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What does it mean that there are total n poles or n pairs of poles?

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Does it mean there are total n poles or n pairs of poles?
Can there be odd number of poles(N+S) in a motor?
thanks
 

Re: n pole motor

This means there are total n poles in the motor.
Poles cannot exist except in pairs, i.e. the total number of poles is an even number.

Poles act as sources/sinks of magnetic field, so they must exist in pairs.
 

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