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Hydraulics and Fluid Mechanics problems

  • 1. The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy.

  • Options
  • A. Agree
  • B. Disagree
    • Discuss
  • 2. The flow of water through the hole in the bottom of a wash basin is an example of

  • Options
  • A. steady flow
  • B. uniform flow
  • C. free vortex
  • D. forced vortex
    • Discuss
  • 3. The velocity at which the laminar flow stops, is known as

  • Options
  • A. velocity of approach
  • B. lower critical velocity
  • C. higher critical velocity
  • D. none of these
    • Discuss
  • 4. The ratio of the inertia force to the gravity force is called Froude number.

  • Options
  • A. Agree
  • B. Disagree
    • Discuss
  • 5. A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is
    Mechanical Engineering Hydraulics and Fluid Mechanics: A vertically immersed surface is shown in the below figure. The distance of its centre of pressure f

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 6. The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 7. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

  • Options
  • A. 2.89 kN
  • B. 8.29 kN
  • C. 9.28 kN
  • D. 28.9 kN
    • Discuss
  • 8. A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

  • Options
  • A. it is easier to see through the glass tube
  • B. glass tube is cheaper than a metallic tube
  • C. it is not possible to conduct this experiment with any other tube
  • D. all of the above
    • Discuss
  • 9. A manometer can be used to measure vacuum pressures.

  • Options
  • A. Agree
  • B. disagree
    • Discuss
  • 10. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss

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