Answered: The motor of a power saw is rated 68.5%…

The motor of a power saw is rated 68.5% efficient. If 1.8 hp are required to cut a particular piece of lumber, what is the current drawn from a 120-V supply?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 49P: A copper wire has a resistance of 0.500 at 20.0°C and an iron wire has a resistance of 0.525 at the...

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Question

The motor of a power saw is rated 68.5% efficient. If 1.8 hp
are required to cut a particular piece of lumber, what is the
current drawn from a 120-V supply?

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