The daily power consumption profile of a customer is tabulated below, where the kilowatt loads are average

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The daily power consumption profile of a customer is tabulated below, where the kilowatt loads are average over the period listed and kilovoltampere demand meter readings are peak over 15-min intervals during the period. The utility tariff to this consumer is 15 cents/kWh plus $18 per peak kilovolt-ampere demand over the month. In a 30-day month, determine the monthly utility bill: 

(1) With the present usage pattern and 

(2) With the pf improved to unity.

Time Period 12 a.m.-3 a.m. 3 a.m.-8 a.m. 8 a.m.-10 a.m. 10 a.m.-3 p.m. 3 p.m.-9 p.m. 9 p.m.-12 p.m. Power

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