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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. The force of buoyancy is always __________ the weight of the liquid displaced by the body.

  2. A.

     Equal to

    B.

     Less than

    C.

     More than

    D.

     None of these


  3. For a floating body to be in stable equilibrium, its metacentre should be

  4. A.

     Below the center of gravity

    B.

     Below the center of buoyancy

    C.

     Above the center of buoyancy

    D.

     Above the center of gravity


  5. The point at which the resultant pressure on an immersed surface acts, is known as

  6. A.

     Centre of gravity

    B.

     Centre of depth

    C.

     Centre of pressure

    D.

     Centre of immersed surface


  7. A turbine pump is basically a centrifugal pump equipped additionally with

  8. A.

     Adjustable blades

    B.

     Backward curved blades

    C.

     Vaned diffusion casing

    D.

     Inlet guide blades


  9. When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

  10. A.

     A triangle

    B.

     A paraboloid

    C.

     An ellipse

    D.

     None of these


  11. In one dimensional flow, the flow

  12. A.

     Is steady and uniform

    B.

     Takes place in straight line

    C.

     Takes place in curve

    D.

     Takes place in one direction


  13. The resultant of all normal pressures acts

  14. A.

     At C.G. of body

    B.

     At center of pressure

    C.

     Vertically upwards

    D.

     At metacentre


  15. The stability of a dam is checked for

  16. A.

     Tension at the base

    B.

     Overturning of the wall or dam

    C.

     Sliding of the wall or dam

    D.

     All of these


  17. Any change in load is adjusted by adjusting following parameter on turbine

  18. A.

     Net head

    B.

     Absolute velocity

    C.

     Blade velocity

    D.

     Flow


  19. Flow of water in a pipe about 3 meters in diameter can be measured by

  20. A.

     Orifice plate

    B.

     Venturimeter

    C.

     Rotameter

    D.

     Pitot tube