Chemical Engineering Plant Economics
'P' is the investment made on an equipment, 'S' is its salvage value and 'n is the life of the equipment in years. The depreciation for rath year by the sum-of years digit method will be

(P - S)/n
2(n - m + 1)/n(n + 1) x (P - S)
1 - (P/S)1/m
M/n x (P - S)

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Chemical Engineering Plant Economics
Payback period

Is affected by the variation in earnings after the recovery of the investment
Is the length of time over which the earnings on a project equals the investment
And economic life of a project are the same
All of these

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Chemical Engineering Plant Economics
Fixed capital investment of a chemical plant is the total amount of money needed to supply the necessary plant and manufacturing facilities plus the working capital for operation of the facilities. Which of the following components of fixed capital investment requires minimum percentage of it?

Electrical installation cost
Equipment insulation cost
Cost for piping
Equipment installation cost

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