The weight of copper of both armature and field windings decreases with __________ in number of poles?
Correct answer: A. increase
- A. increase
- B. decrease
- C. either of the above
- D. none of the above
Explanation
For a given machine output, increasing the number of poles shortens the armature coil span and reduces the length of field coils, so less copper is required in both windings. Therefore, copper weight decreases as the pole number increases.
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