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

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3. *Molecules of fluids get attracted due to

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

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

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6. *The hydraulic ram is a pump that works on

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

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8. *A pitot tube is used to measure

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9. *Cipolletti weir is a trapezoidal weir having a side slope of

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

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11. The most efficient channel section is

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

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13. 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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14. Pick up the correct statement from the following

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15. The term P/pg is known as

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16. *A stepped notch is a combination of

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17. *The continuity equation deals with the law of conservation of

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18. In an open channel flow

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19. Water belongs to

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

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21. *Cipolleti weir is a

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

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

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24. At the vena contracta, the jet has the minimum cross-sectional area, and so the velocity of the liquid at this section will be

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

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26. In the case of leveling by a level pipe, the level is indicated by

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27. *If the velocity of fluid particles varies from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be

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28. In the case of a broad-crested weir, the depth of water h at the end of the still is given by

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

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30. The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit is known as

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31. *The float method is used to measure

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

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33. *Hydraulic gradient is equal to

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

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35. For uniform flow in the channel

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36. Open channel flow is

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37. *The equation of continuity of fluids is applicable only if

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

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

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40. A siphon is an

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41. 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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42. The depth of flow after the hydraulic jump is

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43. Chazy's formula is used to determine

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

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

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46. If the fluid particles move in a zig-zag way, the flow is called

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47. *Orifice-meter is used to measure:

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

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49. A vessel having a depth of 30 cm is filled with water up to a depth of 10 cm from the top level. Find the pressure exerted at a depth of 5 cm and 15 cm from the top of the vessel respectively

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

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