phy-transformer

👨🏻‍🏫 學術台其他 - 科學

2011-11-26 6:40 am

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回答 (1)

2011-11-26 7:23 am

✔ 最佳答案

Turn ratio = 220/12 = 55:3
Hence, a step-down transformer of turn ratio 55:3 should be used.

Current in primary = 150/220 A = 0.682 A

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