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Chemical Engineering :: Fluid Mechanics

  1. A relief valve

  2. A.

     Provides back pressure for a cylinder

    B.

     Unloads a pump

    C.

     Is a directional control valve

    D.

     None of these

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  3. A streamline is

  4. A.

     The line connecting the mid-points of flow cross-sections

    B.

     Defined for uniform flow only

    C.

     Drawn normal to the velocity vector at every point

    D.

     Always the path of a particle

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  5. A tube is specified by its

  6. A.

     Thickness only

    B.

     Outer diameter only

    C.

     Thickness & outer diameter both

    D.

     Inner diameter

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  7. The specific speed of a pump is defined as the speed of a unit of such a size, that it

  8. A.

     Delivers unit discharge at unit head

    B.

     Requires unit power for unit head

    C.

     Delivers unit discharge at unit power

    D.

     None of these

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  9. Which of the following may be termed as a variable orifice flowmeter?

  10. A.

     Rotameter

    B.

     Pitot tube

    C.

     V-notch

    D.

     All of the above

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  11. A venturimeter measures the

  12. A.

     Velocity head

    B.

     Pressure

    C.

     Point velocity

    D.

     None of these

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  13. Potential function is applicable only for __________ flow.

  14. A.

     Irrotational

    B.

     Turbulent

    C.

     Steady

    D.

     None of these

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  15. A floating/submerged body is always stable, if its centre of gravity

  16. A.

     Lies above its centre of buoyancy

    B.

     And centre of buoyancy coincide

    C.

     Lies below its centre of buoyancy

    D.

     Lies above its meta centre

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  17. The fluid property which matters for fall-ing rain drops to acquire spherical shape is its

  18. A.

     Pressure

    B.

     Height of descend

    C.

     Viscosity

    D.

     Surface tension

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  19. Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump.

  20. A.

     Reciprocating

    B.

     Plunger

    C.

     Electromagnetic

    D.

     Gear

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