[討論] 李元電力系統94年地特，小地方不懂(求助)
各位大大們，請題點一下我，今天算題目，黃色的框框我不解!
為什麼她要這麼寫? 有點搞不懂
http://imgur.com/a/7fgYN
我的理解如下: 我這樣應該沒有錯吧! 把R2從2次側轉換到1次側，算銅損。
匝數比 a=2
http://imgur.com/a/75Jg1
請各位幫忙解惑一下!
謝謝 orz
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