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A starter (also self starter, self, or starter motor) is an electric motor, pneumatic motor, hydraulic motor, an internal-combustion engine in case of very large engines or other device used for rotating an internal-combustion engine so as to initiate the engine's operation under its own power.he starter motor is used for this purpose and is not required once the system starts running.
Lesson Summary. An electric motor is a device that turns electrical energy into motion, usually rotation. It changes electrical energy into mechanical or kinetic (movement) energy. This works using electromagnetism. A loop of wire containing a current is passed through an electromagnet's magnetic field.n electric motor contains a coil of wire (sometimes called a solenoid), that creates a magnetic field when electricity flows through it. This is collectively known as an electromagnet.