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  • Question

  • The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.


  • Options
  • A. plus
  • B. minus

  • Correct Answer
  • plus 

    • Hydraulics and Fluid Mechanics problems

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    • 1. The specific weight of compressible fluids does not remain constant.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The specific weight is also known as weight density.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 3. When the venturimeter is inclined, then for a given flow it will show __________ reading.

    • Options
    • A. same
    • B. more
    • C. less
      • Discuss
    • 4. A flow is called super-sonic if the

    • Options
    • A. velocity of flow is very high
    • B. discharge is difficult to measure
    • C. Mach number is between 1and 6
    • D. none of these
      • Discuss
    • 5. In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water above the crest of the weir.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.

    • Options
    • A. steady
    • B. streamline
    • C. turbulent
    • D. unsteady
      • Discuss
    • 7. Venturimeter is used to

    • Options
    • A. measure the velocity of a flowing liquid
    • B. measure the pressure of a flowing liquid
    • C. measure the discharge of liquid flowing in a pipe
    • D. measure the pressure difference of liquid flowing between two points in a pipe line
      • Discuss
    • 8. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

    • Options
    • A. Cd(L - nH)2gH
    • B. Cd(L - 0.1nH)2gH3/2
    • C. Cd(L - nH)2gH2
    • D. Cd(L - 0.2nH)2gH5/2
      • Discuss
    • 9. The dynamic viscosity of gases __________ with rise in temperature.

    • Options
    • A. remain unaffected
    • B. increases
    • C. decreases
      • Discuss
    • 10. According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

    • Options
    • A. equal to
    • B. directly proportional
    • C. inversely proportional
      • Discuss

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