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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. For any channel section, the specific energy increase with

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2. *Surface tension is the force

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3. *Losses are more in

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4. If the velocity in a fluid flow changes with respect to the length of the direction of the flow, it is called

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5. A substance which deforms continuously under the action of shear stress is called

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

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

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

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10. 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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11. *Pressure within a soap bubble is

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12. *If a pitot tube is placed with its nose facing sideways, the liquid

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

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

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15. An intensifier is used to increase

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16. One horsepower is equal to

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17. The depth of flow after the hydraulic jump is

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

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

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20. The term z is known as

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

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

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23. 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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24. 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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25. The water immediately downstream of the conduit or weir is called

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26. *Hydraulic gradient line (except siphon)

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27. *An ideal flow of a liquid obeys

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28. *The magnitude of capillary rise is more in:

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29. 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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30. The ratio of the mean velocity to the surface velocity in open channels is equal to

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31. *The float method is used to measure

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32. *Bernoulli's equation assumes that

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

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34. *Venturimeter is used to measure

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

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36. *Rotameter is used for measuring

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37. *The hydraulic radius is equal to

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38. The most efficient channel section is

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39. *Barometers are used to measure

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40. *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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41. *An independent mass of a fluid does not possess

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42. Reynolds number is the ratio of initial force and

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43. Hydraulic gradient line for an open flow channel is

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44. Total pressure on the top of a closed cylindrical vessel completely filled with liquid is directly proportional to

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45. *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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46. "Maximum efficiency of power transmission through a pipe is

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47. Poise is the unit of

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48. Rotation is defined as the movement of a fluid element in such a way that both of its axes rotate in...

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49. In an open channel flow

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

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