The picture illustrates how a hydroelectric power station works and generates electricity.
In general, hydroelectric power station is a reversible process that involves several stages from water in a river to electrical energy in the national grid.
At the beginning of the process, water in the river is kept in a high-level reservoir by a dam which can be opened or closed by time. At day, when an intake is opened, water in the high-level reservoir flows downward and rotates turbines in the power station located in lower-level position. In the subsequent step, reversible turbines in forward direction operate a generator which produces electricity leading by power line to the national grid. On the other hand, water after rotating turbines flows to a low-level reservoir to be stored for a reversing process.
Following that, at night, water in the low-level reservoir flows in a backward direction to the power station. The reversible turbines in the station take responsibility to pump water upstream into the high-level reservoir when the intake is closed.
- Some people say that the main environmental problem of our time is the loss of particular species of plants and animals others say that there are more important environment problems Discuss both views and give your opinion 67
- Road access to a city hospital 61
- Some people say that the main environmental problem of our time is the loss of particular species of plants and animals others say that there are more important environment problems Discuss both views and give your opinion 67
- The plans below show a public park when it first opened in 1920 and the same park today Summarise the information by selecting and reporting the main features and make comparisons where relevant 78
- The plans below show the layout of a university s sport center now and how it will look after redevelopment 67
Transition Words or Phrases used:
in general, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 7.0 86% => OK
Auxiliary verbs: 1.0 1.00243902439 100% => OK
Conjunction : 3.0 6.8 44% => More conjunction wanted.
Relative clauses : 6.0 3.15609756098 190% => OK
Pronoun: 2.0 5.60731707317 36% => OK
Preposition: 30.0 33.7804878049 89% => OK
Nominalization: 8.0 3.97073170732 201% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 900.0 965.302439024 93% => OK
No of words: 171.0 196.424390244 87% => More content wanted.
Chars per words: 5.26315789474 4.92477711251 107% => OK
Fourth root words length: 3.61617157096 3.73543355544 97% => OK
Word Length SD: 3.02243585507 2.65546596893 114% => OK
Unique words: 88.0 106.607317073 83% => More unique words wanted.
Unique words percentage: 0.514619883041 0.547539520022 94% => More unique words wanted or less content wanted.
syllable_count: 292.5 283.868780488 103% => OK
avg_syllables_per_word: 1.7 1.45097560976 117% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 1.53170731707 0% => OK
Article: 2.0 4.33902439024 46% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 6.0 3.36585365854 178% => OK
Performance on sentences:
How many sentences: 8.0 8.94146341463 89% => OK
Sentence length: 21.0 22.4926829268 93% => OK
Sentence length SD: 23.1540358253 43.030603864 54% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 112.5 112.824112599 100% => OK
Words per sentence: 21.375 22.9334400587 93% => OK
Discourse Markers: 3.625 5.23603664747 69% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 0.0 1.69756097561 0% => OK
Sentences with positive sentiment : 2.0 3.70975609756 54% => More positive sentences wanted.
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 6.0 4.09268292683 147% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.127770194278 0.215688989381 59% => OK
Sentence topic coherence: 0.0777060613198 0.103423049105 75% => OK
Sentence topic coherence SD: 0.0755632440212 0.0843802449381 90% => OK
Paragraph topic coherence: 0.123632632639 0.15604864568 79% => OK
Paragraph topic coherence SD: 0.0751126385761 0.0819641961636 92% => OK
Essay readability:
automated_readability_index: 14.0 13.2329268293 106% => OK
flesch_reading_ease: 41.7 61.2550243902 68% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 12.7 10.3012195122 123% => OK
coleman_liau_index: 13.23 11.4140731707 116% => OK
dale_chall_readability_score: 8.37 8.06136585366 104% => OK
difficult_words: 40.0 40.7170731707 98% => OK
linsear_write_formula: 12.0 11.4329268293 105% => OK
gunning_fog: 10.4 10.9970731707 95% => OK
text_standard: 14.0 11.0658536585 127% => OK
What are above readability scores?
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Rates: 67.4157303371 out of 100
Scores by essay e-grader: 6.0 Out of 9
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.