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Process Equipment and Plant Design

Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Slope & length
Flights arrangement
Rpm
All of these

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Process Equipment and Plant Design
Which of the following factors determine the amount of entrainment in a distillation column?

Depth of liquid above the bubble cap slots
Vapour velocity in the volume between the plates
Plate spacing
All of these

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Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

High latent heat
Non-corrosive condensate
High film co-efficient
Low cost

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Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

More than
Not less than one fifth of
Both B and C
Not greater than

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Process Equipment and Plant Design
In a shell and tube heat exchanger, tube side __________ of the mass velocity.

Pressure drop is proportional to the square
Heat transfer co-efficient is proportional to 0.8th power
Both A & B
Neither A nor B

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Process Equipment and Plant Design
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

2 to 2.5
0.5 to 1
1.5 to 2
1 to 1.5

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