THE ARMATURE REACTIONS OF ALTERNATORS 263 



TABLE VIII 



THEORETICAL COEFFICIENTS 

 Winding with three coils per pair of poles. 



TABLE IX 



THEORETICAL COEFFICIENTS 

 Winding with 6 coils. 



Since these figures must also be modified in every case by the coeffi- 

 cient k corresponding to the E.M.F., as has been explained above, 

 it is evident that they will differ but little from those of Table II. 

 But it is not the less necessary to determine, from a drawing of the 

 machine, the breadth of the flux before applying it in these formulae, 

 and therefore to correct the reactions in order to take account of the 

 saturation of the different parts of the armature and of the pole pieces. 

 This correction is made by assuming the magnetic conditions 

 which are approximately attained in the machine at full load. The 



