Explain how a repulsion motor operates. a. Explain why torque is not developed by a repulsion motor when the brushes are placed directly in line with the stator pole centers. b. The brushes are...

Explain how a repulsion motor operates.

a. Explain why torque is not developed by a repulsion motor when the brushes are placed directly in line with the stator pole centers.

b. The brushes are shifted 90 electrical degrees from the position described in part a of this question. Is a torque developed by the motor in this case?

c. At what position should the brushes be placed relative to the stator pole centers to obtain the maximum torque?