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What is the formula for the total eddy current loss in conductors?(a) total copper loss = 3 * average value of the eddy current constant * current per phase^2 * dc resistance(b) total copper loss = 3 / average value of the eddy current constant * current per phase^2 * dc resistance(c) total copper loss = 3 * average value of the eddy current constant / current per phase^2 * dc resistance(d) total copper loss = 3 * average value of the eddy current constant * current per phase^2 / dc resistanceI had been asked this question in semester exam.This question is from Losses and Temperature Rise in portion Design of Synchronous Machines of Design of Electrical Machines

Answer»

The correct OPTION is (a) total copper loss = 3 * average value of the eddy current constant * current per phase^2 * dc resistance

To elaborate: The average value of the eddy current constant is obtained. Next the I^2R loss values are CALCULATED and MULTIPLYING with 3 gives the total copper loss.



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