If the torque lost due to friction and wind age is 7 of the


A 230-V dc shunt motor delivers 30 hp at the shaft at 1120 r/min. If the motor has an efficiency of 87% at this load, find:

(a) The total input power.

(b) The line current.

(c) If the torque lost due to friction and wind age is 7% of the shaft torque, calculate the developed torque.

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Chemical Engineering: If the torque lost due to friction and wind age is 7 of the
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