Red Seal Electrician Practice
TransformersQuestion 1112 of 1506

A transformer feeds a heavier load while its primary voltage stays the same. What happens to the secondary voltage?

  1. It goes up in proportion to the load.
  2. It goes down a little.
  3. It stays exactly constant.
  4. It reverses polarity.
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Correct answer: It goes down a little.

Winding impedance drops more voltage as the load current rises, so the output voltage falls.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 10.6: Voltage Regulation

Practice transformers

Questions last reviewed: 18 October 2026