Which of the following is the primary function of a solar power plant?
A Burn coal
B Convert sunlight
C Use wind
D Generate heat
Solar power plants primarily use photovoltaic (PV) cells to convert sunlight directly into electricity. These cells absorb sunlight and generate an electric current through the photovoltaic effect, which is then used to power electrical systems.
What is the main component used in wind power plants to convert wind energy?
A Turbine
B Battery
C Solar panel
D Boiler
Wind power plants use turbines to convert the kinetic energy of the wind into mechanical energy. As the wind blows, it causes the turbine blades to spin, and this mechanical energy is converted into electrical energy through a generator.
What is the primary energy source for wind turbines?
A Sunlight
B Water
C Geothermal
D Wind
Wind turbines rely on the kinetic energy of moving air (wind) to generate electricity. Wind flow turns the blades of the turbine, and this mechanical energy is converted into electrical energy through a generator.
What is the most significant advantage of solar power?
A High efficiency
B Continuous production
C No emissions
D Low cost
Solar power is a clean and renewable energy source with no emissions during energy production. It helps reduce the carbon footprint and does not contribute to air pollution or greenhouse gas emissions, unlike fossil fuels.
Which of the following technologies is used to harness solar energy for electricity?
A Boilers
B Photovoltaic cells
C Hydropower
D Wind turbines
Photovoltaic (PV) cells are used in solar power systems to convert sunlight directly into electricity. When sunlight hits the cells, it excites electrons, generating an electrical current that can be used to power devices and systems.
Which type of power plant generates electricity by harnessing ocean wind?
A Hydropower
B Wind power
C Solar
D Geothermal
Wind power plants harness the energy of the wind to generate electricity. Offshore wind farms, in particular, capitalize on the strong and consistent winds over the ocean to generate large amounts of renewable energy.
Which power generation method uses the Earth’s internal heat?
A Biomass
B Solar
C Wind
D Geothermal
Geothermal power plants use the heat stored beneath the Earth’s surface to generate electricity. The heat is accessed by drilling deep into the Earth’s crust, where steam is used to drive turbines and produce electrical power.
What is the primary disadvantage of solar power?
A Intermittency
B No emissions
C High efficiency
D Low cost
A major disadvantage of solar power is its intermittency. Solar panels only generate electricity during daylight hours and depend on weather conditions. Energy storage solutions are needed to provide continuous power when sunlight is unavailable.
Which part of the wind turbine is responsible for capturing the wind’s energy?
A Tower
B Generator
C Nacelle
D Blades
The blades of a wind turbine capture the kinetic energy of the wind. As the wind blows, it causes the blades to rotate, and this motion is converted into mechanical energy, which drives a generator to produce electricity.
What is a key challenge in the widespread adoption of solar power?
A Fuel cost
B Energy storage
C Wind speed
D Fuel efficiency
A key challenge in adopting solar power is efficient energy storage. Since solar power is intermittent, storing excess energy generated during the day for use at night or during cloudy periods requires effective battery storage systems.
What is the primary reason wind power is considered a renewable energy source?
A Wind turbines last forever
B No emissions
C Wind is abundant
D No fuel is required
Wind power is considered a renewable energy source because wind is abundant and naturally replenished. As long as the Earth continues to have atmospheric movement, wind will remain a sustainable and inexhaustible energy source.
Which renewable energy source depends on the sun’s radiation?
A Biomass
B Wind
C Geothermal
D Solar
Solar power depends on the sun’s radiation, which is captured using photovoltaic cells or solar thermal systems. The energy from the sun is converted into electricity, making it a renewable and sustainable energy source.
Which of these energy sources is most affected by location for effective energy generation?
A Biomass
B Wind
C Solar
D Geothermal
Wind energy generation is highly location-dependent. Areas with consistent, strong winds are ideal for wind turbines. Locations without sufficient wind speeds will not be able to generate energy efficiently, reducing the effectiveness of wind power systems.
What does a wind turbine’s generator convert?
A Mechanical energy
B Thermal energy
C Electrical energy
D Solar energy
The generator in a wind turbine converts the mechanical energy produced by the rotation of the turbine blades into electrical energy. The mechanical energy is transferred through a shaft to the generator, which then produces electricity.
Which of the following is an environmental benefit of using wind power?
A Fuel consumption
B Land use
C Low emissions
D High efficiency
Wind power is a clean energy source with very low emissions. It does not produce greenhouse gases during electricity generation, making it an environmentally friendly alternative to fossil fuel-based power generation.