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46. Power in AC ccts

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power in ac circuits
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  Chapter 17 Power in AC Circuits  2  Active Power ã Instantaneous power to a load is  p  = v ã i    ã In an ac circuit  –  p  may be positive sometimes and negative other times ã  Average value of the power, P  – Real power  3  Active Power ã  Average value of instantaneous power, real power, active power, and average power mean the same thing  4 Reactive Power ã During times when  p  is negative, power is being returned from load ã This can happen for inductive or capacitive loads

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