Engine: Expired / General Subjects

1. A Current is conveyed from the source to a set of stationary brushes, then through a single rotating slip ring and then on to the motor windings.
2. B Current is conveyed from the source to a set of stationary slip rings, then through a set of rotating brushes and then on to the motor windings.
3. C Current is conveyed from the source to a set of stationary brushes, then through a set of rotating slip rings and then on to the motor windings.
4. D Current is conveyed from the source to the stator of a synchronous transmitter, and by synchro action to the rotor of a synchronous receiver.

Tip: press A-D to answer