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ag at steae er input of

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An electric motor operating at steady otate requires an electric power input Of ľ Błu/se . Heat transfer Occurs from the motor to the surroundings at temperature To at a rate Of hA (Tb- To), where To is the average Şurface temperature of the motor, hA = 10 Btu /h. °R), and To 80 °F. The torque developed by the shaft of the motor is i4.4 ft· Ibf at a rotational Speed Of 500 RPM, where RPM Stands for rotations per minute and one rotation is aTT radians Determine the Surface temperature To in °F.
Transcribed Image Text:An electric motor operating at steady otate requires an electric power input Of ľ Błu/se . Heat transfer Occurs from the motor to the surroundings at temperature To at a rate Of hA (Tb- To), where To is the average Şurface temperature of the motor, hA = 10 Btu /h. °R), and To 80 °F. The torque developed by the shaft of the motor is i4.4 ft· Ibf at a rotational Speed Of 500 RPM, where RPM Stands for rotations per minute and one rotation is aTT radians Determine the Surface temperature To in °F.
Expert Solution
Step 1

The motor power is given as,

P=2πNT60P=2π×500×14.460P=753.98ft-lbhsP=753.98778ft-lbhsP=0.97Btus

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