GEN] 



GENERAL DIAGRAMS FOR SYNCHRONOUS MOTORS 193 



because the Jag 6 then becomes negative at light loads, as indicated 

 in Fig. 14, and the value of ty is then a difference $=<f> 0', which 

 increases but slowly with <j>. 



FIG. 14. 



It is logical to endeavor to make 6 and O r equal to each other, 

 in such a way as to render the two extreme values of as equal and as 

 small as possible. 



