442 ELEMENTS OF ELECTRICAL ENGINEERING. 



inductors lie in the bottoms of the slots, and the odd numbered 

 inductors lie in the tops of the slots, as shown in Fig. 6 1. In 



Six-pole drum duplex wave winding, singly reentrant. Z = 62, front pitch 

 = -|- 1 1, back pitch = -f- 1 1, average pitch = 1 1, commutator pitch = -j- 1 1, number 

 of paths = 4. 



Fig. 60. 



this case the front or back pitch is reckoned by counting con- 

 secutive inductors exactly as if they were arranged in one layer. 



