Armature reaction in DC machines

Armature reaction in DC machines



#1 Apr 16, 2013
Why & how Magnetic Neutral Axis (MNA) changes in DC machines?


#2 Apr 16, 2013
some on have any scientific prove of temperature co-efficient +ve and -ve of conductor and semi-conductor respectively??
Vivek pandey

Ashburn, VA

#3 May 19, 2013
Armature reaction is the flux generated by armature conductor when current passes through the conductor .the direction of this flux is opposite to the main flux(winding flux).

Since: Jul 13

San Jose, CA

#4 Jul 19, 2013
In a DC machine, the main field is produced by field coils. In both the generating and motoring modes, the armature carries current and a magnetic field is established, which is called the armature flux. The effect of armature flux on the main field is called the armature reaction.The armature reaction:

1. demagnetizes the main field, and
2. cross magnetizes the main field.

Pasadena, CA

#5 Mar 2, 2015
What is mean by crossmagnitisation and demagnitisation.

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