What is the error in the wattmeter at the full related volt amperes at zero power factors

Posted on 2014-01-16 13:48:00 in Engineering by ABBOTT

A dynamometer type wattmeter is rated at 10amperes and 100 volts with a full scale reading of 1000 watts. The inductance of the voltage circuit is 5 mH and its resistance is 3,000 ?. If the voltage drop across the current coil of the wattmeter is negligible. What is the error in the wattmeter at the full related volt amperes at zero power factors?

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