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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 basic head loss in a long pipe is:

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2. 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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3. *An ideal flow of a liquid obeys

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

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

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6. *The hydraulic radius is equal to

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

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8. Water hammer is a phenomenon that occurs

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9. Discharge over an ogee weir remains the same as that of

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10. 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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11. If the Froude number in open channel flow is more than 1.0, the flow is called

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

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13. Poise is the unit of

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

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15. The flow in which each liquid particle has a definite path is called

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16. 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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17. *Bernoulli's equation assumes that

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18. *If a pitot tube is placed with its nose facing downstream, the liquid

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

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20. The depth of flow after the hydraulic jump is

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21. The pressure less than atmospheric pressure is known as

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

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

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25. Hydrostatic pressure on a dam depends upon its

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26. Hydraulic gradient line and total energy line are

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27. The two depths at which the specific energy is the same are called

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

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30. *The magnitude of water hammer depends upon

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

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32. Super-critical flow occurs in

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33. If the total head of the nozzle of a pipe is 37.5m and the discharge is 1 cubic meter per second, then the power generated is

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34. When the pipes are connected in series, the total rate of flow

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35. A siphon is an

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

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

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38. A triangular notch is preferred to a rectangular notch because

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39. *The energy possessed by a fluid by virtue of its existing pressure is called

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40. One horsepower is equal to

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41. Total head of a particle in motion is the sum of

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42. Reynolds number is the ratio of initial force and

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43. *Hydraulic gradient line (except siphon)

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

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45. The section of the Jet leaving an orifice, having the minimum cross-section area, is called

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

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48. *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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49. Falling drops of water become spheres due to

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50. *Piezometers are used to measure

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