Advertisements
Advertisements
प्रश्न
Give your opinion about whether hydroelectric plants are environment friendly or not?
Advertisements
उत्तर
Advantages of Hydroelectric Power Plants:
- Hydroelectric power generation does not require the burning of fuels; therefore, it does not cause air pollution or release toxic gases.
- Electricity can be generated whenever required, provided there is sufficient water in the reservoir.
- Water is a renewable resource and is replenished through rainfall.
- Hydroelectric power is a clean and renewable energy source.
Disadvantages of Hydroelectric Power Plants:
- The construction of dams and reservoirs submerges villages and settlements, displacing people.
- Rehabilitation of displaced people often causes social and emotional problems.
- Forest areas may be submerged, resulting in loss of biodiversity.
- Dams obstruct the natural flow of rivers, affecting aquatic plants and animals.
- The large pressure exerted by stored water may increase the risk of earthquakes in some regions.
APPEARS IN
संबंधित प्रश्न
Write the energy conversion that takes place in a hydropower plant.
What type of energy is possessed by flowing water?
State two disadvantages of producing hydroelectricity.
The harnessing of which of the following leads to the destruction of large eco-systems?
(a) thermal power
(b) tidal power
(c) hydro power
(d) geothermal power
Describe the working of a hydrogen bomb.
What is common between the sun and a hydrogen bomb?
Which of the two is a cleaner fuel: hydrogen of CNG? Why?
Read the information given below and solve the questions based on it.
Electric energy is produced in various ways like hydroelectric, wind power, Solar energy, bio-fuel, etc. These energy sources are inexhaustible, sustainable. Besides, it does not cause any environmental problem.
i. Above information is about which type of energy?
ii. Whether the fossil fuel is an example of this energy?
iii. Draw the flow chart of production of electric energy.
Explain with a diagram of step-by-step energy conversion in a hydroelectric power plant.
Give a scientific reason:
Hydroelectric energy, solar energy and wind energy are called renewable energies.
Give a scientific reason:
It is possible to produce energy from mW to MW using solar photovoltaic cells.
Draw a neat and labelled diagram of energy transformation in solar thermal electric energy generation.
Kinetic energy in flowing water drives ________ to generate electricity.
Find an odd one out.
Major hydroelectric power plants in India
In a windmill, the rotating blades drive the turbine and the turbine in turn drives the generator to generate electricity.
Complete the following flow chart.

Choose the correct statement.
______ have long economic lives and low operating cost.
In a hydro power plant
