the fuel-cell engines
The reading passage explains that because of the merits of the Fuel- cell engines, they will be replaced instead of internal-combustion engines. The professor casts doubts on advantages of fuel-cell engines and admits that these kinds of engines have lots of problems.
First, the reading passage discusses that petroleum which is used by internal- combustion engine is a finite resource but fuel-cell engine uses hydrogen that is easily available. The lecturer rejects this idea an claims that hydrogen is not exactly available, because it must first obtained in pure form but producing and storing liquid hydrogen would be possible in very low temperature.
Next, in the reading passage it is mentioned that hydrogen- based fuel cells will solve pollution problems. The professor rebuts this issue and claims that producing and purification of hydrogen are needed to burn coal or oil that will increase pollution.
Last, the reading passage says that fuel- cell engines will be competitive because they will need less money to operate than internal-combustion engines. The professor however, rebuts this and points out that in these kinds of engines platinum is used which is a rare and expensive metal and replacing it with another metal is impossible.
Grammar and spelling errors:
Line 2, column 210, Rule ID: EN_A_VS_AN
Message: Use 'a' instead of 'an' if the following word doesn't start with a vowel sound, e.g. 'a sentence', 'a university'
Suggestion: a
...ailable. The lecturer rejects this idea an claims that hydrogen is not exactly ava...
^^
Line 2, column 210, Rule ID: A_PLURAL[1]
Message: Don't use indefinite articles with plural words. Did you mean 'an claim' or simply 'claims'?
Suggestion: an claim; claims
...ailable. The lecturer rejects this idea an claims that hydrogen is not exactly available,...
^^^^^^^^^
Discourse Markers used:
['but', 'first', 'however', 'if', 'so']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.286384976526 0.261695866417 109% => OK
Verbs: 0.178403755869 0.158904122519 112% => OK
Adjectives: 0.0845070422535 0.0723426182421 117% => OK
Adverbs: 0.0328638497653 0.0435111971325 76% => OK
Pronouns: 0.0234741784038 0.0277247811725 85% => OK
Prepositions: 0.12676056338 0.128828473217 98% => OK
Participles: 0.0516431924883 0.0370669169778 139% => OK
Conjunctions: 2.8720692186 2.5805825403 111% => OK
Infinitives: 0.0093896713615 0.0208969081088 45% => Some infinitives wanted.
Particles: 0.00469483568075 0.00154638098197 304% => OK
Determiners: 0.0892018779343 0.128158765124 70% => OK
Modal_auxiliary: 0.0328638497653 0.0158828679856 207% => OK
WH_determiners: 0.018779342723 0.0114777025283 164% => OK
Vocabulary words and sentences:
No of characters: 1258.0 1645.83664459 76% => OK
No of words: 199.0 271.125827815 73% => More content wanted.
Chars per words: 6.3216080402 6.08160592843 104% => OK
Fourth root words length: 3.75589349951 4.04852973271 93% => OK
words length more than 5 chars: 0.402010050251 0.374372842146 107% => OK
words length more than 6 chars: 0.326633165829 0.287516216867 114% => OK
words length more than 7 chars: 0.221105527638 0.187439937562 118% => OK
words length more than 8 chars: 0.140703517588 0.113142543107 124% => OK
Word Length SD: 2.8720692186 2.5805825403 111% => OK
Unique words: 113.0 145.348785872 78% => More unique words wanted.
Unique words percentage: 0.56783919598 0.539623497131 105% => OK
Word variations: 52.1127826249 53.8517498576 97% => OK
How many sentences: 8.0 13.0529801325 61% => OK
Sentence length: 24.875 21.7502111507 114% => OK
Sentence length SD: 31.4580573939 49.3711431718 64% => OK
Chars per sentence: 157.25 132.220823453 119% => OK
Words per sentence: 24.875 21.7502111507 114% => OK
Discourse Markers: 0.625 0.878197800319 71% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 3.39072847682 59% => OK
Readability: 57.5383165829 50.5018328374 114% => OK
Elegance: 1.98 1.90840788429 104% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.35863413057 0.549887131256 65% => OK
Sentence sentence coherence: 0.167300126477 0.142949733639 117% => OK
Sentence sentence coherence SD: 0.112266267366 0.0787303798458 143% => OK
Sentence paragraph coherence: 0.726748553349 0.631733273073 115% => OK
Sentence paragraph coherence SD: 0.0935227619227 0.139662658121 67% => OK
Sentence topic coherence: 0.207342367742 0.266732575781 78% => OK
Sentence topic coherence SD: 0.149072486947 0.103435571967 144% => OK
Paragraph paragraph coherence: 0.263543714001 0.414875509568 64% => OK
Paragraph paragraph coherence SD: 0.0832473251882 0.0530846634433 157% => OK
Paragraph topic coherence: 0.251364515901 0.40443939384 62% => OK
Paragraph topic coherence SD: 0.140714100509 0.0528353158467 266% => OK
Task Achievement:
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 1.0 4.26048565121 23% => More neutral sentences wanted.
Positive topic words: 4.0 3.49668874172 114% => OK
Negative topic words: 3.0 3.62251655629 83% => OK
Neutral topic words: 1.0 3.1766004415 31% => OK
Total topic words: 8.0 10.2958057395 78% => OK
What are sentences with positive/Negative/neutral sentiment?
---------------------
Minimum 200 words wanted.
Rates: 60.0 out of 100
Scores by essay e-grader: 18.0 Out of 30
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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.