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

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2. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

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3. *In flow, the liquid particles may possess

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4. *Manometers are used to measure

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5. *Differential manometers are used to measure

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

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7. Mach number is the ratio of inertia force to

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8. Specific weight of liquid

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9. *If a pitot tube is placed with its nose facing downstream, the liquid

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10. *The magnitude of capillary rise is more in:

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11. *The discharge passing through the crest having a length of 1.25m, a height of the flow of water 0.25m, and Cd = 0.035 is

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

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13. *The actual velocity through an orifice is........... than the theoretical velocity.

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14. The minimum head loss will occur in

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15. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is

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16. *A flow is said to be laminar when

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

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18. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^3/sec, the length of the weir will be (Cd = 0.62)

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

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

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21. *To measure atmospheric pressure, we use

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

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

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24. *Capillarity of water is

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25. The most efficient channel section is

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26. The thickness of a sharp-crested weir is kept less than

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

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28. The two depths at which the specific energy is the same are called

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29. 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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30. *Hydraulic gradient line (except siphon)

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

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32. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called

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

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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. *Bernoulli's equation assumes that

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

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37. *A stepped notch is a combination of

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

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39. The Manning's formula for flow in an open channel is given by

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40. *Rotameter is used for measuring

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41. Crest of a weir is lower than d/s water level

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

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43. The depth of flow after the hydraulic jump is

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

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

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

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

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48. One horsepower is equal to

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49. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is

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

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