1. 8895. Certain transport aircraft use AC electrical power for all normal operation and battery furnished DC electri cal power for standby emergency use. In aircraft of this type that operate no DC generators, the batteries are kept charged by A. inverters which use the aircraft’s AC generators as a source of power. B. alternators which use the aircraft’s generators as a source of power. C. rectifiers which use the aircraft’s AC generators as a source of power.