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  • Question

  • The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)


  • Options
  • A. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H2 - H1)
  • B. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H21/2 - H11/2)
  • C. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H23/2 - H13/2)
  • D. Q = The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above Cd x b2g(H22 - H12)

  • Correct Answer
  • Q = Cd x b2g(H23/2 - H13/2) 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The kinematic viscosity is the

    • Options
    • A. ratio of absolute viscosity to the density of the liquid
    • B. ratio of density of the liquid to the absolute viscosity
    • C. product of absolute viscosity and density of the liquid
    • D. product of absolute viscosity and mass of the liquid
      • Discuss
    • 2. The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

    • Options
    • A. equal to
    • B. less than
    • C. more than
      • Discuss
    • 3. Euler's equation in the differential form for the motion of liquids is given by

    • Options
    • A.
    • B.
    • C. ?.dp + g.dz + v.dv = 0
    • D. ?.dp - g.dz + v.dv = 0
      • Discuss
    • 4. The total energy line lies over the hydraulic gradient line by an amount equal to the

    • Options
    • A. pressure head
    • B. velocity head
    • C. pressure head + velocity head
    • D. pressure head - velocity head
      • Discuss
    • 5. The coefficient of viscosity may be determined by

    • Options
    • A. capillary tube method
    • B. orifice type viscometer
    • C. rotating cylinder method
    • D. all of these
      • Discuss
    • 6. The atomic mass of oxygen is

    • Options
    • A. 12
    • B. 14
    • C. 16
    • D. 32
      • Discuss
    • 7. Coal gas is obtained by mixing coal and gas at ambient conditions.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 8. The compression ratio for petrol engines is

    • Options
    • A. 3 to 6
    • B. 5 to 8
    • C. 15 to 20
    • D. 20 to 30
      • Discuss
    • 9. If the value of n = 0 in the equation pvn = C, then the process is called

    • Options
    • A. constant volume process
    • B. adiabatic process
    • C. constant pressure process
    • D. isothermal process
      • Discuss
    • 10. The efficiency of Diesel cycle increases with

    • Options
    • A. decrease in cut-off
    • B. increase in cut-off
    • C. constant cut-off
    • D. none of these
      • Discuss

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