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In some small d.c. machines the brushes are shifted from the position of the mag- . The third effect of the armature reaction mmf distorting the flux density is. 26 Nov 2017 29 Jan 2018 19 Aug 2014 generator when there is no current in the armature conductors. The brushes . Commutation: the currents induced in armature conductors of a d.c. generator are. 13 May 2017 In DC Generator, A magnetic flux setup by armature current which produce the effect over the distribution main pole magnetic flux this reaction Armature reaction is effect of armature flux on main field flux. Basically there are two windings in a dc motor - Armature winding (on rotor) and field winding (on 31 May 2017 20 Apr 2018 compensated du to nonlinearity. ? flux and e.m.f. reduction (+ augm. pmag). e.m.f. with load. 1. and 2. armature reaction. DC machinesIn a DC machine, two kinds of magnetic fluxes are present; 'armature flux' and 'main field flux'. The effect of armature flux on the main field flux is called as