The diagram shows how electricity is generated by a hydroelectric dam.
Write a 150-word report for a university lecturer explaining how the process works.(STUDY SAMPLE)
The diagram illustrates the basic principles of hydroelectric power. The process requires the construction of a large dam connected to a powerhouse. The dam creates a large reservoir and the powerhouse is where the electricity is generated.
First of all, water trapped in the reservoir behind the dam is forced through an intake. It then flows into a narrow chamber called a penstock, where the resulting high pressure turns a turbine. The turbine is connected to a generator in the powerhouse above, and this is where the movement of the turbine is converted into electricity. The resulting electricity leaves the powerhouse via cables that carry it over long distances to where it can be used.
It is interesting to note that a hydroelectric dam creates no harmful byproducts and relies entirely on natural forces to produce electricity. After the turbine stage, water flows out through a second channel and into a river. The process is renewable, thanks to the water cycle in nature.
- The chart below gives information on the global sale of hybrid vehicles * between 2006 and 2009.Summarize the information by selecting and reporting the main features, and make comparisons where relevant.*vehicles that use both fuel and electricity 55
- The table below shows information about travelling to work in one US city.Summarize the information by selecting and reporting the main features, and make comparisons where relevant. 60
- Hydro-electric power generation 67
- It is generally believed that some people are born with certain talents, for instance for sport or music, and others are not. However, it is sometimes claimed that any child can be tough to become a good sports person or musician.Discuss both views and gi 50
- Schools should ask students to evaluate their teachers 74
Attribute Value Ideal
Score: 6.5 out of 9
Category: Good Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 10 10
No. of Words: 163 200
No. of Characters: 808 1000
No. of Different Words: 86 100
Fourth Root of Number of Words: 3.573 4.0
Average Word Length: 4.957 4.6
Word Length SD: 2.931 2.4
No. of Words greater than 5 chars: 60 60
No. of Words greater than 6 chars: 48 50
No. of Words greater than 7 chars: 31 40
No. of Words greater than 8 chars: 26 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 16.3 21.0
Sentence Length SD: 4.518 7.5
Use of Discourse Markers (%): 0.3 0.12
Sentence-Text Coherence: 0.381 0.35
Sentence-Para Coherence: 0.571 0.50
Sentence-Sentence Coherence: 0.082 0.07
Number of Paragraphs: 3 4