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.
The diagram outlines the
process
of electricity
production in a hydroelectric power
station
. The process
begins when the water
flows
from the river
into a high-level reservoir
and ends with the transmission of electricity
to the national grid.
In general, the process
is broadly distributed into day
and night
stages with the daylight stages involving electricity
production from a river
and storage of water
in a reservoir
. At night
, the water
flows
back in the opposite direction towards an initial reservoir
and the river
.
The day
stage of the process
involves channelling the river
water
into a high-level reservoir
backed up by a dam. There is an intake area leading to the power
station
that opens during the day
and closes at night
. Water
flows
during the day
to generate electricity
through the power
station
turbines. The generated electricity
is then
sent to a national grid through power
lines while
the excess water
runs to a low-level reservoir
.
During the night
stage, the water
stored in the low-level reservoir
is reverted to the power
station
and the turbines of the generator pump it back into the high-level reservoir
which is closed during the night
. The river
water
is stored at the upper level and later it flows
down, starting the cycle again.Submitted by e.warikar on
Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Writing9 with appropriate and specific direction to the original content.
Basic structure: Change the third paragraph.
▼
Basic structure: Change the fourth paragraph.
▼
Vocabulary: Replace the words process, electricity, power, station, water, flows, river, reservoir, day, night with synonyms.
▼
Vocabulary: Only 2 basic words for charts were used.
▼
Vocabulary: Use several vocabularies to present the data in the second paragraph.
▼
Vocabulary: Use several vocabularies to present the data in the third paragraph.
▼
Vocabulary: Use several vocabularies to present the data in the fourth paragraph.
▼