The field current for the alternator is typically supplied through which circuit?

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Multiple Choice

The field current for the alternator is typically supplied through which circuit?

Explanation:
The field current for an alternator is DC because the rotor winding that creates the magnetic field must be fed with a steady, non‑alternating current. This DC excitation is what establishes the magnetic field the generator uses to induce AC in the stator windings as it spins. The excitation current is supplied through the DC electrical system and is regulated by the voltage regulator to control the alternator’s output. The AC circuit is the generated power side, not the source for the field, and the ground circuit is only the return path, not a supply for excitation.

The field current for an alternator is DC because the rotor winding that creates the magnetic field must be fed with a steady, non‑alternating current. This DC excitation is what establishes the magnetic field the generator uses to induce AC in the stator windings as it spins. The excitation current is supplied through the DC electrical system and is regulated by the voltage regulator to control the alternator’s output. The AC circuit is the generated power side, not the source for the field, and the ground circuit is only the return path, not a supply for excitation.

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