基本電學-宏華考題 - 考試
By Jack
at 2013-12-18T11:36
at 2013-12-18T11:36
Table of Contents
※ 引述《keney963817 (兔子)》之銘言:
: 請問這題答案選項三是不是有問題啊?
: 小弟算的答案是 -500W,
: 而答案的-1000W是用最大值去帶,
: 所有功率不都是用有效值去帶嗎?
: http://ppt.cc/%7ECcH
P(t)=P+Pcos2wt-Qsin2wt, 瞬間最大功率=2P=2*500=1000W
--
Sent from my Android
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: 請問這題答案選項三是不是有問題啊?
: 小弟算的答案是 -500W,
: 而答案的-1000W是用最大值去帶,
: 所有功率不都是用有效值去帶嗎?
: http://ppt.cc/%7ECcH
P(t)=P+Pcos2wt-Qsin2wt, 瞬間最大功率=2P=2*500=1000W
--
Sent from my Android
--
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考試
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