Hydrogen-based fuel-cell
The passage states that hydrogen-based fuel-cell engine is a pontential replacement for the internal combustion
engine. However, the speaker provides various problems associated with fuel-cell engine.
First, the passage points out that internal-combustion engines rely on petroleum which is a finite source.
On the other hand, hydrogen needed to run fuel-cell engines is not easily depleted. Though the speaker agrees
on this point, she argues that hydrogen has to be in its liquid state to be used as fuel. As a result, it has
to be stored at -253 degree centigrade. This requires an elaborate cooling system which is not a viable option.
Second, the passage states that internal combustion engines cause a lot of pollution as they release harmful
carbondioxide into the atmosphere. However, the speaker argues that though hydrogen-based fuel-cell engine
does not produce any harmful byproducts, the process of manufacturing the hydrogen involves burning a lot of
coal and oil in the factories. Thus, using fuel-cell engines cause pollution indirectly.
Finally, the author claims that fuel-cell engines will soon become economically competitive as they are more
efficient and require only half the fuel energy as that of internal combustion engines. But the speaker contradicts
this claim by stating that the fuel-cell engines are pretty expensive to manufacture. They are manufactured
using platinum which is very expensive metal. The speaker also points out that the experiments to use a
different material to make fuel cells have also failed.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2023-07-06 | nilav | 66 | view |
| 2022-11-29 | negooo | 80 | view |
| 2022-10-02 | Kalyani_tekade_24 | 60 | view |
| 2022-10-02 | 1ms19ec133 | 80 | view |
| 2022-09-04 | jimHsu | 80 | view |
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Grammar and spelling errors:
Line 1, column 112, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... replacement for the internal combustion engine. However, the speaker provides va...
^^^
Line 5, column 109, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...sily depleted. Though the speaker agrees on this point, she argues that hydrogen ...
^^^
Line 11, column 109, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...g the hydrogen involves burning a lot of coal and oil in the factories. Thus, usi...
^^^
Line 14, column 109, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...conomically competitive as they are more efficient and require only half the fuel...
^^^
Line 17, column 104, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...points out that the experiments to use a different material to make fuel cells ha...
^^^
Transition Words or Phrases used:
also, but, finally, first, however, if, second, so, thus, as to, as a result, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 1.0 5.04856512141 20% => OK
Conjunction : 3.0 7.30242825607 41% => More conjunction wanted.
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 22.0 30.3222958057 73% => OK
Nominalization: 7.0 5.01324503311 140% => OK
Performance on vocabulary words:
No of characters: 1341.0 1373.03311258 98% => OK
No of words: 240.0 270.72406181 89% => More content wanted.
Chars per words: 5.5875 5.08290768461 110% => OK
Fourth root words length: 3.93597934253 4.04702891845 97% => OK
Word Length SD: 3.01198704715 2.5805825403 117% => OK
Unique words: 135.0 145.348785872 93% => More unique words wanted.
Unique words percentage: 0.5625 0.540411800872 104% => OK
syllable_count: 414.9 419.366225166 99% => OK
avg_syllables_per_word: 1.7 1.55342163355 109% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 3.25607064018 154% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 14.0 13.0662251656 107% => OK
Sentence length: 17.0 21.2450331126 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 46.4153827422 49.2860985944 94% => OK
Chars per sentence: 95.7857142857 110.228320801 87% => OK
Words per sentence: 17.1428571429 21.698381199 79% => OK
Discourse Markers: 6.78571428571 7.06452816374 96% => OK
Paragraphs: 15.0 4.09492273731 366% => Less paragraphs wanted.
Language errors: 5.0 4.19205298013 119% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.425107872877 0.272083759551 156% => OK
Sentence topic coherence: 0.158824303205 0.0996497079465 159% => OK
Sentence topic coherence SD: 0.142587238121 0.0662205650399 215% => The coherence between sentences is low.
Paragraph topic coherence: 0.161940556599 0.162205337803 100% => OK
Paragraph topic coherence SD: 0.141768219527 0.0443174109184 320% => More connections among paragraphs wanted.
Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
flesch_reading_ease: 45.76 53.8541721854 85% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 14.85 12.2367328918 121% => OK
dale_chall_readability_score: 8.89 8.42419426049 106% => OK
difficult_words: 67.0 63.6247240618 105% => OK
linsear_write_formula: 7.0 10.7273730684 65% => OK
gunning_fog: 8.8 10.498013245 84% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
---------------------
Maximum four paragraphs wanted.
Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 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.