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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 discharge through a trapezoidal channel is maximum when

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

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3. The water immediately downstream of the conduit or weir is called

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4. *Surface float is used to measure

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5. 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.)

6 / 50

6. Mach number is the ratio of inertia force to

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7. *To measure atmospheric pressure, we use

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

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

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10. When the fluid is at rest, the shear stress is

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11. Hooke's law for solids is analogous to

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

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13. A siphon is an

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14. *Cavitations is caused by

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15. In fluids, steady flow occurs when

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16. *Hydraulic gradient line (except siphon)

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17. In an open channel flow

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18. If fluid or flow parameters at any given instant remain the same at every point in space, it is called:

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

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21. For any channel section, the specific energy increase with

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22. *A pitot tube is used to measure

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23. A steady uniform flow is through a

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24. *Uniform flow is said to occur when

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25. In an inclined position, a venturimeter records

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

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

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28. Specific weight of sea water is more than that of pure water because of

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

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

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

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33. A fluid particle may possess the displacement of

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34. 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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35. Euler's number is the ratio of

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36. *Viscosity of a liquid

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37. The continuity equation

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

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39. Which of the following quantities are dimensionless?

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

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41. Falling drops of water become spheres due to

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42. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called

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43. The head of water representing in the case of HGL line is known as

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44. *Piezometers are used to measure

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45. *Pressure head is given by

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

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

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48. *The pressure in pipe flow is normally

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49. If the velocity in a fluid flow changes with respect to the length of the direction of the flow, it is called

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50. *Orifice-meter is used to measure:

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