Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Electrical machines are almost entirely used in producing electricity, and there are very fewelectricity-producing processes where rotating machines are not used. In such processes,at least auxiliary motors are usually needed. In distributed energy systems, new machinetypes play a considerable role: for instance, the era of permanent magnet machines has nowcommenced.About half of all electricity produced globally is used in electric motors, and the share ofaccurately controlled motor drives applications is increasing. Electrical drives provide probablythe best control properties for a wide variety of processes. The torque of an electric motormay be controlled accurately, and the efficiencies of the power electronic...
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DESIGN OF ROTATING ELECTRICAL MACHINES
