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The diagram below shows the process by which electricity is generated in two types of hydroelectric power stations.

The diagram below shows the process by which electricity is generated in two types of hydroelectric power stations. ROAQ
The diagram compares the process by which electricity is generated in two types of hydroelectric power stations. Overall, electricity produced by a traditional hydroelectric plant is produced in three stages, as opposed to in five stages at a run-of-river hydroelectric plant. In a traditional hydroelectric power plant, river water rises behind a dam until it is sufficiently high enough to enter an intake pipe near the top. Once it enters, the water flows down into a much lower turbine chamber whereupon it causes the machine's blades to rotate, thus generating electricity. This power is then sent via transmission lines to customer's homes. On the other hand, in a run-of-river hydroelectric plant, the natural flow of the water running downhill is harnessed to turn the turbine blades. Initially, water is channeled away from the water's primary path down a pipe into a turbine building further down the hill. Upon entering the building, the water causes turbine blades to rotate which in turn spins a generator that produces electricity. this power is then conducted by transmission lines above the plant to where it is needed. Surplus water then exits the plant and rejoins the river to resume its original course.
The diagram compares the process by which
electricity
is generated
in two types of hydroelectric
power
stations.
Overall
,
electricity
produced by a traditional hydroelectric
plant
is produced
in three stages, as opposed to in five stages at a run-of-river hydroelectric
plant
. In a traditional hydroelectric
power
plant
, river
water
rises behind a dam until it is
sufficiently
high
enough
to enter an intake pipe near the top. Once it enters, the
water
flows down into a much lower
turbine
chamber whereupon it causes the machine's blades to rotate,
thus
generating
electricity
. This
power
is then
sent
via transmission lines to customer's homes.
On the other hand
, in a run-of-river hydroelectric
plant
, the natural flow of the
water
running downhill
is harnessed
to turn the
turbine
blades.
Initially
,
water
is channeled
away from the water's primary path down a pipe into a
turbine
building
further
down the hill. Upon entering the building, the
water
causes
turbine
blades to rotate which in turn spins a generator that produces
electricity
.
this
power
is then conducted by transmission lines above the
plant
to where it
is needed
. Surplus
water
then exits the
plant
and rejoins the river to resume its original course.
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IELTS academic The diagram below shows the process by which electricity is generated in two types of hydroelectric power stations.

Academic
  American English
1 paragraphs
198 words
6.0
Overall Band Score
Coherence and Cohesion: 5.5
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Lexical Resource: 6.0
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Grammatical Range: 6.5
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Task Achievement: 6.5
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