Question

What is meant by hydroelectric energy?
1. Solar energy
2. Nuclear power
3. Water energy
4. Wind power

Answer 1

Correct Answer - Option 3 : Water energy

Concept:

Hydroelectric Power Plant:

• The electricity produced from the kinetic energy of flowing water is called hydroelectricity and a plant that generates electricity on a large scale from flowing water is called a hydroelectric power plant.
• The requirements for a hydroelectric power plant are a strong, fast flow of water and a significant drop down in which the water can fall.

 

Explanation:

• In a hydroelectric power plant, more electrical power can be generated, if water falls from a greater height because the rise in water level causes the increase in potential energy of water.
• Thus, when it flows from a higher position more amount of kinetic energy is formed by the conversion of higher potential energy and this kinetic energy in the form of moving water can produce more electrical power.

 

• The Hydroelectric power plant uses the hydropower system to generate electricity i.e. it does not require fuel to generate electricity.
• In a Solar Power Plant, the energy of the sunlight is used to generate electricity.
• In a Thermal or Steam Power Plant, the energy of the fossil fuels such as coal, diesel etc is used to generate electricity.
• In a Nuclear Power Plant, nuclear fuel such as uranium is used to generate electricity.