本题目来源于试卷: Physics Unit21: Electromagnetic Induction & Faraday's Law，类别为 国际高中通用物理
[单选题]
The output of a generd7o(i atq kfq3 8q,x6cavt(3lqqgb gh2-xmaql.)c )* otor is 440 V at 20 A. It is to be transmitted on a line with resistance of 0.60 W. To what voltage must the generator output be stepped up with a transformer if the power lohqqvbocaq) *l(mggtx) l3 .-2 ss in transmission is not to exceed 0.010% of the original power?
A. $4.4 \; kV$
B. $7.3 \; kV$
C. $22 \; kV$
D. $45 \; kV$
参考答案: B
本题详细解析:
暂无
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