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36 An industrial assembly hall is continuously lit by one hundred 40-W mercury vapor lamps in parallel and supplied by a 120 V rms, 60-Hz source. The power factor seen by the source is 0.65, which is so low that a 25 percent penalty is applied at billing. If the average price of 1 kWh is $0.05 and the average cost of a capacitor is $50 per mF, compute how long it will take before the billing penalty equals the cost of the capacitor needed to correct the power factor to 0.85.

36 An industrial assembly hall is continuously lit by one hundred 40-W mercury vapor lamps in parallel and supplied by a 120 V rms, 60-Hz source. The power factor seen by the source is 0.65, which is so low that a 25 percent penalty is applied at billing. If the average price of 1 kWh is $0.05 and the average cost of a capacitor is $50 per mF, compute how long it will take before the billing penalty equals the cost of the capacitor needed to correct the power factor to 0.85.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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7.36 An industrial assembly hall is continuously lit by price of 1 kWh is $0.05 and the average cost of a capacitor is $50 per mF, compute how long it will take 25 percent penalty is applied at billing. If the average and supplied by a 120 V rms, 60-Hz source. The power hundred 40-W mercury vapor lamps in parallel and supplied by a 120 V factor seen by the source is 0.65, which is so low that a rms, 60-Hz source. The power before the billing penalty equals the cost of the capacitor needed to correct the power factor to 0.85.
Transcribed Image Text:7.36 An industrial assembly hall is continuously lit by price of 1 kWh is $0.05 and the average cost of a capacitor is $50 per mF, compute how long it will take 25 percent penalty is applied at billing. If the average and supplied by a 120 V rms, 60-Hz source. The power hundred 40-W mercury vapor lamps in parallel and supplied by a 120 V factor seen by the source is 0.65, which is so low that a rms, 60-Hz source. The power before the billing penalty equals the cost of the capacitor needed to correct the power factor to 0.85.
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