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Chemical Engineering :: Fluid Mechanics

  1. Which of the following is a Newtonian fluid?

  2. A.
    Rubber latex
    B.
    Sewage sludge
    C.
    Quicksand
    D.
    Non-colloidal solution

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  3. Which of the following valves will incur maximum pressure drop for the same discharge of water ?

  4. A.
    Globe valve
    B.
    Gate valve
    C.
    Needle valve
    D.
    Butterfly valve

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  5. Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.

  6. A.
    less than
    B.
    more than
    C.
    same as
    D.
    none of these

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  7. In deriving Bernoulli's equation, fluid is assumed to be

  8. A.
    incompressible, frictionless, steady, along a streamline.
    B.
    uniform, steady, incompressible, along a streamline.
    C.
    steady, density being pressure dependent, frictionless.
    D.
    none of these.

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  9. Unit of mass velocity is

  10. A.
    kg/hr
    B.
    kg/m2. hr
    C.
    kg/m2
    D.
    kg/m3. hr

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  11. With increase in molecular weight of the gas, the head developed by a centrifugal compressor will

  12. A.
    decrease
    B.
    increase
    C.
    remain same
    D.
    unpredictable

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  13. Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).

  14. A.
    H
    B.
    12.6 H
    C.
    13.6 H
    D.
    14.6 H

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  15. The boundary layer thickness at a given section along a flat plate __________ with increasing Reynold's number.

  16. A.
    increases
    B.
    decreases
    C.
    remains same
    D.
    may increase or decrease

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  17. Low specific speed of a pump implies that, it is a/an __________ pump.

  18. A.
    axial flow
    B.
    centrifugal
    C.
    mixed flow
    D.
    none of these

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  19. Pressure drop for laminar fluid flow through a circular pipe is given by

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