Question 472Electricity & Electronics - QMED

The correct answer is D) The secondary windings have half as many turns as the primary windings. In a 2:1 step-down voltage transformer, the secondary windings have half the number of turns as the primary windings. This is because the transformer's voltage ratio is directly proportional to the turns ratio between the primary and secondary windings. A 2:1 step-down transformer means the secondary voltage is half the primary voltage, which requires the secondary windings to have half the number of turns as the primary windings. The other answer choices are incorrect because they do not accurately describe the relationship between the primary and secondary windings in a 2:1 step-down transformer. The current, resistance, and wire size of the windings are not determined solely by the turns ratio.