Is the device that converts mechanical energy into electrical energy. It forces electricity to flow through an external circuit. Mechanical power source may be a piston or turbine steam engine.
Is a device that converts mechanical energy into electrical energy. Such devices would force electricity to flow through an external circuit. The source of mechanical energy may be a reciprocating engine or turbine.
Is a device which converts mechanical energy into electrical energy. The device will force the electricity to flow through the external circuit. The source of mechanical energy could be a piston or turbine engines.