Red Seal Electrician Practice
AC generationQuestion 1270 of 1506

A line-connected induction generator stands in a wind farm. A utility power failure occurs. What happens to its output?

  1. It keeps supplying the local loads at the same voltage.
  2. It stops, since it needs live line power for excitation.
  3. It switches over to a DC output for the local loads.
  4. It speeds up and supplies more power to the local loads.
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Correct answer: It stops, since it needs live line power for excitation.

The generator needs a live 50 or 60 Hz supply to magnetize it, so it makes no power when the grid is dead.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.7: Tesla Polyphase Induction Motors

Practice ac generation

Questions last reviewed: 18 October 2026