When there is excessive AC output coming from an AC generator, a car radio sometimes makes a whining sound like a siren.

Name: When there is excessive AC output coming from an AC generator, a car radio sometimes makes a whining sound like a siren.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

This is known as alternator whine or electrical noise, and occurs when the electrical system in the car is not properly shielded or grounded, allowing the AC output from the generator to interfere with the radio's signal.

When There Is Excessive AC Output Coming from an AC