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

  • The total energy of a liquid particle in motion is equal to


  • Options
  • A. pressure energy + kinetic energy + potential energy
  • B. pressure energy - (kinetic energy + potential energy)
  • C. potential energy - (pressure energy + kinetic energy
  • D. kinetic energy - (pressure energy + potential energy)

  • Correct Answer
  • pressure energy + kinetic energy + potential energy 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. A flow through a long pipe at decreasing rate is called __________ uniform flow.

    • Options
    • A. steady
    • B. unsteady
      • Discuss
    • 2. The factional resistance of a pipe varies approximately with __________ of the liquid.

    • Options
    • A. pressure
    • B. velocity
    • C. square of velocity
    • D. cube of velocity
      • Discuss
    • 3. The point at which the resultant pressure on an immersed surface acts, is known as

    • Options
    • A. centre of gravity
    • B. centre of depth
    • C. centre of pressure
    • D. centre of immersed surface
      • Discuss
    • 4. If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

    • Options
    • A. 0.417 H5/2
    • B. 1.417 H5/2
    • C. 4.171 H5/2
    • D. 7.141 H5/2
      • Discuss
    • 5. According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. 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
    • 7. The hydraulic gradient line is always parallel to the centre line of the pipe.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 8. The volume of a fluid __________ as the pressure increases.

    • Options
    • A. remains same
    • B. decreases
    • C. increases
      • Discuss
    • 9. 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
    • 10. The surface tension of mercury at normal temperature is __________ that of water.

    • Options
    • A. same as
    • B. lower than
    • C. higher than
      • Discuss

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