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Process Diagram

Band 8+: The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comaprisons where relevant. Write at least 150 words.

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Image for topic: The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comaprisons where relevant. Write at least 150 words.

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The image displays a labeled diagram of the structure and operation of a hydroelectric power station, including a dam with a high-level reservoir feeding into reversible turbines that operate as a generator during the day and pump water into the high-level reservoir at night; the turbine connects to a power station that produces electricity for the national grid, and there is also a low-level reservoir beneath the power station; a specific part is labeled as intake (Day: open, Night: closed). There are no numerical data points or percentages.

Given the complexity of the image, the above description may not be entirely accurate.

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Note: Both the topic and the answer were created by one of our users.

The following diagram illustrates the process by which a hydroelectric power station generates electricity.

Overall, the power station is installed between two different levels of water so that the rotary piece of equipment can work as a turbine during the day to run the generator, and as a pump during the night to transfer water back to the high-level reservoir.

With regards to the day, the process begins by opening the intake to allow water to flow from the river to the rotary piece of equipment, causing the rotation of the shaft connecting it with the generator. Finally, electricity is transferred to the national grid through power lines.

Turning to the night, the intake is closed and the function of the rotary piece of equipment is reversed to pump water from the low-level reservoir to the high-level reservoir through the same pipe connections where water was flowing in the day.

Word Count: 150

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Overall Band Score

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Vocabulary Complexity:
C2 - Complex
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Grammar Mistakes: N/A

Vocabulary Repetition:

water: 5

power: 3

rotary: 3

piece: 3

equipment: 3

Try using synonyms for the above words

Task Response

The report provides a clear and accurate summary of the main features of the diagram, including the key processes involved in generating electricity during the day and night. The report also makes relevant comparisons between the day and night operations.

Coherence & Cohesion

The report is well-organized and easy to follow. The information is presented in a logical order, and the use of cohesive devices is effective.

Lexical Resource

The report uses a range of vocabulary related to the topic, but there is room for improvement in using more specific and sophisticated vocabulary.

Grammatical Range & Accuracy

The report demonstrates a wide range of grammatical structures and uses them accurately and appropriately.

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Band 8+: The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comaprisons where relevant. Write at least 150 words.

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Coherence & Cohesion

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Answers On The Same Topic:

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The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comaprisons where relevant. Write at least 150 words.

The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comaprisons where relevant. Write at least 150 words.

The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comaprisons where relevant. Write at least 150 words.

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