When troubleshooting AC motors, what can a portable growler be used to locate?
Official USCG Answer & Rule Citation
Correct Answer: Option C — shorted stator coils
Portable growlers operate on electromagnetic induction principles to detect shorted turns within AC motor stator coils by sensing localized flux distortions. IEEE 45 maintenance guidelines designate growlers specifically for locating inter-turn stator winding shorts before catastrophic failure occurs.
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