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 generato h:vu9 k305crh8ogdas tu n(4xr is 440 V at 20 A. It is to be transmitt9/*er:2x)z* 9fzpmp y,pe fpfax1u qxed on a line with resistance of 0.60 W. To what voltage must the genera*y)pe1/x zpqup9ez*r xff,f2xm9p: ator output be stepped up with a transformer if the power loss 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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