The nameplate on a 460-V, 50-hp, 60-Hz, four-pole induction motor indicates that its speed at rated load

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The nameplate on a 460-V, 50-hp, 60-Hz, four-pole induction motor indicates that its speed at rated load is 1755 r/min. Assume the motor to be operating at rated load.

a. What is the slip of the rotor?

b. What is the frequency of the rotor currents?

c. What is the angular velocity of the stator-produced air-gap flux wave with respect to the stator? With respect to the rotor

d. What is the angular velocity of the rotor-produced air-gap flux wave with respect to the stator? With respect to the rotor

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Electric Machinery

ISBN: 978-0071230100

6th Edition

Authors: Charles Kingsley, Jr, Stephen D. Umans

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Question Posted: Feb 14, 2011 01:51 AM

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The nameplate on a 460-V, 50-hp, 60-Hz, four-pole induction motor indicates that its speed at rated load

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a Synchronous speed is 1800 rmin Therefore s 1800 1755 1800 0025 25 b Rotor currents are at s...View the full answer

Electric Machinery

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