A) high retentively, high coactivity
B) high retentively, low coactivity
C) low retentively, high coactivity
D) low retentively, low coactivity
Correct Answer: D
Solution :
Due to alternating current direction and magnitude of magnetizing field intensity in the core is increasing frequently. To get high flux linkage between primary and secondary loop of transformer, intensity of magnetization should change its direction frequently inside the core Low retaintivity and coercively is needed for that.
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