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  • Question

  • When an internal mouthpiece is running full, the discharge through the mouthpiece is twice the discharge when it is running free.


  • Options
  • A. Correct
  • B. Incorrect

  • Correct Answer
  • Incorrect 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The coefficient of discharge is the ratio of dieoretical discharge to the actual discharge through an orifice.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The specific gravity of an oil whose specific weight is 7.85 kN/m3, is

    • Options
    • A. 0.8
    • B. 1
    • C. 1.2
    • D. 1.6
      • Discuss
    • 3. In an internal mouthpiece, if the jet after contraction expands and fills up the whole mouthpiece, then the mouthpiece is said to be running free.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

    • Options
    • A. 0.34 times
    • B. 0.67 times
    • C. 0.81 times
    • D. 0.95 times
      • Discuss
    • 6. A pitot tube is used to measure the

    • Options
    • A. velocity of flow at the required point in a pipe
    • B. pressure difference between two points in a pipe
    • C. total pressure of liquid flowing in a pipe
    • D. discharge through a pipe
      • Discuss
    • 7. The pressure at a point 4 m below the free surface of water is

    • Options
    • A. 19.24 kPa
    • B. 29.24 kPa
    • C. 39.24 kPa
    • D. 49.24 kPa
      • Discuss
    • 8. An average value of coefficient of velocity is

    • Options
    • A. 0.62
    • B. 0.76
    • C. 0.84
    • D. 0.97
      • Discuss
    • 9. The velocity of flow is same at all points in the cross-section of a channel.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

    • Options
    • A. A m x i
    • B. C m x i
    • C. AC m x i
    • D. mi A x C
      • Discuss

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