2-133 A 75-hp compressor in a facility that operates at full load for 2500 h a year is powered by an electric motor that has an efficiency of 88 percent. If the unit cost of electricity is $0.06/kWh, the annual electricity cost of this compressor is a) $7382 b) $9900 c) $12,780 d) $9533 e) $8389 | |
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