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The diagrams below show the design for a wave-energy machine and its location. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The diagram illustrates the design for a wave-energy machine and its location. Overall, it is clear that there are two different types of wave-energy machine based on output and installation costs. Also, the main components are chambers, turbines and electricity generaters. To begin with, the two types could be installed in water features whether in shallow and deep levels. Furthermore, installing the machine in shallow water costs less, and in that case it uses small waves to produce low amount of energy. While, locating it in deep water costs more and uses high waves to produce large amount of energy. However, a hole in the machine should be located under water surface in the wave direction to catch waves. wave motion results in an increase in water level inside the machine and air flows up through holes and then move through turbine to generate electricity. Meanwhile, chambers on the top of above water surface allow air flow to move the turbine and move down passing through another chamber to balance air pressure on the water surface.
The diagram illustrates the design for a wave-energy
You use this word too often, consider replacing it with
machine
and its location.

Overall
, it is
This phrase/word (depending on the context) can be potentially replaced with :
clear
that there are two
This phrase/word is too simple and can be replaced with:
different
types of wave-energy
You use this word too often, consider replacing it with
machine
based on output and installation costs.
Also
, the main components are chambers, turbines and electricity
Possible spelling mistake found.
generaters
.

To
This phrase/word (depending on the context) can be potentially replaced with :
begin
with, the two types could
be installed
in
You use this word too often, consider replacing it with
water
features whether in shallow and deep levels.
Furthermore
, installing the
You use this word too often, consider replacing it with
machine
in shallow
You use this word too often, consider replacing it with
water
costs less, and
in that case
it
This phrase/word (depending on the context) can be potentially replaced with :
uses
This phrase/word is too simple and can be replaced with:
small
You use this word too often, consider replacing it with
waves
to produce low amount of energy. While, locating it in deep
You use this word too often, consider replacing it with
water
costs more and
This phrase/word (depending on the context) can be potentially replaced with :
uses
high
You use this word too often, consider replacing it with
waves
to produce large amount of energy.

However
, a hole in the
You use this word too often, consider replacing it with
machine
should
be located
under
You use this word too often, consider replacing it with
water
surface in the
You use this word too often, consider replacing it with
wave
direction to catch
You use this word too often, consider replacing it with
waves
.
This sentence does not start with an uppercase letter.
wave
motion results in an increase in
You use this word too often, consider replacing it with
water
level inside the
You use this word too often, consider replacing it with
machine
and air flows up through holes and then
This phrase/word (depending on the context) can be potentially replaced with :
move
through turbine to generate electricity. Meanwhile, chambers on the top of above
You use this word too often, consider replacing it with
water
surface
This phrase/word (depending on the context) can be potentially replaced with :
allow
air flow to
This phrase/word (depending on the context) can be potentially replaced with :
move
the turbine and
This phrase/word (depending on the context) can be potentially replaced with :
move
down passing through another chamber to balance air pressure on the
You use this word too often, consider replacing it with
water
surface.
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IELTS academic The diagrams below show the design for a wave-energy machine and its location.

Academic
  American English
4 paragraphs
176 words
6.0
Overall Band Score
Coherence and Cohesion: 7.0
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • ?
    Include an introduction and conclusion
  • ?
    Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • ?
    Vary your linking phrases using synonyms
Lexical Resource: 5.5
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.5
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 5.0
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • ?
    Support ideas with relevant, specific examples
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  • The diagrams below show the design for a wave-energy machine and its location. Summarise the information by selecting and reporting the main features and make comparisons where relevant.