Chemical Engineering Plant Economics
For a given fluid, as the pipe diameter increases, the pumping cost

Increases
Remains the same
Decreases
May increase or decrease, depending upon whether the fluid is Newtonian or non-Newtonian

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Chemical Engineering Plant Economics
An annuity is a series of equal payments occuring at equal time intervals, and this amount includes the sum of all payments plus interest, if allowed to accumulate at a definite rate of interest from the time of initial payment to the end of annuity term. Ordinary annuity is used in the calculation of the

Cash ratio
Manufacturing cost
Discrete compound interest
Depreciation by sinking fund method

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Chemical Engineering Plant Economics
Chemical engineering plant cost index is used for finding the present cost of a particular chemical plant, if the cost of similar plant at some time in the past is known. The present cost of the plant = original cost x (index value/(index value at original cost was obtained) The most major component of this cost index is

Pumps and compressor
Fabricated equipment and machinery
Electrical equipments and material
Process instruments and control

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