of 36 and 40 is 4, with the result that no more than 4 bars of the stator and rotor can be aligned at any one time, which also reduces torque fluctuations.

The number of bars in the rotor determines to what extent the induced currents are fed back to the stator coils and hence the current through them. The constructions that offer the least feedback use prime numbers of rotor bars.

Laminations

The iron core serves to carry the magnetic field through the rotor conductors. Because

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