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  • Question

  • The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)


  • Options
  • A. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is giv
  • B. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is giv
  • C. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is giv
  • D. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is giv

  • Correct Answer
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    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

    • Options
    • A. 2gH
    • B. H2g
    • C. 2gH
    • D. 2gH
      • Discuss
    • 2. The ratio of the inertia force to the elastic force is called

    • Options
    • A. Reynold's number
    • B. Froude's number
    • C. Weber's number
    • D. Mach number
      • Discuss
    • 3. The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (?) rad/s about its vertical axis, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. The mercury does not wet the glass. This is due to the property of the liquid known as

    • Options
    • A. cohesion
    • B. adhesion
    • C. viscosity
    • D. surface tension
      • Discuss
    • 5. The velocity of the liquid flowing through the divergent portion of a venturimeter

    • Options
    • A. remains constant
    • B. increases
    • C. decreases
    • D. depends upon mass of liquid
      • Discuss
    • 6. The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation.

    • Options
    • A. same as
    • B. less than
    • C. more than
      • Discuss
    • 7. A fluid having no viscosity is known as

    • Options
    • A. real fluid
    • B. ideal fluid
    • C. newtonian fluid
    • D. non-newtonian fluid
      • Discuss
    • 8. The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, ? = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 9. The viscosity of water at 20°C is

    • Options
    • A. one stoke
    • B. one centistroke
    • C. one poise
    • D. one centipoise
      • Discuss
    • 10. The pressure of air __________ with the increase of height from the surface of the earth.

    • Options
    • A. does not change
    • B. decreases
    • C. increases
      • Discuss

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