OPERATION OF THE DYNAMO AS A GENERATOR. 77 



abscissas. Fig. 67 shows these current-resistance curves of a shunt 

 generator and of a series generator. The dotted portions of the 



Volts 



Amperes 



50 1OO 150 2OO 250 3OO 350 



Fig. 66. 



Fig. 67. 



curves in Fig. 67 correspond to the dotted portions in Figs. 64 

 and 66. An ideal constant current generator would have for its 



