This course provides a comprehensive study of transformers, three phase synchronous generators and motors, and both three phase and single phase induction motors. It begins with foundational principles—such as Ampère’s and Faraday’s laws—and shows how these laws lead to the operating principles of transformers and electric machinery. Topics include magnetic circuits; equivalent circuits for transformers, motors, and generators; and the development of rotating magnetic fields that underpin three phase machines. The course examines winding types, single phase induction motor behavior, and special purpose transformers including potential transformers, current transformers, and autotransformers. Students analyze voltage regulation and power conversion efficiency and perform open and short circuit test calculations for transformers and AC machines. Additional topics include conditions for paralleling synchronous generators, the use of synchronous motors as synchronous condensers, transient currents under fault conditions, and both static and transient stability. The course concludes with coverage of special motors such as stepper, reluctance, and hysteresis motors.Course Prerequisites: 525.201 or equivalent course in AC Circuit Theory.