What type of energy do solar cells convert?

D. Solar (Sun's) energy to electrical energy

A. Chemical energy to electrical energy

B. Electrical energy to light energy

C. Mechanical energy to electrical energy

D. Solar (Sun's) energy to electrical energy

What is the main function of turbines in a hydroelectric power plant?

B. To move generators to produce electricity

A. To store water for later use

B. To move generators to produce electricity

C. To filter impurities from water

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Methods of Electric Energy MCQs with Answers

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Methods of Electric Energy Production MCQs (1–10)

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1.
Past Paper MCQ
Solar plate consist of which type of cell?
Correct Answer: D. Photo voltaic cell
One-liner
A solar plate consists of photo voltaic cells, which convert sunlight directly into electricity.
2.
Past Paper MCQ
What type of energy do solar cells convert?
Correct Answer: D. Solar (Sun's) energy to electrical energy
One-liner
Solar cells convert solar (Sun's) energy to electrical energy through the photovoltaic effect.
3.
Past Paper MCQ
What is the primary use of heavy water in an atomic reactor?
Correct Answer: B. Moderator
One-liner
Heavy water (D₂O) is primarily used as a moderator in atomic reactors to slow down fast neutrons so they can sustain the nuclear fission chain reaction.
4.
What is the main function of turbines in a hydroelectric power plant?
Correct Answer: B. To move generators to produce electricity
One-liner
The main function of turbines in a hydroelectric power plant is to move generators to produce electricity.
5.
Which device converts the energy of light directly into electricity?
Correct Answer: A. Solar cell
One-liner
A solar cell (also called a photovoltaic cell) converts light energy directly into electrical energy through the photovoltaic effect.
6.
Which element is used in solar panels for producing electricity?
Correct Answer: B. Silicon
One-liner
Solar panels use Silicon as the primary semiconductor material for converting sunlight into electricity.
7.
Which form of energy can be converted to electrical energy in power plants?
Correct Answer: A. Chemical energy
One-liner
In power plants, chemical energy stored in fuels like coal, oil, and natural gas is converted into electrical energy through combustion and turbine-driven generators.
8.
Which isotope of uranium is fissionable and used for nuclear power?
Correct Answer: C. Uranium-235
One-liner
The fissionable isotope of uranium used for nuclear power is Uranium-235.
9.
What is burned in a thermal power station to produce steam?
Correct Answer: A. Fossil fuels
One-liner
In a thermal power station, fossil fuels (such as coal, oil, or natural gas) are burned to produce steam that drives turbines for electricity generation.
10.
What percentage of all renewable electricity generated in the world comes from hydropower?
Correct Answer: D. 71%
One-liner
Hydropower accounts for approximately 71% of all renewable electricity generated globally, making it the largest renewable energy source for power generation.

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Methods of Electric Energy MCQs with Answers

Methods of Electric Energy Production MCQs (1–10)

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