294 



INDUCTION MACHINES. 



[Exp. 



the complete set. Note the voltage regulation with load. Note 

 how the relative amounts of power supplied by the driving motor 

 and by the primary are related to the change in frequency. 



8. Repeat the test, converting from a high to a low frequency. 

 The driving motor, when running as a generator, may pump 

 power into the line. 



