Power Engineering - I

      Single phase AC systems: introduction to real/reactive/apparent powers, power factor, introduction to phasors, phasor analysis and phasor diagram Three phase AC systems: analysis of balanced and unbalanced networks Review of magnetic circuits: inductance, mmf, reluctance, mutual inductance Transformers: single phase transformer (equivalent circuit, efficiency, OC/SC tests), auto transformer, three phase connections DC machines: equivalent circuit, separately excited machines Induction machines: rotating magnetic field, equivalent circuit, torque speed characteristics, efficiency, generator/motor action