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Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics Comments
  • Question

  • An average value of coefficient of velocity is


  • Options
  • A. 0.62
  • B. 0.76
  • C. 0.84
  • D. 0.97

  • Correct Answer
  • 0.97 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
      • Discuss
    • 4. The coefficient of discharge is the ratio of dieoretical discharge to the actual discharge through an orifice.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. 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
    • 6. The velocity of flow is same at all points in the cross-section of a channel.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. 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
    • 8. Surface tension force is the product of surface tension per unit length and cross-sectional area of flow.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 9. The coefficient of discharge for an external mouthpiece depends upon

    • Options
    • A. velocity of liquid
    • B. pressure of liquid
    • C. area of mouthpiece
    • D. length of mouthpiece
      • Discuss
    • 10. A vessel of 4 m3 contains an oil which weighs 30 kN. The specific weight of the oil is

    • Options
    • A. 4.5 kN/m3
    • B. 6 kN/m3
    • C. 7.5 kN/m3
    • D. 10 kN/m3
      • Discuss

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