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Merits of two wattmeter method

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Merits of two wattmeter method: 1. This method can be used for balanced as well as unbalanced loads. 2. Connections of wattmeters are independent of load connection. 3. For balanced loads PF can also be determined. 4. Only two wattmeters are required for power measurement which reduces cost. 5. Reactive power can also be measured for balanced loads. 

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