Lessons in Electric Circuits Volume II AC Study Guide and Chapter Summaries – Tony R. Kuphaldt (6th Edition, 2021) BSEE/BSET
Free Lessons in Electric Circuits Volume II (AC) by Tony R. Kuphaldt: 14 chapters on phasors, reactance, impedance, resonance, filters, transformers, three-phase power, motors and transmission lines, with a chapter-by-chapter study guide.