A small electric motor such as the one in a home furnace is rated at 1/4 horsepower.
Question:
A small electric motor such as the one in a home furnace is rated at “1/4 horsepower.” Recall that “horsepower” (abbreviated hp) is a unit of power, with 1 hp ≈ 750 W.
(a) How much work does this motor do in 1 s? In 1 h?
(b) Assume it is an ideal motor and all the input electrical energy is converted to mechanical energy. If the motor operates with an AC voltage with Vrms = 120 V, what is the rms current in the motor?
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Power is work per unit time Electrical power can be ca...View the full answer
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Related Book For 
College Physics Reasoning and Relationships
ISBN: 978-0840058195
2nd edition
Authors: Nicholas Giordano
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