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  • Question

  • 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. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above Cd x b2gH
  • B. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above Cd x b2g x H
  • C. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above Cd x b2g x H3/2
  • D. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above Cd x b2g x H2

  • Correct Answer
  • Cd x b2g x H3/2 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. 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
    • 2. An ideal fluid is frictionless and incompressible.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. 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
    • 7. According to equation of continuity,

    • Options
    • A. w1a1 = w2a2
    • B. w1v1 = w2v2
    • C. a1v1 = a2v2
    • D. a1/v1 = a2/v2
      • Discuss
    • 8. 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
    • 9. When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The pressure measured with the help of a piezometer tube is in

    • Options
    • A. N/mm2
    • B. N/m2
    • C. head of liquid
    • D. all of these
      • Discuss

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