Practice question

A school bus charging system test shows 16.5V at the battery with the engine running. This indicates:

  1. A normal heavy-duty system
  2. A discharged battery
  3. A faulty voltage regulator (overcharging)
  4. An open alternator field

Answer: C — A faulty voltage regulator (overcharging)

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Practice more: ASE S6 Electrical Electronic Systems (School Bus) Practice Questions - ASE S6 - Electrical Electronic Systems (School Bus) Certification Exam →