Commutator (electric) A commutator is a moving part of a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.
The word equation that would represent the formation of lithium oxide from lithium metal and oxygen is: lithium + oxygen to lithium oxide. In chemical symbols, the balanced chemical equation is expressed as: Li + O2 = Li2O.
The reaction is started in each cylinder of a car by a spark from a spark plug. Most of the energy released during the reaction is used to turn the wheels of the car. The chemical word equation for the combustion of octane is: octane + oxygen â carbon dioxide + water. Taking off The fuel used in jet aircraft is kerosene, which is obtained from crude oil. Like the octane in cars, the vapour of this fossil fuel reacts with oxygen.