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Chemical Engineering :: Process Equipment and Plant Design

  1. The most common standard size of bubble caps used in industrial operation is

  2. A.
    1" dia cap with 0.5" dia riser.
    B.
    6" dia cap with 4" dia riser.
    C.
    8" dia cap with 1" dia riser.
    D.
    4" dia cap with 8" dia riser.

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  3. Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.

  4. A.
    nozzle or rim
    B.
    flared out
    C.
    fluid in
    D.
    ring plate

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  5. In case of a continuous distillation column, increase in reflux ratio may result in the

  6. A.
    lower fixed charges for the column.
    B.
    greater cost for the reboiler heat supply.
    C.
    greater cost for the condenser coolant.
    D.
    all (a), (b) and (c).

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  7. In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

  8. A.
    1
    B.
    8
    C.
    80
    D.
    180

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  9. Thickness of the frame of a plate and frame filter as compared to that of plates is

  10. A.
    less
    B.
    same
    C.
    more
    D.
    either (a) or (b)

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  11. Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?

  12. A.
    Size, shape, orientation and surface of the packing particles.
    B.
    Density and viscosity of fluids.
    C.
    Fluid flow rates.
    D.
    All (a), (b) and (c).

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  13. The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

  14. A.
    0.3 to 0.8
    B.
    1.25 to 3.125
    C.
    3.5 to 7.0
    D.
    8-12

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  15. Rivets are generally specified by the

  16. A.
    head diameter
    B.
    shank diameter
    C.
    overall length
    D.
    none of these

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  17. Length to diameter ratio of most rotary driers is in the range of

  18. A.
    1 to 2
    B.
    4 to 10
    C.
    10 to 20
    D.
    20 to 30

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