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1. In three phase power measurement by two wattmeter method,reading of one wattmeter found negative.Then the P.F of the load is:





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MCQ->Assertion (A): In two wattmeter method of 3 phase power measurement, one of the wattmeters would read negative if power factor of load is less than 0.5.Reason (R): In two wattmeter method of 3 phase power measurement, both the wattmeters would show equal readings if power factor of load is unity.

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MCQ->In three phase power measurement by two wattmeter method,reading of one wattmeter found negative.Then the P.F of the load is:....
MCQ->In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is....
MCQ->Assertion (A): A 3 phase wattmeter consists of two wattmeters mounted in one case.Reason (R): Power measurement in a 3 phase circuit can be conveniently done by two wattmeter method.

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MCQ->In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative....
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