Tag: towards green energy

Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human time scale such as sunlight, wind, rain, tides, waves and geothermal heat. Hence, Sun is naturally coming and can be used in the form of solar energy, to evaporate water which turns into rain and rains are useful in many uses. Ultimately, Sun is the renewable source of energy.

Renewable- (b), (c) and (e); Non-renewable- (a), (d) and (f).
Here once petrol,diesel, coal and oil are consumed, for example in our vehicle, it cannot come back and renew to some other thing where as in wood, wind and water once we use it for some purpose we can use it for some other thing again like if wood is used in making bed then again we can make it back to wood or some other thing. Hence, these are renewable sources.

Unlike fossil fuels, trees are eternal sources of energy for animals. They absorb sunlight directly from the environment and keep on producing food for others as long as they exist.

Renewable-(b), (c) and (e); Non-renewable-(a), (d) and (f).
Here once petrol, diesel, coal and oil are consumed, for example in our vehicle, it cannot come back and renew to some other thing whereas in wood, wind and water once we use it for some purpose we can use it for some other thing again like if wood is used in making bed then again we can make it back to wood or some other thing. Hence, these are renewable sources.

Answer is D.

The heat produced by either steam or coal is converted in to electrical energy. Thus, in a thermal power station, heat energy is converted to electrical energy.

Coolant is used to remove the heat produced from the reactor core. This heat is then transferred to the electrical generators or the environment. Water, liquid sodium, helium and carbon dioxide are most commonly used coolants.