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High Quality Content by WIKIPEDIA articles! A rack lift is a type of elevator which consists of a cage attached to vertical rails affixed to the walls of a tower or shaft and which is propelled up and down by means of an electric motor which drives a pinion gear that engages a rack gear which is also attached to the wall between the rails. An electric motor uses electrical energy to produce mechanical energy, very typically through the interaction of magnetic fields and current-carrying conductors. The reverse process, producing electrical energy from mechanical energy, is accomplished by a…mehr

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High Quality Content by WIKIPEDIA articles! A rack lift is a type of elevator which consists of a cage attached to vertical rails affixed to the walls of a tower or shaft and which is propelled up and down by means of an electric motor which drives a pinion gear that engages a rack gear which is also attached to the wall between the rails. An electric motor uses electrical energy to produce mechanical energy, very typically through the interaction of magnetic fields and current-carrying conductors. The reverse process, producing electrical energy from mechanical energy, is accomplished by a generator or dynamo. Traction motors used on vehicles often perform both tasks. Many types of electric motors can be run as generators, and vice versa.