Energy Sources and Efficiency Quiz
41 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of light bulb is more efficient than traditional incandescent bulbs?

  • LED bulbs (correct)
  • Incandescent bulbs
  • Halogen bulbs
  • CFL bulbs

    • What percentage of the world's electricity is estimated to be consumed by lighting?

  • 20% (correct)
  • 40%
  • 30%
  • 10%

    • Which of the following is not a type of energy mentioned?

  • Thermal Energy (correct)
  • Geothermal Energy
  • Hydro Power
  • Wind Energy

    • How does the Sun produce energy?

    <p>Nuclear fusion reactions</p> Signup and view all the answers

    What is the efficiency percentage of traditional incandescent light bulbs?

    <p>5%</p> Signup and view all the answers

    What is the primary source of energy that powers the majority of our energy sources?

    <p>The Sun</p> Signup and view all the answers

    Which energy source is obtained from organic materials, such as plants?

    <p>Biomass Energy</p> Signup and view all the answers

    What does the net calorific value (NCV) assume about the water produced during combustion?

    <p>It leaves with the combustion products without being condensed.</p> Signup and view all the answers

    Which of the following liquid fuels has the highest gross calorific value (GCV)?

    <p>Kerosene</p> Signup and view all the answers

    What is the typical sulfur content range for residual fuel oil (furnace oil)?

    <p>2-4%</p> Signup and view all the answers

    What is a significant disadvantage of sulfur in fuel oil?

    <p>It contributes to the formation of sulfuric acid.</p> Signup and view all the answers

    What effect does excessive ash content have on combustion equipment?

    <p>It causes fouling deposits in the equipment.</p> Signup and view all the answers

    What percentage of energy consumption in the USA in 2014 came from fossil fuels?

    <p>81%</p> Signup and view all the answers

    Which of the following is considered a secondary energy source?

    <p>Electricity</p> Signup and view all the answers

    What is the primary role of fuels in energy production?

    <p>To provide heat when burned</p> Signup and view all the answers

    Which element is NOT typically found in fuels?

    <p>Oxygen</p> Signup and view all the answers

    Which statement about energy sources is correct?

    <p>Primary energy sources include fossil fuels, nuclear energy, and renewables.</p> Signup and view all the answers

    What transformation is necessary to utilize the energy of fuel effectively?

    <p>From one state to another, such as solid to gas</p> Signup and view all the answers

    Which of the following energy sources contributed least to the USA's energy consumption in 2014?

    <p>Nuclear energy</p> Signup and view all the answers

    Why is hydrogen gas considered an important secondary energy source?

    <p>It can be burnt or used in fuel cells.</p> Signup and view all the answers

    Which of the following describes the transformation of energy during combustion?

    <p>Chemical energy is converted into heat energy.</p> Signup and view all the answers

    Which of the following is classified as a renewable energy source?

    <p>Hydroelectric energy</p> Signup and view all the answers

    What distinguishes non-renewable energy sources from renewable sources?

    <p>They are finite and not sustainable.</p> Signup and view all the answers

    Which gas is NOT considered a gaseous fuel?

    <p>Solar energy</p> Signup and view all the answers

    Sustainable development primarily focuses on which of the following principles?

    <p>Using resources without depleting them for future generations.</p> Signup and view all the answers

    Which of these is an example of a non-renewable energy source?

    <p>Uranium</p> Signup and view all the answers

    What is a characteristic of renewable energy sources?

    <p>They come from persistent natural flows.</p> Signup and view all the answers

    Which of these is an example of bioenergy?

    <p>Ethanol from crops</p> Signup and view all the answers

    Blast furnace gas is typically produced in which industrial process?

    <p>Steel production</p> Signup and view all the answers

    Which of the following best describes non-renewable energy sources?

    <p>They cannot be replenished once consumed.</p> Signup and view all the answers

    What role do renewable energy sources play in sustainable development?

    <p>They contribute to long-term environmental sustainability.</p> Signup and view all the answers

    What is a significant advantage of solid fuels?

    <p>Their cost of production is low.</p> Signup and view all the answers

    Which of the following is NOT a disadvantage of solid fuels?

    <p>Burn without clinkers.</p> Signup and view all the answers

    Which of the following accurately describes a feature of liquid fuels?

    <p>They can be extinguished by stopping the liquid supply.</p> Signup and view all the answers

    What is one disadvantage of using liquid fuels?

    <p>They require specially constructed burners for efficient burning.</p> Signup and view all the answers

    Which characteristic is associated with gaseous fuels?

    <p>They occur naturally in addition to being manufactured.</p> Signup and view all the answers

    In comparison to solid fuels, liquid fuels are generally considered:

    <p>Cleaner in use.</p> Signup and view all the answers

    What is a common risk associated with liquid fuels?

    <p>They are highly inflammable and volatile.</p> Signup and view all the answers

    What is one advantage regarding the storage of liquid fuels?

    <p>They can be stored indefinitely without loss.</p> Signup and view all the answers

    Which is an undesirable aspect of solid fuel combustion?

    <p>They burn with clinkers.</p> Signup and view all the answers

    What disadvantage is specifically associated with gaseous fuels?

    <p>They are more difficult to store than liquid fuels.</p> Signup and view all the answers

    Study Notes

    Introduction to Energy Sources

    • Energy is crucial for daily life and technological advancements
    • Issues like supply and cost, and environmental impact are important
    • The chapter covers energy consumption, resources, and transformation
    • It also discusses the role of energy storage

    Energy Consumption

    • Bodily functions (heartbeat, respiration, etc.) consume ~100 J/s (100 W)
    • Physical activities, such as climbing stairs (75 kg person), use more energy
    • Average daily energy consumption for a person is ~125 W (~10 MJ)
    • Food provides this energy, a typical food item (baked beans) provides ~1.5 MJ
    • Everyday activities, such as transportation, heating, and industry, need significant energy
    • UK per person daily consumption is ~450 MJ (~125 kWh)
    • Global energy consumption has increased significantly since 1820
    • Technological advances and population growth are major contributors

    Energy Sources

    • Energy comes from various sources, including: -Fossil fuels (coal, oil, and natural gas) -Hydropower and ocean energy -Nuclear energy -Solar energy -Wind energy
    • Most energy comes, directly or indirectly from the sun
    • The global consumption of energy ~5 × 1020 J/year.
    • Energy efficiency is another key consideration

    Renewable and Non-renewable Sources

    • Renewable sources have persistent flows like solar, wind, and hydro (and some forms of bio-energy are renewable in terms of sustainable practices)
    • Nonrenewable sources are finite supplies like fossil fuels and some forms of nuclear
    • The distinction between renewable and nonrenewable sources is important for sustainability

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Energy Sources PDF - 3rd Year

    Description

    Test your knowledge on energy sources, efficiency of light bulbs, and various fuels. This quiz covers questions on the consumption of electricity by lighting, the energy production of the Sun, and the characteristics of different fuels. Challenge yourself to discover how much you know about energy and its impact on the environment.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser