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Determine the maximum torque on the shaft.

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See the attached file.

The arrangement in attached figure shows a simple prototype motor with an armature shaft carrying two identical loops each with effective area of 20 cm^2 and placed at right angles to each other. The loops are connected in parallel to a commutator.

Determine the maximum torque on the shaft if the motor takes a current of 5 A in a uniform flux density of 0.5 T.

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