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Home Chemical Engineering Process Equipment and Plant Design Comments

  • Question
  • Pick out the correct statement.


  • Options
  • A. It is preferred to use a vertical condenser for condensation of vapor from a distillation column without sub-cooling
  • B. Draining of residual liquid on tray during shut down of distillation column is facilitated by weep holes.
  • C. Random packing a packed tower offers the advantage of lower pressure drop and higher throughput of fluids as compared to regular/stacked packing.
  • D. Risers are generally not connected to the plate in a distillation coloumn by bolts, rivets or welding.

  • Correct Answer
  • Risers are generally not connected to the plate in a distillation coloumn by bolts, rivets or welding. 


  • Process Equipment and Plant Design problems


    Search Results


    • 1. Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to

    • Options
    • A. G0.2
    • B. G0.5
    • C. G0.8
    • D. G1.5
    • Discuss
    • 2. In the design of a bag filter, the gas temperature is an important consideration, as it affects the

    • Options
    • A. gas density
    • B. gas viscosity
    • C. fibre selection
    • D. all (a), (b) & (c)
    • Discuss
    • 3. Shortest distance between two tubes is

    • Options
    • A. called tube pitch.
    • B. called tube clearance.
    • C. more in case of triangular pitch as compared to square pitch of tube layout.
    • D. none of these.
    • Discuss
    • 4. The dust collection efficiency of electrostatic precipitator increases with increase in the

    • Options
    • A. gas flow rate.
    • B. electrode area.
    • C. both (a) & (b).
    • D. neither (a) nor (b).
    • Discuss
    • 5. In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ? = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier cross-section H = hold up of solid.)

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 6. __________ dished head is the strongest of all.

    • Options
    • A. Hemispherical
    • B. Elliptical
    • C. Torispherical
    • D. none of these
    • Discuss
    • 7. In the design of a shell and tube heat exchanger, the corrosion allowance

    • Options
    • A. need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc.
    • B. for carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm.
    • C. for internal cover and tube sheet is provided on both the sides.
    • D. all (a), (b) & (c).
    • Discuss
    • 8. Flanges are connected to pipes by

    • Options
    • A. screwing
    • B. welding
    • C. brazing
    • D. all (a), (b) and (c)
    • Discuss
    • 9. __________ shaped roof is most commonly used for cylindrical tanks.

    • Options
    • A. Cone
    • B. Dome
    • C. Umbrella
    • D. Flat
    • Discuss
    • 10. Hold up of material in a operating rotary drier is in the range of

    • Options
    • A. 0.05 to 0.15
    • B. 0.25 to 0.50
    • C. 0.5 to 0.8
    • D. 0.8 to 0.9
    • Discuss


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