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An electrical machine is a device that converts electrical energy into mechanical energy or vice versa. The most common types of electrical machines are generators and motors.

Generators are devices that convert mechanical energy into electrical energy. They work by rotating a magnetic field within a coil of wire, which generates an electric current. There are several types of generators, including steam turbines, hydroelectric generators, and wind turbines.

Motors are devices that convert electrical energy into mechanical energy. They work by passing an electric current through a coil of wire that is inside a magnetic field. This creates a force that rotates the coil, which in turn rotates the motor's shaft. Motors are used in a wide range of applications, including electric vehicles, household appliances, and industrial equipment.

Electrical machines play a critical role in modern society and are used in many different industries and applications, from powering homes and businesses to providing motive power for transportation and manufacturing.