The field coils of alternators can be checked for impedance by applying a low-frequency high voltage to each coil and measuring the current.

Question

Quizplus · Accepted Answer

The field coils of alternators are typically checked for insulation resistance and continuity, not impedance, using a megohmmeter or similar device to apply a DC voltage. Impedance testing with a low-frequency high voltage is not a standard procedure for field coils.

The Field Coils of Alternators Can Be Checked for Impedance