Armature reaction in a generator results in
A)demagnetisation of leading pole tip and magnetisation of trailing pole tip
B)demagnetisation of trailing pole tip and magnetisation of leading pole tip
C)damagnetising the centre of all poles
D)magnetising the centre of all poles

Question

Quizplus · Accepted Answer

Armature reaction in a generator results in the demagnetisation of the leading pole tip and magnetisation of the trailing pole tip due to the distortion of the main magnetic field by the armature current. This effect shifts the neutral zone and can lead to sparking at the brushes if not compensated for.

Armature Reaction in a Generator Results in