Which of the following describes the relationship between primary and secondary windings in an additive transformer?

In an additive transformer, the primary and secondary windings are connected in such a way that both windings produce voltages that contribute positively to the overall output voltage. This leads to the conclusion that the polarity of the primary and secondary windings is the same, which is why the correct answer states that they are the same in polarity. This characteristic is crucial for proper operation, as it ensures that the voltages add up correctly in the circuit.

When the windings share the same polarity, they allow for voltage levels to sum up, which is essential in applications where an increased voltage is required. This relationship is fundamentally important for the transformer to perform as intended and deliver the correct output.