12 Questions
What is hydroelectricity primarily generated from?
The energy released when water falls from a great height
What is a major benefit of multi-purpose river valley projects?
Control of floods and prevention of soil erosion
What determines the total power generation capacity of a hydroelectric power plant?
The head of water and volume of water flowing towards the water turbine
Why is hydroelectricity considered a renewable energy source?
Because it produces no waste
What is the main purpose of constructing a dam in hydroelectric power generation?
To collect and store water
What happens to the blades of the turbine when water falls from a great height?
They move with the force of falling water
What is a characteristic of Hydel power that makes it a clean source of energy?
It does not produce harmful wastes or poisonous bi-products
What is a disadvantage of building a large dam for Hydel power?
It can cause serious geological damage like triggering earthquakes
What is the name of the reservoir of Bhakra dam?
Gobind Sagar
What is the combined installed capacity of the Power House at Bhakra Nangal dam?
1204 mw
Which of the following is not a part of the Bhakra Nangal project?
Thermal power plant
Which state is not involved in the Bhakra Nangal project?
Uttar Pradesh
Study Notes
Hydel Power
- Hydel power, also known as hydroelectricity, is electricity generated from water.
- It is produced by harnessing the energy released when water falls from a high level with great force.
- The process involves constructing a dam to collect water, which is then allowed to fall from a height, moving the blades of a turbine, and ultimately rotating a generator to produce electricity.
Multi-Purpose River Valley Projects
- These projects involve building dams on rivers to block water for various purposes, including domestic use, irrigation, navigation, and hydroelectric power generation.
- They also help prevent soil erosion and control floods.
Power Generation Capacity
- The total power generation capacity of hydroelectric power plants depends on the head of water and the volume of water flowing towards the water turbine.
Advantages of Hydel Power
- Hydel power is a clean, non-polluting source of energy.
- It does not produce any greenhouse gases or harmful waste.
- It is a renewable source of energy that can be used again and again.
- Dams built to produce hydroelectricity help to save and restore water.
- It is economical and sustainable as it saves on fossil fuels and is cheaper than electricity produced from fossil fuels and nuclear power.
Disadvantages of Hydel Power
- The cost of building dams for producing hydroelectricity is quite high.
- Building a large dam can alter the natural water-table level and cause serious geological damage like triggering earthquakes.
- It can also displace many people from the area, disturbing their life physically, mentally, and psychologically.
Bhakra Nangal Dam
- The Bhakra Nangal Project is a joint venture of Punjab, Haryana, and Rajasthan Governments.
- The project comprises two dams, one at Bhakra and another at Nangal, along with a hydel plant, power houses, and a canal system.
- The Bhakra Dam is the second highest dam in India, built across the Sutlej River, and has a reservoir named Gobind Sagar with a storage capacity of 9.3 billion cubic meters.
- The Nangal Dam supplies water to Bhakra irrigation canals and has a power house with an installed capacity of 1204 mw.
- The Bhakra Canal System provides irrigation facilities to farms in Haryana, Punjab, and Rajasthan.
Learn about hydel power, also known as hydroelectricity, and multi-purpose river valley projects that involve building dams on rivers to generate electricity and more.
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