(Answered) A 70 efficient compressor delivers air to a pneumatic

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A 70% efficient compressor delivers air to a pneumatic system at 690 kPa gage and 6 standard m3/min. The efficiency of the electric motor driving the compressor is 90%, and the compressor operates 4000 hours per year. If the cost of electricity is $0.10/kWh, determine the cost of electricity per year.

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