The elevator of a large building is to raise a net mass of 400 kg at a

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The elevator of a large building is to raise a net mass of 400 kg at a constant speed of 12 m/s using an electric motor. Minimum power rating of the motor should be
(a) 0 kW
(b) 4.8 kW
(c)47 kW
(d) 12 kW
(e) 36 kW
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Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

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