Reactive power (Pr) in a capacitor is defined as the rate at which a capacitor stores or returns energy and is measured in:
A) watts reactive. B) volt-ampere reactive.
C) volts per time constant. D) current per time constant.
B
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What will be an ideal response?
Freeport McMoRan engineers estimated that the capital investment necessary for recovering valuable metals (nickel, silver, gold, etc.) from a copper refinery’s wastewater would be $150 million. The equipment is expected to have a useful life of 10 years with no salvage value. The amount of metal currently discharged in the wastewater is 12,500 pounds per year. The recovered metals are expected to have a selling price of $250 per pound. The efficiency relation of the recovery operation is represented by X 0.5, where X represents the efficiency in percentage. What value of X is necessary for the company to break even? Assume i = 10% per year.
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What will be an ideal response?
Estimate the amount of electricity that is projected to be generated from petroleum in 2023.
Use the data from the accompanying table shown below.
