Chemical Engineering Plant Economics
Optimum economic pipe diameter for fluid is determined by the

Total cost considerations (pumping cost plus fixed cost of the pipe)
None of these
Density of the fluid
Viscosity of the fluid

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Chemical Engineering Plant Economics
Depreciation

All of these
Costs (on annual basis) are constant when the straight line method is used for its determination
Does figure in the calculation of income tax liability on cash flows from an investment
Is the unavoidable loss in the value of the plant, equipment and materials with lapse in time

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