2-128 On a hot summer day, the air in a well-sealed room is circulated by a 0.50-hp fan driven by a 65 percent efficient motor. (Note that the motor delivers 0.50 hp of net shaft power to the fan.) The rate of energy supply from the fanmotor assembly to the room is a) 0.769 kJ/s b) 0.325 kJ/s c) 0.574 kJ/s d) 0.373 kJ/s e) 0.242 kJ/s | |
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