are used to measure

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20. A siphon is an

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21. If the Froude number in open channel flow is equal to 1.0, the flow is called

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22. Open channel flow is

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23. Hydrostatic pressure on a dam depends upon its

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24. *The rise of the water table, which takes place due to the transformation of the unstable shooting flow (super-critical) to the stable streaming is called

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

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26. *Differential manometers are used to measure

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27. *Hydraulic gradient line (except siphon)

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

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29. The viscosity of gases varies with temperature

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30. Mouthpieces are used to measure

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

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

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

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

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35. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

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36. If the Froude number in open channel flow is more than 1.0, the flow is called

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

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

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39. 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

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

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41. *Capillarity of water is

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42. Pick up the correct statement from the following

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

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

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45. The term z is known as

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46. The continuity equation

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47. Super-critical flow occurs in

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48. Chazy's formula is used to determine

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49. The section of the Jet leaving an orifice, having the minimum cross-section area, is called

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50. Weber number is the ratio of inertia force to

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