Discussion & Review 🎈 🎏 🎀 🪄 🪅 🎊 🎉

Which among the following is the main drawback of renewable energy?

• Pollution

• Accessible only in a few places

• High maintenance cost

• Unreliable supply

Answer explanation

Renewable energy frequently depends on the weather for its sources of power. Like, rain is required to fill the dams with a hydro generator and thus provide electricity. To turn the blades of the wind turbines, the wind is required.

In a Solar cell, which of the following effects is responsible for converting light energy into electrical energy?

• Physical effect

• Atmospheric effect

• Magnetic effect

• Photovoltaic effect

Answer explanation

When a photovoltaic cell is exposed to sunlight, a photovoltaic effect occurs that generates a voltage or electric current by converting light energy into electrical energy.

• Photovoltaic: relating to the production of electricity at the meeting point of two substances that have been exposed to light

Wood is a renewable resource.

• True

• False

For the production of power throughout the year in a hydroelectric power plant, which among the following is the most necessary entity?

• Dams full of water

• Large quantity of air

• Highly concentrated sunlight

• Nuclear power

Answer explanation

Since the dam feeds water directly to the turbines, which are retained in a power station, it is necessary to keep the reservoir water at a higher level than the turbines.

Which among the following statements is false about renewable energy?

• Renewable energy does not cause pollution

• Transportation of renewable energy is difficult

• Renewable energy causes ecological imbalance

• Renewable energy has a low gestation period

Which of the following energy resources have been used for many decades?

• Fuel cells

• Primary energy sources

• Non-conventional energy sources

• Conventional energy sources

Answer explanation

Conventional sources of energy like coal, petroleum, firewood, etc., have been used conventionally for a long time.

Which of the following energy sources provide energy in a dilute form?

• Renewable

• Nuclear energy source

• Conventional energy source

• Non-renewable

As compared to the traditional generators, renewable energy plants require _____.

• Less fuel

• More Uranium

• Less maintenance

• Higher operating cost

Answer explanation

Compared to traditional fossil fuel generators, renewable energy plants require very fewer operating costs. Therefore, after installation, renewable energy plants require very less maintenance. For operations, a very negligible amount of fuel is required by them

Which one of the following energy uses windmills for mechanical power?

• Solar energy

• Biomass and biofuel

• Hydropower

• Wind power

________________ are the renewable energy resources

• Solar

• Wave

• Wind

• All are correct ^^