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question about generators (1 Viewer)

abdog

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Hi guys. I was reading Andrew Harvey's notes and I saw this :

5. assess the effects of the development of AC generators on society and the environment
AC generators allow for the production of AC electricity which can be supplied to the public. This affects society greatly allowing for lights in houses and streets, and many other electrical household appliances. It has affected the environment because of the required infrastructure that has been built to support, generate and supply the electricity to homes. It has also affected the environment as the main source of the torque in AC generators comes from the burning of fossil fuels which contributes to the greenhouse effect. In contrast to that AC generators allow for production of energy from ‘green’ sources such as hydroelectric and wind power plants.

When it says "In contrast to AC generators", does it mean to say DC generators?
 

BrightFella

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No it says 'in contrast to THAT, AC generators...'. So it's saying AC generators are better for environment in terms of greenhouse gas emissions if say hydro instead of fossil fuels are used to power them.
 
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