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Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics Comments
  • Question

  • An ideal fluid is frictionless and incompressible.


  • Options
  • A. Correct
  • B. Incorrect

  • Correct Answer
  • Correct 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. In order to measure the flow with a venturimeter, it is installed in

    • Options
    • A. horizontal line
    • B. inclined line with flow upwards
    • C. inclined line with flow downwards
    • D. any direction and in any location
      • Discuss
    • 2. The stability of a dam is checked for

    • Options
    • A. tension at the base
    • B. overturning of the wall or dam
    • C. sliding of the wall or dam
    • D. all of these
      • Discuss
    • 3. Which of the following is an example of laminar flow?

    • Options
    • A. Under ground flow
    • B. Flow past tiny bodies
    • C. Flow of oil in measuring instruments
    • D. all of these
      • Discuss
    • 4. The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)

    • Options
    • A. w x Q x H
    • B. w x Q x hf
    • C. w x Q (H - hf)
    • D. w x Q (H + hf)
      • Discuss
    • 5. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

    • Options
    • A. neutral equilibrium
    • B. stable equilibrium
    • C. unstable equilibrium
    • D. none of these
      • Discuss
    • 6. The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)

    • Options
    • A. Cd x b2gH
    • B. Cd x b2g x H
    • C. Cd x b2g x H3/2
    • D. Cd x b2g x H2
      • Discuss
    • 8. In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.

    • Options
    • A. less than
    • B. more than
      • Discuss
    • 9. According to equation of continuity,

    • Options
    • A. w1a1 = w2a2
    • B. w1v1 = w2v2
    • C. a1v1 = a2v2
    • D. a1/v1 = a2/v2
      • Discuss
    • 10. A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

    • Options
    • A. equal to.
    • B. less than
    • C. more than
      • Discuss

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