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Mathematics, 25.07.2021 23:00 pandamarz

Một máy biến áp một pha cuộn sơ cấp có 3300 vòng, cuộn thứ cấp có 360 vòng . Điện áp đưa vào cuộn sơ cấp 220V . Hiệu điện thế giữa hai đầu cuộn thứ cấp là

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Một máy biến áp một pha cuộn sơ cấp có 3300 vòng, cuộn thứ cấp có 360 vòng . Điện áp đưa vào cuộn sơ...

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