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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 discharge through a trapezoidal channel is maximum when

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

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3. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if

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

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

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6. 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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7. *The equation of continuity of fluids is applicable only if

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8. *A pitot tube is used to measure

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

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10. 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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11. 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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12. The attraction among different particles of the same material is

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

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14. In an open channel flow

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

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

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17. Chazy's formula is used to determine

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18. Which of the following quantities are dimensionless?

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

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20. One horsepower is equal to

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21. *Cavitations is caused by

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22. *The hydraulic radius is equal to

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23. Water hammer is a phenomenon that occurs

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

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25. 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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26. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

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

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28. *Capillarity of water is

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29. *The float method is used to measure

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30. Reynolds number is the ratio of initial force and

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31. For uniform flow in the channel

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32. A ideal fluid

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

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

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

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

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

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

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

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

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43. The most economical section of a circular channel for the maximum discharge is when

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

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

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47. Mass density of liquid (p) is given by

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

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49. *The condition for the maximum velocity and discharge is given by (closed flow)

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50. *Bernoulli's equation assumes that

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