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Hydraulics and Fluid Mechanics problems

  • 1. The pressure of air __________ with the increase of height from the surface of the earth.

  • Options
  • A. does not change
  • B. decreases
  • C. increases
    • Discuss
  • 2. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity.

  • Options
  • A. Agree
  • B. Disagree
    • Discuss
  • 3. According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)

  • Options
  • A. A x M x m1/2 x i2/3
  • B. A x M x m2/3 x i1/2
  • C. A1/2 x M2/3 x m x i
  • D. A2/3 x M1/3 x m x i
    • Discuss
  • 4. The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.

  • Options
  • A. equal
  • B. directly proportional
  • C. inversely proportional
    • Discuss
  • 5. The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

  • Options
  • A. less than
  • B. more than
    • Discuss
  • 6. The shear stress-strain graph for a non-newtonian fluid is a curve.

  • Options
  • A. Correct
  • B. Incorrect
    • Discuss
  • 7. According to Bernoulli's equation

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 8. An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

  • Options
  • A. weir
  • B. notch
  • C. orifice
  • D. none of these
    • Discuss
  • 9. The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

  • Options
  • A. below
  • B. above
  • C. below
  • D. above
    • Discuss
  • 10. The magnitude of water hammer depends upon the

  • Options
  • A. elastic properties of the pipe material
  • B. elastic properties of the liquid flowing through the pipe
  • C. speed at which the valve is closed
  • D. all of the above
    • Discuss

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