ag at steae er input of
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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,
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