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A potential difference of 250 V is applied to a field winding at 15C and the current is 5 A. What will be the

A potential difference of 250 V is applied to a field winding at 15C and the current is 5 A. What will be the mean temperature of the winding when current has fallen to 3.91 A, applied voltage being constant. Assume a15 = 1/254.5.

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