increase
decrease
either of the above
none of the above
Answer is Wrong!
Answer is Right!
The correct answer is: B. decrease
The weight of copper of both armature and field windings decreases with decrease in number of poles.
The number of poles in a motor determines the number of times the magnetic field reverses per revolution. The more poles there are, the more times the magnetic field reverses, and the smoother the motor’s operation. However, more poles also require more copper windings, which increases the weight of the motor.
Therefore, motors with fewer poles are lighter than motors with more poles.