Select the three methods of improving commutation.
1
Ring windings, Armature winding and Series commutation
2
Resistance commutation, Voltage Commutation and Compensating Windings
3
Capacitance commutation, Voltage Commutation and Series Windings
4
Capacitance commutation, Inductance Commutation and Compensating Windings
5
Resistance commutation, Voltage Commutation and Parallel Windings