Single phase induction motor: theory of operation, equivalent circuit and starting. Three phase induction motor: Operating principle, construction, rotating magnetic field, equivalent circuit, vector diagram, torque-speed characteristics, effect of changing; rotor resistance and reactance on torque-speed curves, motor torque and developed rotor power, no-load test, blocked rotor test, starting and braking and speed control.
Synchronous Generator: excitation systems, equivalent circuit, vector diagrams at different loads, factors affecting voltage regulation, synchronous impedance, synchronous impedance method of predicting voltage regulation and its limitations. Parallel operation: necessary conditions, synchronizing, circulating current and vector diagram. Synchronous motor: operation, principle of starting, effect of loading under different excitation condition, effect of changing excitation, V-curves.