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Chemical Engineering :: Fluid Mechanics

  1. Quicksand is an example of a __________ fluid.

  2. A.
    bingham plastic
    B.
    dilatent
    C.
    Newtonion
    D.
    pseudoplastic

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  3. Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.

  4. A.
    < 4
    B.
    > 4
    C.
    > 12.5
    D.
    < 10

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  5. Differential manometer measures the

  6. A.
    absolute pressure
    B.
    gauge pressure
    C.
    pressure difference
    D.
    pressure gradient

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  7. The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density.

  8. A.
    directly as
    B.
    inversely as square root of
    C.
    inversely as
    D.
    as square of

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  9. Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the

  10. A.
    wall roughness.
    B.
    Reynolds number.
    C.
    both (a) & (b).
    D.
    neither (a) nor (b).

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  11. Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.)

  12. A.
    d
    B.
    d1/3
    C.
    d2
    D.
    d2/3

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  13. Gradually varied flow in open channel is a/an __________ flow.

  14. A.
    steady uniform
    B.
    steady non-uniform
    C.
    unsteady uniform
    D.
    unsteady non-uniform

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  15. The line of action of the buoyant force acts through the

  16. A.
    centroid of the displaced volume of fluid.
    B.
    centre of gravity of a submerged body.
    C.
    centroid of the volume of any floating body.
    D.
    none of these.

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  17. Cavitation in a centrifugal pump can be avoided by keeping the

  18. A.
    inlet pressure high
    B.
    outlet pressure low
    C.
    inlet pressure low
    D.
    outlet pressure high

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  19. Vane anemometer

  20. A.
    is an area meter.
    B.
    is a variable head meter.
    C.
    rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed.
    D.
    none of these.

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