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A series-connected dc motor is designed to operate with a variable load. The resistances RA and...

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Electrical Engineering

A series-connected dc motor is designed to operate with avariable load. The resistances RA and RF are negligible. To attainhigh efficiency, the motor has been designed to have very smallrotational losses. For a load torque of 80 N?m , the machine runsat its maximum rated speed of 1300 rpm . Find the speed for a loadtorque of 350 N?m

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3.7 Ratings (612 Votes)
AnsThe speed and armature current are related by the equationwhere    See Answer
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