Red Seal Electrician Practice
AC generationQuestion 513 of 1506

Why is a practical alternator better than a simple alternator?

  1. Its brushes carry the full load current
  2. Its brushes carry only the small field current, so they can be small
  3. It has no brushes
  4. It has no field poles
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Correct answer: Its brushes carry only the small field current, so they can be small

In a simple alternator the brushes must be sized for the load.

Source: Trigonometry and Single Phase AC Generation for Electricians (Flinn), 3.2: The Alternator

Practice ac generation

Questions last reviewed: 18 October 2026