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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. *Capillarity of water is

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2. *Bernoulli's equation assumes that

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3. For any channel section, the specific energy increase with

4 / 50

4. Poise is the unit of

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5. Pick up the correct statement from the following

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

7 / 50

7. Liquids or fluids

8 / 50

8. A siphon is used

9 / 50

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

10 / 50

10. *Manometers are used to measure

11 / 50

11. *The orifice used for low discharge is

12 / 50

12. Specific energy of a flowing fluid per unit weight is equal to

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

14 / 50

14. *Surface tension is the force

15 / 50

15. The attraction among different particles of the same material is

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16. Falling drops of water become spheres due to

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

18 / 50

18. The numerical value of vorticity is.....of the rotation

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

20 / 50

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

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

22 / 50

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

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

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

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25. Weber number is the ratio of inertia force to

26 / 50

26. The upward water pressure at the base of the structure is called

27 / 50

27. *Uniform flow is said to occur when

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28. *The types of instrument used to measure low pressure with accuracy is

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

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30. *A flow is said to be laminar when

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

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32. In an open channel flow

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

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

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35. Hydraulic gradient line for an open flow channel is

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36. Which of the following quantities are dimensionless?

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37. 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.

38 / 50

38. Reynolds number is the ratio of initial force and

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

40 / 50

40. The total energy of a liquid in motion is equal to:

41 / 50

41. The term z is known as

42 / 50

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

43 / 50

43. "Manning's formula is used for

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

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

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

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47. 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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48. *Water cushion is used to

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49. 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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50. The Manning's formula for flow in an open channel is given by

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