4題基本電學 - 考試
By Ingrid
at 2015-08-31T09:26
at 2015-08-31T09:26
Table of Contents
版上大大好,小弟有四個題目想問
http://imgur.com/RaLCeLC
1、4選項我沒問題,max和min值我都和選項不同
http://imgur.com/yUtBKQO 解答是2
這題我想問的是為什麼是cos角
是因為線圈如同電感嗎?
這是之前拍的,我後來有算出來,問題是為什麼從"sin變cos"
http://imgur.com/9D4gq45 解答是4,我算的答案是1
這題我怎麼算都不對,I不是和xc反比跟f正比
I1=0.5=50
--------- I2=0.1
I2=I2 =10
http://imgur.com/IRGJ6Vl
我的參考書直接寫答案,沒給解釋
以上麻煩各位了,謝謝。
--
http://imgur.com/RaLCeLC
1、4選項我沒問題,max和min值我都和選項不同
http://imgur.com/yUtBKQO 解答是2
這題我想問的是為什麼是cos角
是因為線圈如同電感嗎?
這是之前拍的,我後來有算出來,問題是為什麼從"sin變cos"
http://imgur.com/9D4gq45 解答是4,我算的答案是1
這題我怎麼算都不對,I不是和xc反比跟f正比
I1=0.5=50
--------- I2=0.1
I2=I2 =10
http://imgur.com/IRGJ6Vl
我的參考書直接寫答案,沒給解釋
以上麻煩各位了,謝謝。
--
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考試
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