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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 difference between the total energy line and the hydraulic gradient line is

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2. *If the velocity in a fluid flow does not change with respect to the length of the direction of flow, it is called

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3. *The continuity equation deals with the law of conservation of

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4. *The rate of flow through a venturimeter varies as

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5. Super-critical flow occurs in

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6. *A flow is said to be laminar when

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7. Which of the following has the highest coefficient of discharge:

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

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

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10. *Which of the following statements is valid?

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11. *Viscosity of a liquid

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

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

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

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16. *The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream, causing a distinct rise of the liquid surface, is

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

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18. *Cavitations is caused by

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

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

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

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23. Water hammer is a phenomenon that occurs

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

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25. 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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26. A triangular notch is preferred to a rectangular notch because

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27. The head of water representing in the case of HGL line is known as

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

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29. *Surface float is used to measure

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30. In an inclined position, a venturimeter records

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31. *Orifice-meter is used to measure:

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

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33. Pick up the correct statement from the following

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34. Liquids

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

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36. Critical depth (he) is given by (where q= rate of flow per unit width of channel)

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

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

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39. Specific weight of liquid

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40. *The discharge through a rectangular channel is maximum when

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

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42. The thickness of a sharp-crested weir is kept less than

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43. Hydraulic gradient line for an open flow channel is

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44. The minimum head loss will occur in

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

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47. A fluid particle may possess the displacement of

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

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49. A siphon is used

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50. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

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