The manual is intended for students of non-electrical engineering areas and profiles of polytechnic universities of all forms of education - full-time, evening and correspondence, studying the disciplines "Electrical Engineering and Electronics," "General Electrical Engineering and Electronics." Much attention is paid to the practical use of electrical and electronic devices: purpose, principle of operation, technical capabilities, features of operation. Examples of calculation of values, state of circuits and standard modes of electrical machines and transformers, motor and current lead selection are given.