EE8401 Electrical machines 2

UNIT -1 

1.Construction ,Emf equation of Alternator*

2.Voltage regulation ( EMF,MMF,ZPF)**

UNIT-2

1.Starting methods of synchronous motor**
2.Power flow diagram,Torque equation *

2.V-Curves and V -inverted (eff of excitation on armature current and power of synchronous motor

UNIT-3

3phase induction motor
1. Torque slip characteristics (IM),Speed torque (Double cage IM)**

2. IM as generator ,
3.Torque Equation**
Option in rare cases
3. Circle diagram (for slow bloomers this is not needed)

UNIT-4

1.Speed control of  3 phase IM (krammer,scherbius)**

2.Star delta ,Auto transformer ,DOL starter  3phase IM

UNIT-5

1.1phase IM (Double Rev theory or Two field theory)**, equivalent cicuit
2.$haded pole ,AC series ,Reluctance motor
*Based on that topic problems may be asked
**Most important &probelms also asked for exams