1. ELECTRO-MECHANICAL ENERGY CONVERSION :
Energy stored in electric and magnetic fields, energy conversion in singly and multiple excited systems,
reluctance torque, reluctance and hystersis motors.
2. GENERAL DESCRIPTION OF ELECTRICAL MACHINES :
Description of electric circuits in cylindrical rotor and salient pole machines, MMF of Single and multiple
coils, harmonic analysis of induced voltages and armature MMF, Effect of slots, winding factors, Torque in
terms of flux and mmf.
3. D.C. MACHINES :
Armature windings, single and double layers, windings & winding diagrams, E.M.F. and torque equations,
interaction of fields produced by excitation circuit and armature, effect of brush shift, compensating winding,
commutation, causes of bad commutation, methods of improving commutation, methods of excitation of d.c.
generators and their characteristics.
D.C. motors: characteristics, starting of shunt and series motor, starters, speed control methods-field and
armature control, Ward Leonard method,
Braking: plugging, dynamic and regenerative braking,
Testing: Swinburn's test, Hopkinson test, Field test.
Estimation of losses and efficiency.
4. CROSS-FIELD MACHINES :
Principle of working, analysis of cross-field generator, typical characteristics with different compensations.
Applications.