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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 wetted perimeter of a channel is given by

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

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3. A steady uniform flow is through a

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4. Mouthpieces are used to measure

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

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6. *Back water curve is caused if there is a

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7. *Hydraulic gradient is equal to

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8. The depth of flow at which the specific energy is minimum is called

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

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10. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if

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

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

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13. *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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14. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^3/sec, the length of the weir will be (Cd = 0.62)

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

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16. *Piezometers are used to measure

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17. 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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18. *Chazy's formula is given by

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19. 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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20. *The actual velocity through an orifice is........... than the theoretical velocity.

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21. Cavitations in flowing fluid occurs when

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22. Hydrostatic pressure on a dam depends upon its

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

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

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26. Liquids

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27. Velocity of flow may be determined using:

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28. *The float method is used to measure

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29. *Surface float is used to measure

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30. The viscosity of gases varies with temperature

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31. *To measure atmospheric pressure, we use

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

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33. Rotation is defined as the movement of a fluid element in such a way that both of its axes rotate in...

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34. Euler's number is the ratio of

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

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

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37. An intensifier is used to increase

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38. 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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39. *Capillarity of water is

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

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41. *Manometers are used to measure

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42. *The hydraulic radius is equal to

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43. Total head of a particle in motion is the sum of

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44. If the density of a fluid is constant from point to point in a flow region, it is called

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45. *Cipolleti weir is a

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46. *Stoke is the unit of

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

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48. 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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49. The viscosity of liquids varies with temperature

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50. The basic head loss in a long pipe is:

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