Red Seal Electrician Practice
AC generationQuestion 1280 of 1506

What is a static phase converter, as described in the text?

  1. A transformer with three secondary windings on one core
  2. An unloaded 3-phase motor on single phase, making 3-phase output
  3. A DC drive fed from a single-phase line
  4. A capacitor bank placed across a three-phase line
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Correct answer: An unloaded 3-phase motor on single phase, making 3-phase output

The unloaded motor also acts as a three-phase generator, so a three-phase supply can be tapped from its windings.

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

Practice ac generation

Questions last reviewed: 18 October 2026