Two wattmeter used to measure the power input

Posted on 2014-02-04 13:43:00 in Engineering by MITCHELL (Y)

Two wattmeter used to measure the power input in a 3-? circuit indicate 1,000 W and 500 W respectively. Find the power factor of the circuit.

1. 
   When both wattmeter readings and positive.


2. 
   When the later is obtained by reversing the current cell connections.

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