题目内容
变压器空载运行时()。
2020-12-16
A.当电流为正弦波时,主磁通为尖顶波
B.当磁通为平顶波时,电流为正弦波
C.当磁通为正弦波时,电流为平顶波
D.当电流为正弦波时,主磁通为正弦波
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