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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. Mass density of liquid (p) is given by

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

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3. *Water cushion is used to

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4. *Chazy's formula is given by

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

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

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

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

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

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

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11. The minimum head loss will occur in

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

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13. *The pressure in pipe flow is normally

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

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

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

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17. *Losses are more in

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18. Head loss due to friction in a pipe is given by the Darcy-Weisbach equation

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

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20. *1 m head is equivalent to

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

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22. If the Froude number in open channel flow is less than 1.0, the flow is called

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23. 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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24. The error 1% in measuring H will produce a

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

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

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27. If the fluid particles move in a zig-zag way, the flow is called

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28. *Bernoulli's equation assumes that

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29. Mach number is the ratio of inertia force to

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30. *Stoke is the unit of

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31. *Which of the following statements is valid?

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32. In the case of leveling by a level pipe, the level is indicated by

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33. Liquids

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34. A steady uniform flow is through a

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

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

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38. The maximum velocity in an open channel occurs

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

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

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41. 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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42. *The discharge through a trapezoidal channel is maximum when

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43. *Venturimeter is used to measure

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44. The viscosity of liquids varies with temperature

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45. *Surface tension is the force

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46. *The magnitude of water hammer depends upon

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47. Hydrostatic pressure on a dam depends upon its

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48. In the case of vortex flow, the level of water at the center is

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49. 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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50. *The hydraulic ram is a device

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