How can we determine the polarity of an electrical transformer?
The polarity of an electrical transformer can be determined by connecting two volt...
How can we determine the polarity of an electrical transformer?
The polarity of an electrical transformer can be determined by connecting two voltmeters to the transformer's terminals. If the reading of the second voltmeter is greater than the first, the transformer is additive. If the reading of the first voltmeter is greater than the second, the transformer is subtractive.
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