1. A certain magnetic core has a core loss of 8.4 W, of which one-third is eddy current loss, when the magnetizing field is changed 60 times a second. determine the core loss if the magnetizing field is changed only 50 times a second.
2. A core operated at 60 magnetization cycles/s ha s hysteresis loss os 1.5 W and an eddy current loss of 0.9 W. what would be the total core loss be at 25 magnetization cycles/s?