The correct answer is C. 60 years.
An hydroelectric power station is a power plant that uses the force of moving water to generate electricity. The water is typically collected in a reservoir behind a dam, and then released through a turbine, which spins a generator to produce electricity.
The expected useful life of an hydroelectric power station is around 60 years. This is because the dam and other infrastructure are typically very well-built and can withstand the elements for many years. Additionally, the water source is usually a renewable resource, so there is no need to worry about the power station running out of fuel.
However, there are some factors that can shorten the lifespan of an hydroelectric power station. For example, if the dam is damaged by a flood or earthquake, it may need to be repaired or replaced. Additionally, if the water source becomes polluted, it can reduce the amount of electricity that the power station can generate.
Overall, hydroelectric power stations are a very reliable and long-lasting source of electricity. With proper maintenance, they can provide clean and affordable power for many years to come.
Here is a brief explanation of each option:
- Option A: 15 years. This is too short of a lifespan for an hydroelectric power station. The average lifespan of an hydroelectric power station is around 60 years.
- Option B: 30 years. This is a more reasonable lifespan for an hydroelectric power station. However, it is still on the shorter side.
- Option C: 60 years. This is the correct answer. The expected useful life of an hydroelectric power station is around 60 years.
- Option D: 100 years. This is too long of a lifespan for an hydroelectric power station. The average lifespan of an hydroelectric power station is around 60 years.