Thetime dependent and the phasor notation of the given waveform.

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Chapter 4, Problem 4.45HP

To determine

Thetime dependent and the phasor notation of the given waveform.

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With the aid of a phasor diagram show that the active power and power factor of a balanced three-phase load can be measured by two wattmeters. For a certain load, one wattmeter indicated 20 kW and the other 5 kW after the voltage circuit of this wattmeter had been reversed. Calculate the active power and the power factor of the load. ANS: 15 kW, 0.327

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