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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. The term z is known as

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2. 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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3. 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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4. *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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5. *The wetted perimeter of a channel is given by

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6. A substance which deforms continuously under the action of shear stress is called

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7. Mouthpieces are used to measure

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8. For a long pipe, the head loss

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9. Falling drops of water become spheres due to

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10. A siphon is an

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

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12. In an open channels the analysis of a sugar is done by using

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13. *Piezometers are used to measure

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

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15. For any channel section, the specific energy increase with

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

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17. The maximum velocity in an open channel occurs

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18. In fluids, steady flow occurs when

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19. The depth of flow after the hydraulic jump is

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20. The profile of rising water on the upstream side of the dam is called

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21. In an inclined pipe, the pressure difference at its two ends is due to

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

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23. *Hydraulic gradient line (except siphon)

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24. In a flowing liquid, a particle may possess

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25. In an open channel flow

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

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27. *To measure atmospheric pressure, we use

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

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29. Poise is the unit of

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30. *Surface tension is the force

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31. 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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32. *Molecules of fluids get attracted due to

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33. The discharge through a V-notch weir is directly proportional to:

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

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35. *Bernoulli's equation is applied to

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

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37. *Hydraulic gradient is equal to

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38. *A stepped notch is a combination of

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39. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as:

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40. Hydrostatic pressure on a dam depends upon its

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41. *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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42. The hydrostatic force exerted by 2 m deep water on the gate downstream is equal to

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

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44. Open channel flow is

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

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

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

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48. "Manning's formula is used for

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49. 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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50. *Rotameter is used for measuring

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