The diagram below shows how electricity is generated in a
hydroelectric power station.
Summarize the information by selecting and reporting the
main features, and make comparisons where relevant.
Write at least 150 words
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| Ielts Writing Task 1 Diagrams Dam |
The given diagram elucidates functioning of a hydroelectric production unit.
Overall, the hydroelectric power production
installation is largely divided into 4 primary parts, high level reservoir
behind the dam, a channel to pump water to the turbine in the day and back to
high level reservoir at night, a power station which has reversible turbines
and a generator, and a low level reservoir. This unit produces electricity in
the day.
The water stored in large reservoir behind
the dam is channelized towards the low reservoir by opening the intake during
the day. The water while flowing towards low reservoir runs the reversible turbines,
housed at the base of power station, which in turn operate generator, producing
electricity. The electricity is supplied to the grid with the help of power lines. This operation takes
place in the day.
In the night, the electricity generation is
halted and water from the low reservoir is pumped back into the high reservoir with
the turbines operating in reverse direction.
