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Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

  1. Working principle of dead weight pressure gauge tester is based on

  2. A.

     Pascal’s law

    B.

     Dalton’s law of partial pressure

    C.

     Newton’s law of viscosity

    D.

     Avogadro’s hypothesis


  3. The stress-strain relation of the newtoneon fluid is

  4. A.

     linear

    B.

     parabolic

    C.

     hyperbolic

    D.

     inverse type


  5. For pipes, turbulent flow occurs when Reynolds number is

  6. A.

     less than 2000

    B.

     between 2000 and 4000

    C.

     more than 4000

    D.

     less than 4000


  7. Centre of buoyancy always

  8. A.

     coincides with the centre of gravity

    B.

     coincides with the centroid of the volume of fluid displaced

    C.

     remains above the centre of gravity

    D.

     remains below the centre of gravity


  9. Choose the wrong statement

  10. A.

     Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force

    B.

     Viscosity is due primarily to interaction between fluid molecules

    C.

     Viscosity of liquids decreases with in-crease in temperature

    D.

     Viscosity of liquids is appreciably affected by change in pressure


  11. Center of buoyancy is the

  12. A.

     centroid of the displaced volume of fluid

    B.

     center of pressure of displaced volume

    C.

     e.g. of floating body

    D.

     does not exist


  13. Equation of continuity is based on the principle of conservation of

  14. A.

     mass

    B.

     energy

    C.

     momentum

    D.

     none of the above


  15. Bernoulli equation deals with the law of conservation of

  16. A.

     mass

    B.

     momentum

    C.

     energy

    D.

     work


  17. Metacentre is the point of intersection of

  18. A.

     vertical upward force through e.g. of body and center line of body

    B.

     buoyant force and the center line of body

    C.

     mid point between e.g. and center of buoyancy

    D.

     all of the above


  19. Mercury does not wet glass. This is due to property of liquid known as

  20. A.

     adhesion

    B.

     cohesion

    C.

     surface tension

    D.

     viscosity