[考題] 98電力系統高考一題:Realtime－2016徵求年菜推薦網路訂購最紅的商家.年菜訂購?台北年菜外送餐廳推薦(年菜)?年菜.今年不想做年菜推薦,網路宅配哪一家好?

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[考題] 98電力系統高考一題

May 18th 2014, 21:12, by ksxo

作者ksxo (aa)

站內Examination

標題[考題] 98電力系統高考一題

時間Sun May 18 21:12:25 2014

三相變壓器之單相規格為：1200/120 V, 7.2 kVA, Z = 5% 其中Y-Y接的部分解答是寫 Zbase = Vbase^2/Sbase = 1260^2/7500 = j192 => Zeq=j192x5%=j9.6 我的問題是 1260 和7500 怎麼來的？為什麼不是1200 和 7200？謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 220.129.82.214 ※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1400418748.A.01E.html

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