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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Aluminium
Stainless steel
Copper
Carbon steel

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Complete back mixing
Eddy diffusivity = 0
Plug flow
Laminar flow

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Process Equipment and Plant Design
In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.

2.5
12.5
17.5
5

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Process Equipment and Plant Design
What is the value of 'q' for saturated vapor feed to a distillation column ?(where q = fraction of the feed stream that is liquid.)

1
> 1

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Process Equipment and Plant Design
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers?

Equal to tube O.D
Equal to tube I.D
6.5 mm
6.5 cms

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Static submergence
Length of straight rectangular weir on cross-flow tray
Allowable vapour velocity
Number of theorectical plates

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