In the present work the author offer some constructive solutions of the 
hybrid motors resulted from the successive transformations of the rotating 
induction motors. The board effect, caused by the finite dimensions armatures 
and also by the longer air gap, is known and estimated using mathematical 
relations applied to the linear motors. It has been tested the expression 
of the secondary plate resistance, for the hybrid construction, with a 
bilateral toroidal inductor, when the end effect is not neglected.
Keywords: board effect, hybrid motor, the plate disc armature resistance