In a dc machine without any brush shift, the shift of the magnetic neutral axis owing to armature reaction is
In the direction of rotation for the generator and against the direction of rotation for the motor
In a dc machine without any brush shift, the shift of the magnetic neutral axis owing to armature reaction is In the direction of rotation for the generator and against the direction of rotation for the motor.
The ventilating ducts in most of the dc machines are
The armature core of a dc machine is usually made of