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

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2. *To measure atmospheric pressure, we use

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

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4. *The upper surface of the notch over which water flows is known as

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5. The depth of flow after the hydraulic jump is

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6. A siphon is an

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7. Which of the following quantities are dimensionless?

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8. An oil of specific gravity 0.7 and pressure 0.14 kgf/cm^2 will have the height of oil as

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9. *Stoke is the unit of

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10. Hydrostatic pressure on a dam depends upon its

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

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

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14. *The pressure in pipe flow is normally

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

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16. Velocity of flow may be determined using:

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17. *The magnitude of water hammer depends upon

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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. For a long pipe, the head loss

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20. Liquids or fluids

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

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

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23. 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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24. The term z is known as

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25. In an open channel flow

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26. *Rotameter is used for measuring

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27. In fluids, steady flow occurs when

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

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

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

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31. The minimum head loss will occur in

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32. Super-critical flow occurs in

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

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35. The term P/pg is known as

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

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37. *Hydraulic gradient is equal to

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38. *Barometers are used to measure

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39. *Total energy line (T.E.L) represents the sum of

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

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41. Reynolds number is the ratio of initial force and

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42. Which of the following has the highest coefficient of discharge:

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43. *Pressure head is given by

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

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

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46. *1 m head is equivalent to

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47. 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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48. Hydraulic gradient line for an open flow channel is

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49. *Which of the following statements is valid?

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50. A siphon is used

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