GENERAL ALTERNATING CURRENT TRANSFORMER. 



Hence, 



. f X, 



sin & = -^ 



OD 



-jr -) 



= ** ( * 

 rTn \ v \ v* 



In words, this means that Xi may be represented as a chord in a 

 semi-circle described upon L D as basis, and having a diameter 



ITD = O~D . ( A 



\Z/! V t / 



If we want to take from the diagram Xi directly without having to 



FIG. 4. 



multiply by v\, we have to join A and K by a circle. For a more de- 

 tailed treatment of all these points I refer the reader to Chapter VIII. 



9. We call the quotient - the leakage factor a of the transformer, 



LD 

 and have therefore 



(2), 



I 



The leakage coefficient a is the most important factor in the theory 



5 



