What are the two main ways of generating electricity? How are they different from each other? Explain.
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Solution
Electricity is generated by two ways:
(a) Hydro electricity is generated by running water which drives hydro turbines. India has a number of multi-purpose projects like the Bhakra Nangal, Damodar Valley Corporation, etc.
(b) Thermal electricity is generated by burning non-renewable fossil fuels like coal, petroleum and natural gas. There are over 310 thermal power plants in India.