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Energy Sources and Classification

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Questions and Answers

Why are technologies able to utilize renewable energy sources like solar, wind, and biomass uneconomic at present?

Owing to the diffuse or intermittent nature of the sources (correct)

Because of the lack of advanced technology

Due to environmental concerns

Due to high maintenance costs

What is a fuel?

A substance that produces mechanical energy

A substance that produces electrical energy

A substance that produces useful energy either through combustion or through nuclear reaction (correct)

A substance that produces chemical energy

What is energy usually defined as?

The capacity to generate heat

The capacity to produce electricity

The capacity to do work (correct)

The capacity to create motion

What type of fuels produce heat energy by combustion?

Chemical fuels Signup and view all the answers

Which of the following is an example of a nonrenewable energy source?

Natural gas Signup and view all the answers

On what basis can fuels be classified?

On the basis of their occurrence and physical state Signup and view all the answers

What is the primary reason why fossil fuels are relied upon heavily?

They are energy dense and widespread Signup and view all the answers

What are primary fuels also known as?

Natural fuels Signup and view all the answers

Which of the following is NOT a source of renewable energy?

Uranium Signup and view all the answers

What type of fuel is coke?

Secondary fuel Signup and view all the answers

What is the primary concern surrounding the use of fossil fuels?

They contribute to global warming Signup and view all the answers

What is the term for energy sources that are continuously replenished or inexhaustible?

Renewable energy sources Signup and view all the answers