A dc motor running at 2000 rpm has a hysteresis loss of 500 W and eddy – McqOptions

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1.	A dc motor running at 2000 rpm has a hysteresis loss of 500 W and eddy-current loss of 200 W. The flux is maintained constant, but the speed is reduced to 1000 rpm. At the reduced speed the total iron-loss would be
A.	500 W
B.	400 W
C.	300 W
D.	200 W
Answer» D. 200 W

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