ELEMENTS OF ELECTRICAL ENGINEERING. 



primary or stator member which is identical to the stator of the 

 single-phase induction motor, and a secondary or rotor member 

 which is like an ordinary direct-current armature with a commu- 

 tator and brushes. The primary member is supplied with single- 

 phase alternating current, and the secondary member is short- 

 circuited by connecting its brushes directly together. The essen- 

 tial features of the repulsion motor are shown in Fig. 271, which 

 represents a two-pole model. The stator winding produces 

 through the armature a pulsating flux in the direction of the 

 arrow <I>, and, in order to describe the action of the motor, this 

 flux may be resolved into two component parts, one of which, 

 T, is parallel to the line of the brushes bb t and the other of 

 which, F t is perpendicular to bb. The stator winding may also 

 be considered in two parts, namely, the part t which produces 

 the flux T and the part / which produces the flux F. It is 



Fig. 271. 



impossible to actually separate the stator winding shown in Fig. 

 271 into the two parts t and f t because certain portions of the 

 stator winding help to produce both T and F. Figure 272, 

 however, shows a more or less fanciful arrangement in which 

 there are two separate stator windings t and / with their axes 

 at right angles to each other. 



