THE INDUCTION MOTOR. 



130. In Fig. 38 the resistance or condenser R is, at starting, in series 

 with the main phase, the auxiliary phase being directly between the 

 terminals. 



131. In Fig. 39 the resistance R is in parallel with the auxiliary 

 phase, which is in series with the main phase. 



During the throwing-over of the switch from the starting position 







E 



cS 



H 



^ 



cT 7) 



AUXILIARY 



vmm 



PHASE 



FIG. 39. 



to the running position, the motor is temporarily disconnected from 

 the mains. 



The last chapter we shall devote to a more general and broader 

 treatment of the polar diagrams of the general alternating-current 

 transformer. 



72 



