158 TREATISE ON ALTERNATING CURRENTS. 



Now, let T be the admittance per circuit of the stator coils, and 

 = v/^4^ 



where p = virtual conductance per circuit of stator, 



= ratio of hysteretic energy current to the counter 



E.M.F. of mote, and 

 or = susceptance of stator per circuit, 

 = ratio of magnetizing current to counter E.M.F. of 



stator. 



Also let r\ = resistance of stator per circuit, 

 Si = reactance of stator per circuit. 



Then the primary exciting current, i\, is given by 



t/ = - (p - fo)N ie (16) 



and the total primary current is 

 ii = ii + i" 



Nifa -f tea) 

 where 



The P.D. applied between the stator terminals is 

 EI = - EI 4- i\(ri + &*i) 



i D-; 



Equations (17) and (18) may be written in the form 



and 



( 



