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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. *The rise of the water table, which takes place due to the transformation of the unstable shooting flow (super-critical) to the stable streaming is called

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2. The viscosity of liquids varies with temperature

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3. 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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4. *Back water curve is caused if there is a

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

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

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8. In a venturimeter, the divergent cone is kept

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

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

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

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13. *Stoke is the unit of

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

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15. *In flow, the liquid particles may possess

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

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17. *Capillarity of water is

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18. *Pressure head is given by

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

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

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

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22. Specific energy of a flowing fluid per unit weight is equal to

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

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

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26. *Venturimeter is used to measure

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27. If the density of a fluid changes from point to point in a flow region, it is called

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28. ........ is defined as the maximum increase in water level in the path of the flow of water

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29. In an inclined position, a venturimeter records

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

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31. Specific weight of liquid

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32. 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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33. The viscosity of gases varies with temperature

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34. 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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35. *Capillary rise is proportional to

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36. *Hydraulic gradient line (H.G.L.) represents the sum of

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

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38. The depth of flow at which the specific energy is minimum is called

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39. *The flow in which the path of individual particles of liquid cross each other is called

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40. *To measure atmospheric pressure, we use

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

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

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43. Water hammer is a phenomenon that occurs

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44. Velocity of flow may be determined using:

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

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47. *Surface float is used to measure

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

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49. Liquids

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50. 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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