CHAP. VIII] REACTION IN SYNCHRONOUS MACHINES 



145 



expressed by eq. (64) . The triangle OFG represents the relations in 

 space, while the figure OABD is a time diagram. Therefore, the 

 two figures are independent of one another; but it is convenient 

 to combine them into one, by using the common vectors and i. 



ix 



FIG. 37. The performance diagram of a synchronous generator, with 

 non-salient poles. 



\\\\ h respect to the triangle OFG, the vector t represents the posi- 

 ti.n of the crest of the armature in.m.f. relatively to the crest OO 

 of the field in.m.f.. the an-jle betWMB the tuo l.eing 90+^, OS IS 



explained above. Thus, the vect . n phase with i. 



