ELECTROMOTIVE FORCE AND CURRENT. 



27 



140 



120 



100 



80 



60 



40 



20 



v 



20 40 60 80 100 120 140 160 180 



Degrees. 



Calculated Values. O Observed Values. 

 FIG. 12. CURVE OF RESULTANT VOLTAGE OF Two ALTERNATORS IN SERIES. 



