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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. In the case of vortex flow, the level of water at the center is

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

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

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4. The most efficient channel section is

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5. In an open channel flow

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

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7. *An orifice is called a large orifice if the water head is

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8. *The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream, causing a distinct rise of the liquid surface, is

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9. *Barometers are used to measure

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10. Reynolds number is the ratio of initial force and

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11. *Variation in volume of liquid with variation in pressure is called

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12. In a venturimeter, the divergent cone is kept

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13. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

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14. If the specific gravity of oil is 0.7, then find the density of oil

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

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16. *The term v^2/2g is known as

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

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18. *Losses are more in

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

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

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21. *Manometers are used to measure

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22. Liquids or fluids

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23. In a flowing liquid, a particle may possess

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24. Pick up the correct statement from the following

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

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

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27. For uniform flow in the channel

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28. *The types of instrument used to measure low pressure with accuracy is

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29. The pressure less than atmospheric pressure is known as

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30. Chazy's formula is used to determine

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

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32. A steady uniform flow is through a

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33. Hydraulic gradient line for an open flow channel is

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34. 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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35. When the pipes are connected in parallel, the total loss of head

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36. *If a pitot tube is placed with its nose facing sideways, the liquid

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37. *Which of the following statements is valid?

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38. *Differential manometers are used to measure

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39. 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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40. Hydraulic gradient line and total energy line are

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41. *Capillary rise is proportional to

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42. *A flow is said to be laminar when

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43. *Bernoulli's equation assumes that

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44. 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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45. To avoid an interruption in the flow of a siphon, the air vessel is provided

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46. *Surface float is used to measure

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47. 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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48. Gauge pressure is

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

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50. *Hydraulic gradient line (except siphon)

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