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  • Question

  • According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)


  • Options
  • A. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end cont Cd(L - nH)2gH
  • B. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end cont Cd(L - 0.1nH)2gH3/2
  • C. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end cont Cd(L - nH)2gH2
  • D. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end cont Cd(L - 0.2nH)2gH5/2

  • Correct Answer
  • Cd(L - 0.1nH)2gH3/2 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
      • Discuss
    • 4. The specific weight of compressible fluids does not remain constant.

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

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 6. The dynamic viscosity of gases __________ with rise in temperature.

    • Options
    • A. remain unaffected
    • B. increases
    • C. decreases
      • Discuss
    • 7. 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
    • 8. Bernoulli's equation is applied to

    • Options
    • A. venturimeter
    • B. orifice meter
    • C. pitot tube
    • D. all of these
      • Discuss
    • 9. The velocity at which the turbulent flow starts is known as higher critical velocity.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 10. The property of a liquid which enables it to resist tensile stress is called its surface tension.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss

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