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Harmonics are periodic distortions of voltage, latest, or energy sine waves. Harmonics in power distribution techniques are sometimes due to non-linear loads which include switched method dc ability provides and adjustable pace motor drives.Trường ĐH Thủy lợi lọt vào bảng tử thần, Trường ĐH Tôn Đức Thắng gặp khó Bóng