Which circuit is used to energize the alternator's field winding?

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Multiple Choice

Which circuit is used to energize the alternator's field winding?

Explanation:
Energizing the alternator’s field winding requires a DC current. The field winding is on the rotor; when fed with direct current, it creates a steady magnetic field. As the rotor spins inside the stator, this steady field induces alternating current in the stator windings. The voltage regulator adjusts the level of this DC excitation to keep the system voltage within limits. Using AC for the field would randomize the magnetic field and disrupt regulation, while a pulse or hydraulic circuit isn’t used to energize the field in a standard alternator system.

Energizing the alternator’s field winding requires a DC current. The field winding is on the rotor; when fed with direct current, it creates a steady magnetic field. As the rotor spins inside the stator, this steady field induces alternating current in the stator windings. The voltage regulator adjusts the level of this DC excitation to keep the system voltage within limits. Using AC for the field would randomize the magnetic field and disrupt regulation, while a pulse or hydraulic circuit isn’t used to energize the field in a standard alternator system.

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