Generators create electrical energy to power appliances running on electricity by burning the fuel it uses for producing electricity. The generator includes different elements like a fuel system, engine, voltage regulator, alternator, a control panel, lubrication system, cooling, and exhaust system. Generators are often used as either backup power or even primary power for farming operations, as well as portable power for working on hard-to-reach locations. Types of Generators: AC Generator and DC Generator. Last Updated on Oct 12, 2023. A generator is an electric device in which mechanical power is converted into electrical power for usage in an external electric circuit. It is also called a dynamo.Types of Generators: AC Generator and DC Generator. Last Updated on Oct 12, 2023. A generator is an electric device in which mechanical power is converted into electrical power for usage in an external electric circuit. It is also called a dynamo.