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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%
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1. *Orifice-meter is used to measure:

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2. *The float method is used to measure

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

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4. 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

5 / 50

5. *Barometers are used to measure

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6. The maximum velocity in an open channel occurs

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7. *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

8 / 50

8. *Viscosity of a liquid

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9. For the laminar flow through a circular pipe, the maximum velocity is

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10. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as

11 / 50

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

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12. Weber number is the ratio of inertia force to

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13. *Capillary rise is proportional to

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14. *Molecules of fluids get attracted due to

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15. *Hydraulic gradient line (H.G.L.) represents the sum of

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

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

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18. *A pitot tube is used to measure

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19. *Pascal's law states that pressure at a point is equal in all directions

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

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22. The term z is known as

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23. 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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24. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a rectangular notch is

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25. Flow in pipes is turbulent if the Reynolds number is

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26. *Venturimeter is used to measure

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27. If the Froude number in open channel flow is less than 1.0, the flow is called

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28. The attraction among different particles of the same material is

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29. A siphon is an

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30. Hydraulic gradient line for an open flow channel is

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

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32. Head loss due to friction in a pipe is given by the Darcy-Weisbach equation

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33. Cavitations is collapsed by

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34. *Differential manometers are used to measure

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35. *Hydraulic gradient is equal to

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36. *The hydraulic ram is a pump that works on

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37. Hydrostatic pressure on a dam depends upon its

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38. A triangular notch is preferred to a rectangular notch because

39 / 50

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

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40. Liquids

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41. The continuity equation

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42. Gauge pressure is

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43. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as:

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44. In a venturimeter, the divergent cone is kept

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

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46. 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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47. *Hydraulic gradient line (except siphon)

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

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

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50. Mach number is the ratio of inertia force to

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