INDUCTION MOTOR 



335 



To obtain an expression for the diameter of the circle, consider 

 the special case where the motor is at standstill and the rotor and 

 stator resistances are both zero. 



p 



FIG. 316. M.m.f. diagram of an induction motor. 

 Referring to Fig. 318 



777 _ 7TT 77T 



LJ\ j a Lii a - 



and 



FIG. 317. Current diagram of an induction motor. 



