Whether hydrogen fuel-cell engines are better substitute for internal-combustion engines or not?
The reading specifies that there are three main reasons to support the idea that fuel cell engine are more advantageous compared to internal combustion engines, however, the lecturer casts doubt on this claim and brings up three reasons to reject the specific points made in the reading passage.
First of all, the author asserts that internal combustion engine relies on petroleum and gasoline which have finite sources whereas hydrogen sources are not limited. Nevertheless, the lecturer states that the hydrogen for fuel-cell is not accessible easily. Pure liquid should be obtained by some complex processes. Achievement to technology of manufacturing and storing the fuel is really sophisticated.
Second, based on the reading, hydrogen based engines are attractive since it can solve pollution problems derived from internal combustion engines. On the contrary, the lecturer contradicts the idea that fuel-cell cannot solve pollution problem. In fact, they need some purification process before usage. This process require energy which obtain from combustion of oil and gasoline. Hence, they in turn produce pollution as well.
Third, the reading proposes that fuel-cell will be economically competitive soon. People spend less money for them compared to previous methods. In contrast, the lecturer dismisses the idea due to manufacturing process of fuel-cell is too expensive. Some scarce metal is used in fuel cell engines. Also, providing electrical power by hydrogen is not possible.
Therefore, the points mentioned in the reading do not make sense.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2016-07-21 | Vida Pashaei | 86 | view |
| 2016-07-21 | Vida Pashaei | 86 | view |
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Grammar and spelling errors:
Line 9, column 67, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ioned in the reading do not make sense.
^^^
Discourse Markers used:
['also', 'first', 'hence', 'however', 'if', 'nevertheless', 'really', 'second', 'so', 'therefore', 'third', 'well', 'whereas', 'in contrast', 'in fact', 'first of all', 'on the contrary']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.303370786517 0.261695866417 116% => OK
Verbs: 0.164794007491 0.158904122519 104% => OK
Adjectives: 0.0749063670412 0.0723426182421 104% => OK
Adverbs: 0.0674157303371 0.0435111971325 155% => OK
Pronouns: 0.0149812734082 0.0277247811725 54% => OK
Prepositions: 0.101123595506 0.128828473217 78% => OK
Participles: 0.0486891385768 0.0370669169778 131% => OK
Conjunctions: 2.77275873365 2.5805825403 107% => OK
Infinitives: 0.0224719101124 0.0208969081088 108% => OK
Particles: 0.00374531835206 0.00154638098197 242% => OK
Determiners: 0.0861423220974 0.128158765124 67% => OK
Modal_auxiliary: 0.0149812734082 0.0158828679856 94% => OK
WH_determiners: 0.0112359550562 0.0114777025283 98% => OK
Vocabulary words and sentences:
No of characters: 1572.0 1645.83664459 96% => OK
No of words: 237.0 271.125827815 87% => OK
Chars per words: 6.63291139241 6.08160592843 109% => OK
Fourth root words length: 3.92362132708 4.04852973271 97% => OK
words length more than 5 chars: 0.464135021097 0.374372842146 124% => OK
words length more than 6 chars: 0.367088607595 0.287516216867 128% => OK
words length more than 7 chars: 0.274261603376 0.187439937562 146% => OK
words length more than 8 chars: 0.15611814346 0.113142543107 138% => OK
Word Length SD: 2.77275873365 2.5805825403 107% => OK
Unique words: 141.0 145.348785872 97% => OK
Unique words percentage: 0.594936708861 0.539623497131 110% => OK
Word variations: 60.2695615953 53.8517498576 112% => OK
How many sentences: 16.0 13.0529801325 123% => OK
Sentence length: 14.8125 21.7502111507 68% => OK
Sentence length SD: 60.5567592738 49.3711431718 123% => OK
Chars per sentence: 98.25 132.220823453 74% => OK
Words per sentence: 14.8125 21.7502111507 68% => OK
Discourse Markers: 1.0625 0.878197800319 121% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 1.0 3.39072847682 29% => OK
Readability: 51.5213607595 50.5018328374 102% => OK
Elegance: 1.83333333333 1.90840788429 96% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.232079425278 0.549887131256 42% => OK
Sentence sentence coherence: 0.0651560333194 0.142949733639 46% => Sentence sentence coherence is low.
Sentence sentence coherence SD: 0.0722023080721 0.0787303798458 92% => OK
Sentence paragraph coherence: 0.498419417694 0.631733273073 79% => OK
Sentence paragraph coherence SD: 0.224564983276 0.139662658121 161% => OK
Sentence topic coherence: 0.0852050183005 0.266732575781 32% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0751383875674 0.103435571967 73% => OK
Paragraph paragraph coherence: 0.243121212915 0.414875509568 59% => OK
Paragraph paragraph coherence SD: 0.0434490130583 0.0530846634433 82% => OK
Paragraph topic coherence: 0.142425742143 0.40443939384 35% => OK
Paragraph topic coherence SD: 0.0563874902428 0.0528353158467 107% => OK
Task Achievement:
Sentences with positive sentiment : 7.0 4.33554083885 161% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => OK
Sentences with neutral sentiment: 7.0 4.26048565121 164% => OK
Positive topic words: 5.0 3.49668874172 143% => OK
Negative topic words: 2.0 3.62251655629 55% => OK
Neutral topic words: 4.0 3.1766004415 126% => OK
Total topic words: 11.0 10.2958057395 107% => OK
What are sentences with positive/Negative/neutral sentiment?
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Rates: 86.6666666667 out of 100
Scores by essay e-grader: 26.0 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.