The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The diagram illustrates the process of generating

electricity

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using a hydroelectric power station. In general, the process cycle is broadly distributed into

day

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and

night

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stages with the

day

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the

water

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flows

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downward.

On the other hand

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, the

night

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stage is when the

water

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flows

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back into the initial

reservoir

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. In the beginning stages of the

day

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, the

water

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from the river is stored in the high-level

reservoir

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. Next stage, the dam can be opened during the

day

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and the

water

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flows

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downward to move the turbine to generate

electricity

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. Next stage, the

electricity

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is stored in a generator.

Then

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, the power station distribution

electricity

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to the National grid using Power lines. After that, the

water

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to stored in the low-level

reservoir

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. In terms of the

night

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stages, the

water

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flows

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in another direction by the turbine at

night

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.

Moreover

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, the

water

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is pumped back to a high-level

reservoir

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which is closed during the

night

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. The river

water

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is stored at the upper level and later it

flows

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down, starting the cycle again.