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

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2. Hydraulic gradient line for an open flow channel is

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3. In an open tube, the free surface of mercury remains

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4. Specific weight of liquid

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

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7. A fluid particle may possess the displacement of

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8. *Pressure within a soap bubble is

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9. 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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10. *In flow, the liquid particles may possess

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11. The term P/pg is known as

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

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13. Poise is the unit of

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14. *The discharge through a trapezoidal channel is maximum when

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

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16. The maximum velocity in an open channel occurs

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17. *The magnitude of water hammer depends upon

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

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

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22. If the volume of a liquid weighing 3000 kg is 4 cubic meters, then 0.75 is its

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

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24. *Hydraulic gradient is equal to

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25. *To measure very low pressure, we use:

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26. *Manometers are used to measure

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

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28. *An ideal flow of a liquid obeys

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29. In a flowing liquid, a particle may possess

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

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31. *The atmospheric pressure varies with

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

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33. *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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34. *If the velocity, pressure, density, etc., do not change at a point with respect to time, the flow is called

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35. In an inclined position, a venturimeter records

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

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37. For the flow of liquid from an open-ended tube (nozzle) leading to the formation of a spray of liquid drops, the number generally is

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

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39. An intensifier is used to increase

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40. The capillary rise or fall of the liquid is given by

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41. *The discharge through a rectangular channel is maximum when

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

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43. The viscosity of liquids varies with temperature

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

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45. *The orifice used for low discharge is

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

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47. 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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48. Total head of a particle in motion is the sum of

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49. If S is the height of the crest above the base of the channel and H is the head of water over the weir, whose length is L and discharge is Q m^3/sec, the velocity of approach Va is

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50. *Head loss increases with

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