In a DC machine without any brush shift, the shift of magnetic neutral axis owing to armature reaction is
A. in the direction of rotation for both the generator and the motor.
B. against the direction of rotation for both the generator and the motor.
C. in the direction of rotation for the generator and against the direction of rotation for the motor.
D. against the direction of rotation for the generator and in the direction of rotation for the motor.
Answer:C
In a DC machine without any brush shift, the shift of magnetic neutral axis owing to armature reaction is
A. in the direction of rotation for both the generator and the motor. B. against the direction of rotation for both the generator and the motor. C. in the direction of rotation for the generator and against the direction of rotation for the motor. D. against the direction of rotation for the generator and in the direction of rotation for the motor.