260 



METHODS OF CALCULATION 



But the ratio of the coefficients K and K t of the two windings gives 

 approximately the same figure. It is to be observed in this connection 



FIG. i6a. 



FIG. 166. 



FIG. i6c. 



that for the case of a flux having a breadth equal to the polar pitch, 

 the coefficient K is substantially equal for these two windings, that 



(2 \ 2 

 1 , which verifies the general 

 K/ 



