In DC generator, brushes are always placed along
A. magnetic neutral axis.
B. geometrical neutral axis.
C. armature axis.
D. load axis.
Show Answer
Answer: A
Share your understanding of this question with the correct explanation.
In a DC generator, the brushes are always placed along the magnetic neutral axis.
The magnetic neutral axis is a location on the commutator where the magnetic field produced by the armature winding is perpendicular to the direction of the brushes. Placing the brushes along this axis helps in achieving efficient commutation, which is the process of transferring current from one armature coil to the next without sparking or arcing.
By placing the brushes along the magnetic neutral axis, the commutator segments connected to the armature coils undergoing commutation experience minimal sparking and wear. This ensures smooth and reliable operation of the DC generator.
Therefore, option A, “magnetic neutral axis,” is the correct answer.