The purpose of the tutorial is to help students learn how to calculate the linear electrical circuits of direct and alternating current (single-phase and three-phase), the parameters of alternating current machines and choose diodes for various rectifier circuits. Includes six practical works on the following sections: "DC electrical circuits," "Single-phase electrical circuits of sinusoidal current," "Three-phase circuits," "Alternating current machines," "Electronic rectifiers," which contribute to the consolidation of theoretical knowledge. The above material is illustrated by examples to help solve typical problems.