Synchronous motors with permanent magnets: Types of rotors depending on the shape of permanent magnets, basic relations, the torque, equivalent schemes, the block diagram, functions, transferred occurrences, characteristics. Stepping motors: types of stepping motors, the torque, power and voltage, the block diagram, functions, the transferred occurrences, static and dynamic stability, step motors control and power, the static torque, the position error, the step impact on the torque and power, the limit torque, characteristics. Direct current servo motors: servo motors driven by rotor power, constant regulation, power loss, the possibility of torque constant change, the impact of power on motor response, the function block diagram , servo motors powered by excitation current, functions, the block diagram and operation stability. Brushless direct current motors: power, basic relations, block diagrams, functions, motor torque and power. Selsins: types, basic relations, operation errors, static and dynamic stability, block diagrams, speed of response, oscillations.