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

  • The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Agree 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The surface tension of mercury at normal temperature is __________ that of water.

    • Options
    • A. same as
    • B. lower than
    • C. higher than
      • Discuss
    • 2. A differential manometer is used to measure

    • Options
    • A. atmospheric pressure
    • B. pressure in pipes and channels
    • C. pressure in venturimeter
    • D. difference of pressures between two points in a pipe
      • Discuss
    • 3. The volume of a fluid __________ as the pressure increases.

    • Options
    • A. remains same
    • B. decreases
    • C. increases
      • Discuss
    • 4. The hydraulic gradient line is always parallel to the centre line of the pipe.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 5. The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ? = Density of the fluid)

    • Options
    • A. K.?
    • B. K/?
    • C. ?/K
    • D. K.?
      • Discuss
    • 6. When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.

    • Options
    • A. sum
    • B. difference
    • C. arithmatic mean
    • D. geometric mean
      • Discuss
    • 7. Coefficient of velocity is defined as the ratio of

    • Options
    • A. actual velocity of jet at vena contracta to the theoretical velocity
    • B. area of jet at vena contracta to the area of orifice
    • C. actual discharge through an orifice to the theoretical discharge
    • D. none of the above
      • Discuss
    • 8. A flow is called sonic, if the Mach number is unity.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 9. The property of a liquid which controls its rate of flow is called viscosity.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,

    • Options
    • A. 1%
    • B. 1.5%
    • C. 2%
    • D. 2.5%
      • Discuss

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