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Consider an operating line touches the equilibrium line, and then the fixed cost becomes

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+1 vote
in Mass Transfer by (37.1k points)
Consider an operating line touches the equilibrium line, and then the fixed cost becomes

(a) Minimum

(b) Infinite

(c) No fixed cost

(d) None of the mentioned

This question was posed to me in an online interview.

My query is from Cost Variance with Reflux Ratio topic in portion Distillation of Mass Transfer

1 Answer

0 votes
by (39.8k points)
The correct choice is (b) Infinite

The best I can explain: If the operating line touches the equilibrium line, obviously the number of trays becomes infinite leads to infinite fixed cost.

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