Practice question

A school bus blower motor circuit reads 12.6V at the battery but only 10.2V at the motor with the motor running. What does this indicate?

  1. A 2.4V voltage drop somewhere in the circuit
  2. A normal reading for a blower motor
  3. An open circuit between battery and motor
  4. A short to ground at the motor

Answer: A — A 2.4V voltage drop somewhere in the circuit

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