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thun56597
2 năm trước
Để tăng HĐT từ 2500v lên 25000v người ta dùng MBT mà cuộn sơ cấp có số vòng là 1000 vòng .a) Tính số vòng cuộn thứ cấp. b)Dùng MBT trên để truyền tải thì công suất hao phí giảm đi bao nhiêu lần
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