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  • Question
  • 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

  • Correct Answer
  • same as 


  • Hydraulics and Fluid Mechanics problems


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    • 1. 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.
    • B.
    • C.
    • D.
    • Discuss
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. A fluid having no viscosity is known as

    • Options
    • A. real fluid
    • B. ideal fluid
    • C. newtonian fluid
    • D. non-newtonian fluid
    • Discuss
    • 7. 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
    • 8. The viscosity of water at 20°C is

    • Options
    • A. one stoke
    • B. one centistroke
    • C. one poise
    • D. one centipoise
    • Discuss
    • 9. 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
    • 10. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss


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