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Chemical Engineering :: Fluid Mechanics

  1. Which of the following assumptions enables the Euler's equation of motion to be integrated?

  2. A.

     The fluid is incompressible

    B.

     The fluid is non-viscous

    C.

     The continuity equation is satisfied

    D.

     The flow is rotational and incompressible

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  3. Flow measurement in an open channel is done by a/an

  4. A.

     Venturimeter

    B.

     Orificemeter

    C.

     Weir

    D.

     Rotameter

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  5. Foot valves provided in pumps are __________ valves.

  6. A.

     Relief

    B.

     Three/four way

    C.

     Pressure reducing

    D.

     Directional control

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  7. Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller.

  8. A.

     Radius of

    B.

     Speed of

    C.

     Fluid velocity leaving

    D.

     None of these

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  9. In case of a centrifugal pump, the theoretical head developed is dependent on the __________ the impeller.

  10. A.

     Speed of

    B.

     Diameter of

    C.

     Fluid velocity leaving

    D.

     All of the above

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  11. N. second/m² is

  12. A.

     The S.I. unit of dynamic viscosity

    B.

     The S.I. unit of kinematic viscosity

    C.

     Equivalent to one poise

    D.

     Equivalent to one stoke

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  13. Discharge in laminar flow through a pipe varies

  14. A.

     As the square of the radius

    B.

     Inversely as the pressure drop

    C.

     Inversely as the viscosity

    D.

     As the square of the diameter

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  15. In the complete turbulence zone (in rough pipes), the

  16. A.

     Rough and smooth pipes have the same friction factor

    B.

     Laminar film covers the roughness projections

    C.

     Friction factor depends upon NRe only

    D.

     Friction factor is independent of the relative roughness

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  17. What is the speed of sound (m/sec) in ordinary water?

  18. A.

     1500

    B.

     330

    C.

     1000

    D.

     3000

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  19. The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids

  20. A.

     Having high viscosities

    B.

     Moving at low velocities

    C.

     Both A and B

    D.

     Neither A nor B

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