The polarity of a transformer is either _____________ or subtractive

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Multiple Choice

The polarity of a transformer is either _____________ or subtractive

Explanation:
Polarity in a transformer describes whether the voltages on the windings reinforce each other or oppose each other when the windings are connected in series. When the ends with the same instantaneous polarity are connected in series, the voltages add together—that’s additive polarity. When the windings are connected so their polarities oppose each other, the voltages subtract—that’s subtractive polarity. The dot convention helps you tell which ends are in phase, guiding how connections will behave in series or when paralleling windings. The term additive is the standard way to describe the reinforcing case, while neutral or infinite aren’t used to describe this property.

Polarity in a transformer describes whether the voltages on the windings reinforce each other or oppose each other when the windings are connected in series. When the ends with the same instantaneous polarity are connected in series, the voltages add together—that’s additive polarity. When the windings are connected so their polarities oppose each other, the voltages subtract—that’s subtractive polarity. The dot convention helps you tell which ends are in phase, guiding how connections will behave in series or when paralleling windings. The term additive is the standard way to describe the reinforcing case, while neutral or infinite aren’t used to describe this property.

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