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Which action should follow illumination of the charge warning lamp while driving?

  • A.Reduce electrical load and drive to assistance promptly
  • B.Stop immediately and switch off, which is the only safe action because the vehicle cannot be driven without charging
  • C.Ignore it
  • D.Switch on the headlamps, which loads the alternator and may therefore restore its excitation while driving

Answer: A

The vehicle will run on the battery for a limited time, so reducing load and heading for help is sensible. Stopping immediately is genuinely wise if the belt has broken and the water pump is belt driven, which makes the second option right in that case. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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