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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. *To measure atmospheric pressure, we use

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

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3. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as:

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4. *Viscosity of a liquid

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5. *Bernoulli's equation is applied to

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6. *Venturimeter is used to measure

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7. Cavitations is collapsed by

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

9 / 50

9. For the laminar flow through a circular pipe, the maximum velocity is

10 / 50

10. *Molecules of fluids get attracted due to

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11. 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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12. Hooke's law for solids is analogous to

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13. 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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14. 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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15. A substance which deforms continuously under the action of shear stress is called

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

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17. In the case of a broad-crested weir, the depth of water h at the end of the still is given by

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

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

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

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

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22. In an open channels the analysis of a sugar is done by using

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23. *The orifice used for low discharge is

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24. In fluids, steady flow occurs when

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25. Practical fluids possess

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26. *The magnitude of water hammer depends upon

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27. A rise or fall of liquid in a glass tube of a very small diameter when dipped is

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28. Water hammer is a phenomenon that occurs

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29. Mouthpieces are used to measure

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30. *Chazy's formula is given by

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

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

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

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

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35. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8)

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36. *A flow is said to be laminar when

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

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38. The viscosity of liquids varies with temperature

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39. *Uniform flow is said to occur when

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

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41. The two depths at which the specific energy is the same are called

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

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43. The term P/pg is known as

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44. From a nozzle exposed to the atmosphere, the liquid jet traverses

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

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

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

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49. A steady uniform flow is through a

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50. The flow in which each liquid particle has a definite path is called

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