sentence: Some small ones are cranked by some's arms or legs.
sentences_before: Different things can be used to make the generator head spin.
sentences_after: Bigger ones are connected to an engine. The biggest ones use a steam turbine or hydroelectric water power. Some use wind power. Whatever makes it turn, the generator converts this energy into electrical energy.
concept_name: small one
headings: Electrical generator
categories: Electricity motors