INTRODUCTION, 2 AMPERE'S LAW AND FARADAY'S LAW,3 MOTOR ACTION, 4 BACKGROUND OF THE EQUIVALENT CIRCUIT, 5 ANALYSIS OF THE EQUIVALENT CIRCUIT, 6 THE SIMPLIFIED EQUIVALENT CIRCUIT, 7 THE VECTOR DIAGRAM, 8 THE CIRCLE DIAGRAM, 9 sTAOR WINDINGS, 10 ROTOR WINDINGS, 11 DIELECTRICS AND INSULATION, 12 MAGNETOMOTIVE FORCES ACTING ACROSS THE AIR GAP, 13 REACTANCE, 14 THE MAGNETIC CIRCUIT, 15 APPLICATION OF INDUCTION MOTORS, LIST OF SYMBOLS.