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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. Discharge over an ogee weir remains the same as that of

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

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3. Specific energy of a flowing fluid per unit weight is equal to

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

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5. The continuity equation

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

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

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8. *Barometers are used to measure

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9. The pressure less than atmospheric pressure is known as

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10. Water belongs to

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11. 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

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

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13. From a nozzle exposed to the atmosphere, the liquid jet traverses

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14. A steady uniform flow is through a

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15. *The difference between the total energy gradient line and the total energy line is

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16. An intensifier is used to increase

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

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18. *The discharge through a rectangular channel is maximum when

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

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

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21. The term P/pg is known as

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22. 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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23. *The pressure in pipe flow is normally

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24. *Piezometers are used to measure

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25. *A pitot tube is used to measure

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26. The viscosity of gases varies with temperature

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

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29. *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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30. Weber number is the ratio of inertia force to

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31. The inlet length of a venturimeter

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32. One horsepower is equal to

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33. *Capillary rise is proportional to

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34. *Viscosity of a liquid

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35. 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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36. 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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37. Poise is the unit of

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38. Which of the following is the example of laminar flow?

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

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

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42. *Rotameter is used for measuring

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43. *Chazy's formula is given by

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44. In an open channel flow

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45. The maximum velocity in an open channel occurs

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

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47. *The hydraulic radius is equal to

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48. When the pipes are connected in series, the total rate of flow

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49. *The wetted perimeter of a channel is given by

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50. The minimum head loss will occur in

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