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It is well known that motor Horse Power is

hp = TxRPM/5250

where T stands for torque and RPM is the motor RPM

So this means that for a given hp, lesser is the RPM more will be the torque. i.e which means that 6 pole motor shall have more torque compared to a 4 pole motor of the same Horse Power.

So then why do we use 4 pole motors instead of 6 pole motors?

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