我想問係一個LR circuit 內(a.c supply)
如果個supply ge frequency 大左
咁個power factor of the circuit 會點??(大左, 細左 or 不變??)
thz
收錄日期: 2021-04-20 16:19:19
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https://hk.answers.yahoo.com/question/index?qid=20080805000051KK02287