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Question

Which energy of water is used to produce hydroelectricity?

A
Potential energy
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B
Kinetic energy
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C
Both a and b
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D
None of these
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Solution

The correct option is C Both a and b
When water is stored at a height it has potential energy in it. When this water is allowed to flow down from a height potential energy of water gets converted into kinetic energy. A hydraulic turbine converts the energy of this flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity. The operation of a generator is based on the principles discovered by Faraday.
So, the correct answer is 'Both a and b'.

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