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Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

  1. According to Bernoulli’s equation for steady ideal fluid flow

  2. A.

     principle of conservation of mass holds

    B.

     velocity and pressure are inversely proportional

    C.

     total energy is constant throughout

    D.

     the energy is constant along a stream-line but may vary across streamlines


  3. When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies

  4. A.

     linearly with radial distance

    B.

     as the square of the radial distance

    C.

     inversely as the square of the radial distance

    D.

     inversely as the radial distance


  5. The density of water is 1000 kg/m3 at

  6. A.

     0°C

    B.

     0°K

    C.

     4°C

    D.

     20°C


  7. Which of the following is demensionless

  8. A.

     specific weight

    B.

     specific volume

    C.

     specific speed

    D.

     specific gravity


  9. A large Roynold number is indication of

  10. A.

     smooth and streamline flow

    B.

     laminar flow

    C.

     turbulent flow

    D.

     highly turbulent flow.


  11. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

  12. A.

     2.4 m above the hydraulic gradient

    B.

     6.4 m above the hydraulic gradient

    C.

     10.0 m above the hydraulic gradient

    D.

     5.0 above the hydraulic gradient


  13. The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

  14. A.

     surface tension

    B.

     co-efficient of viscosity

    C.

     viscosity

    D.

     osmosis


  15. Ay between two stream lines represents

  16. A.

     velocity

    B.

     discharge

    C.

     head

    D.

     pressure


  17. The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

  18. A.

     steady flow

    B.

     uniform flow

    C.

     incompressible flow

    D.

     frictionless flow


  19. The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

  20. A.

     at the centroid of the submerged area

    B.

     always above the centroid of the area

    C.

     always below the centroid of the area

    D.

     none of the above