Practice question

What is the function of the voltage regulator in a vehicle's charging system?

  1. To limit the alternator's output voltage to a safe, constant level (typically 13.5-14.5 V) to protect the battery and electrical components
  2. To increase the engine's compression ratio
  3. To start the engine in cold weather
  4. To filter impurities out of the fuel

Answer: A — To limit the alternator's output voltage to a safe, constant level (typically 13.5-14.5 V) to protect the battery and electrical components

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