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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

2 / 50

2. For a circular channel, the wetted perimeter is given by (where θ=half the angle subtended by the water at the center and R= radius of circular channel)

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

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4. *Pressure head is given by

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

6 / 50

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

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

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8. *1 m head is equivalent to

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9. 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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10. *Which of the following statements is valid?

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11. *The hydraulic ram is a device

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12. *Hydraulic gradient is equal to

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13. *The most economical section of a circular channel for the maximum velocity is when

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14. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is

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

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16. *The specific weight of water 1000 kg/m^3

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

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18. The ratio of the percentage error in the discharge and the percentage error in the measurement of head over a triangular notch is

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19. *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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20. *A flow is said to be laminar when

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

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22. 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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23. A ideal fluid

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24. For a long pipe, the head loss

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25. The depth of flow after the hydraulic jump is

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26. The continuity equation

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27. The ratio of the mean velocity to the surface velocity in open channels is equal to

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28. *Capillary rise is proportional to

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29. *The hydraulic radius is equal to

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

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31. Gauge pressure is

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32. *Orifice-meter is used to measure:

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33. Water belongs to

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34. The viscosity of liquids varies with temperature

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35. *The main assumption of Bernoulli's equation is

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36. In an open channel flow

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37. *The condition for the maximum velocity and discharge is given by (closed flow)

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38. *Differential manometers are used to measure

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

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40. Hydraulic gradient line and total energy line are

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

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

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43. *Uniform flow is said to occur when

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44. Hooke's law for solids is analogous to

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45. Which of the following quantities are dimensionless?

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46. *Head loss increases with

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47. In a venturimeter, the divergent cone is kept

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

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49. With a clinging nappe of a weir, the excess discharge is

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50. The term P/pg is known as

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