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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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  • Certificate: Yes
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1. Liquids or fluids

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

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3. *A flow is said to be laminar when

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

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

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6. 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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7. *The difference between the total energy gradient line and the total energy line is

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8. If the Froude number in open channel flow is equal to 1.0, the flow is called

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9. *The hydraulic radius is equal to

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

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11. *The specific weight of water 1000 kg/m^3

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12. The multiplying factor for converting one poise into MKS unit of dynamic viscosity is

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13. A ideal fluid

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14. When the fluid is at rest, the shear stress is

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15. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as

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16. *The imaginary line joining each head of water is called

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17. For a circular channel, the wetted perimeter is given by (where θ=half the angle subtended by the water at the center and R= radius of circular channel)

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18. Mouthpieces are used to measure

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19. Hydrostatic pressure on a dam depends upon its

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

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

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

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

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24. *Viscosity of a liquid

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25. *The notch angle for the maximum discharge over a triangular notch is

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26. 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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27. *The rate of flow through a venturimeter varies as

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28. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particle at each point is called

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29. *Pressure within a soap bubble is

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30. For the same specific force, the two depths at which the same discharge occurs are called

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31. When the pipes are connected in parallel, the total loss of head

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

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33. *Bernoulli's equation is applied to

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34. 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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35. A siphon is used

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36. Mach number is the ratio of inertia force to

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37. The maximum velocity in an open channel occurs

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

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

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

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41. *Bernoulli's equation assumes that

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42. A vessel having a depth of 30 cm is filled with water up to a depth of 10 cm from the top level. Find the pressure exerted at a depth of 5 cm and 15 cm from the top of the vessel respectively

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43. *The orifice used for low discharge is

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44. Reynolds number is the ratio of initial force and

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45. 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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46. 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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47. With a clinging nappe of a weir, the excess discharge is

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48. In a venturimeter, the divergent cone is kept

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49. *The upper surface of the notch over which water flows is known as

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50. Hydraulic gradient line and total energy line are

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