Academic Writing Task 1 Process Examples
Process Example
The diagram shows how electricity is generated in a hydroelectric power station
You should spend about 20 minutes on this task.
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 comparisons where relevant.
Write at least 150 words
Model Example Answer
The diagram illustrates the process of electricity generation in a hydroelectric power station. This power station operates using both a high-level and a low-level reservoir.
During the day, water is released from the high-level reservoir through an intake that remains open. The water flows down through a dam, driving a reversible turbine located in the power station. The turbine is connected to a generator, which converts the kinetic energy of the flowing water into electricity. This electricity is then transmitted through power lines to the national grid. The water used in this process is collected in a low-level reservoir.
At night, the process is reversed. The intake is closed, and the water from the low-level reservoir is pumped back up to the high-level reservoir using the same reversible turbines. These turbines function as pumps during the night, utilising electricity from the national grid to lift the water back up.
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