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A motor or engine is a machine designed to convert energy into useful mechanical motion.[1][2]


Motors can be categorised according to the substance they use to create the mechanical motion. As such, (bio)fuel motors, compressed air motors and electric motors can be distinguished.


  1. "Motor". Retrieved 2011-05-09. "a person or thing that imparts motion, esp. a contrivance, as a steam engine, that receives and modifies energy from some natural source in order to utilize it in driving machinery."
  2. (World heritage) "3. any device that converts another form of energy into mechanical energy so as to produce motion"

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