题目内容
符合无损耗、K=1和自感量、互感量均为无穷大，但两者比值是限值条件的变压器是()
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对两个有耦合的线圈各取一个端子，当从这两个端子同时流入或流出电流时,它们在线圈中产生的自感磁通和互感磁通的方向相同，即“磁通相助”，则称这一对端子为_____________。
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