Pick out the wrong statement?

Process Equipment and Plant Design 30/07/2021

A. If sufficient residence time (around 8 seconds) is not provided to the downcoming liquid in
the downcomer, it may entrain some vapour
B. The liquid head in the downcomer should not be greater than one half the plate spacing to
avoid flooding
C. The discharge end of the downcomer must project far enough into the tray liquid so that no
gas bubbles can enter the open end and by pass the bubble caps
D. None of these

Related Mcqs:

    Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than ______________ kilolitres?
    A. 20 B. 30 C. 45 D. 85...
    It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than _________________?
    A. 0.99 B. 0.95 C. 0.80 D. 0.55...
    The circumferential (hoop) stress in a thin walled cylindrical vessel under internal pressure is______________________?
    A. pd/2t B. pd/4t C. pd/t D. pd/3t...
    The distance between the centres of a rivet hole to the nearest edge of the plate is called _________________?
    A. Pitch B. Margin C. Back pitch D. None of these...
    Weep holes provided in the plates of a distillation column ____________________?
    A. Facilitate draining out liquid from a tray when the unit is not in operation B. Are normally located near the overflow weir so that any delivery of liquid during operation follows approximately the same path as the overflow fluid C. Must be large enough (usually 1/4″ to 5/8″ dia) to prevent plugging but should … Weep holes provided in the plates of a distillation column ____________________?Read More...

Leave a Reply

Your email address will not be published. Required fields are marked *