THE ALTERNATOR. 



33 



The full-line curve in Fig. 3 1 is the electromotive force curve 

 of an alternator, the dotted curve is the current curve for the 

 case in which the alternator delivers current to a circuit which 

 has both resistance and inductance, and the ordinates of the dot- 



* Fig. 30. Current in phase with voltage. 



dash curve represent the successive instantaneous values of the 

 power ei delivered by the alternator. In this case there are 

 two pulses of power delivered by the alternator to the receiving 



Fig. 3 1 . Current lagging 60 behind voltage. 



