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An electric generator is a machine that converts mechanical energy into electrical energy. This is typically achieved by rotating a coil of wire within a magnetic field, which induces an electric current. Generators can range from large turbines powered by water, wind, or steam to smaller gasoline-powered units used for backup power.12

Generators are essential for supplying electricity to homes, businesses, and industries, as well as powering vehicles like cars, aircraft, and trains. Most generators produce alternating current (AC), which can be efficiently transmitted over long distances and transformed to different voltage levels. Some specialized machines, known as motor generators, use an electric motor coupled to a generator to convert electricity from one form to another, such as AC to direct current (DC).134

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