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Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

  1. The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

  2. A.

     center of gravity

    B.

     center of buoyancy

    C.

     center of pressure

    D.

     metacentre


  3. The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

  4. A.

     meta center

    B.

     center of pressure

    C.

     center of buoyancy

    D.

     center of gravity


  5. When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is

  6. A.

     L/4

    B.

     L/3

    C.

     L/2

    D.

     L


  7. The property of fluid by virtue of which it offers resistance to shear is called

  8. A.

     surface tension

    B.

     adhesion

    C.

     cohesion

    D.

     viscosity


  9. Falling drops of water become spheres due to the property of

  10. A.

     adhesion

    B.

     cohesion

    C.

     surface tension

    D.

     viscosity


  11. Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is

  12. A.

     less than d

    B.

     between d and 1.5 d

    C.

     between 1.5 d and 2d

    D.

     greater than 2d


  13. The flow in which conditions do not change with time at any point, is known as

  14. A.

     one dimensional flow

    B.

     uniform flow

    C.

     steady flow

    D.

     turbulent flow


  15. The fluid forces considered in the Navier Stokes equation are

  16. A.

     gravity, pressure and viscous

    B.

     gravity, pressure and turbulent

    C.

     pressure, viscous and turbulent

    D.

     gravity, viscous and turbulent


  17. The tendency of a liquid surface to contract is due to the following property

  18. A.

     cohesion

    B.

     adhesion

    C.

     viscosity

    D.

     surface tension


  19. In case of an airfoil, the separation of flow occurs

  20. A.

     at the extreme rear of body

    B.

     at the extreme front of body

    C.

     midway between rear and front of body

    D.

     any where between rear and front of body depending upon Reynolds number