Explain primary and secondary sources of energy.
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Primary sources:
They are those sources which do not require any transformation before their use. They are directly used e.g., coal, lignite, petroleum, gas, etc.
Secondary sources:
The sources which involve transformation process before final use are referred to secondary sources e.g. transforming inputs of coal energy into electricity.
They are those sources which do not require any transformation before their use. They are directly used e.g., coal, lignite, petroleum, gas, etc.
Secondary sources:
The sources which involve transformation process before final use are referred to secondary sources e.g. transforming inputs of coal energy into electricity.
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