An electrical motor or an internal combustion engine.
An electric motor is a device using electrical energy to produce mechanical energy, nearly always by the interaction of magnetic fields and current-carrying conductors.
The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber. In an internal combustion engine the expansion of the high temperature and pressure gases, which are produced by the combustion, directly applies force to a movable component of the engine, such as the pistons or turbine blades and by moving it over a distance, generate useful mechanical energy.
|Includes CC-BY-SA content from Wikipedia's Motor article (authors)|
|Includes CC-BY-SA content from Wikipedia's Electric motor article (authors)|
|Includes CC-BY-SA content from Wikipedia's Internal combustion engine article (authors)|