Motor usually refers to the electric motor, a machine that converts electricity into a mechanical motion: Servo motor, it's used in robots. It also has an inbuilt rotation sensor AC motor, a machine using alternating current electricity Synchronous motor Induction motor Electrostatic motor, type of electric motor based on the attraction and repulsion of electric charge Internal fan-cooled electric motor Other uses: Molecular motors, the agents of movement in living organisms Synthetic molec… (More on Motor)