In a starter-generator, which windings typically receive current during the start mode?

In a starter-generator system, during the start mode, both the field and armature windings receive current to initiate the starting process. The field windings are energized to create a magnetic field, which is essential for the generator's operation and helps in producing the necessary torque when the system is engaged to start the engine. Simultaneously, the armature windings receive current generating an induced magnetic field, allowing the entire system to function effectively as both a starter and a generator. This dual current supply is vital for providing sufficient starting power and ensuring the efficient operation of the generator function once the engine is running.