Is this question wrong or impossible to answer? Why is the answer D?
回答 (1)
2016-11-11 7:52 am
✔ 最佳答案
Yes, I think one important piece of information is not given in the question. It is the "turn ratio" of the two transformers.The power dissipated at the transmission cable depends very much on the output voltage at the left transformer. Without knowing the "turn ratio", such value cannot be found.
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