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To find percent error in a wattmeter: %error= (Pactual-PmeterJ/Pactual = (cos (theta) - cos (theta - d))/cos(theta) We know Power Factor (PF) = cos (theta)

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To find percent error in a wattmeter: %error= (Pactual-PmeterJ/Pactual = (cos (theta) - cos (theta - d))/cos(theta) We know Power Factor (PF) = cos (theta) Using MATLAB Show the %error in the meter readings for PF's ranging from 0.1-1 T And for d ranging from 0 to 10 degrees

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