What is the main purpose of a thermal power plant?
A Generate heat
B Store energy
C Generate electricity
D Produce water
The primary purpose of a thermal power plant is to generate electricity. In this process, heat generated by burning fossil fuels such as coal or gas is used to produce steam. The steam drives turbines connected to generators, producing electricity.
Which energy source is used in hydroelectric power plants to generate electricity?
A Water
B Biomass
C Wind
D Solar
Hydroelectric power plants generate electricity by harnessing the energy of flowing or stored water. The movement of water spins turbines, which then generate mechanical energy, converted into electrical energy through generators.
Which of the following is the primary fuel used in nuclear power plants?
A Uranium
B Coal
C Natural gas
D Biomass
Uranium is the primary fuel used in nuclear power plants. Through a process called nuclear fission, uranium atoms are split, releasing a large amount of heat. This heat is used to generate steam, which powers turbines to generate electricity.
What is the main environmental advantage of using solar power?
A Fuel availability
B High efficiency
C Low cost
D No emissions
Solar power has the main environmental advantage of producing no direct emissions. Solar panels convert sunlight into electricity without releasing pollutants or greenhouse gases, making it a clean and sustainable energy source.
What type of generator is commonly used in wind power plants?
A Diesel
B Synchronous
C Induction
D Solar
Synchronous generators are typically used in wind power plants. These generators operate at a fixed speed, synchronized with the grid frequency, ensuring stable electricity generation from the kinetic energy of wind.
Which renewable energy source uses the Earth’s internal heat to generate electricity?
A Tidal
B Solar
C Geothermal
D Wind
Geothermal energy uses the heat from beneath the Earth’s surface to generate electricity. Wells are drilled into the Earth to extract steam or hot water, which drives turbines connected to generators.
What is the primary function of a cooling tower in a power plant?
A Heat dissipation
B Fuel storage
C Power generation
D Electricity distribution
Cooling towers are used to dissipate the excess heat generated in power plants. They remove heat from the water used in the cooling process by allowing it to evaporate, ensuring the plant’s components remain at optimal temperatures.
What is the key challenge in integrating renewable energy into the power grid?
A Efficiency
B Fuel availability
C Intermittency
D High cost
A key challenge in integrating renewable energy sources like wind and solar into the grid is their intermittency. These sources depend on weather conditions and time of day, making it difficult to maintain a consistent and stable electricity supply.
Which type of energy generation uses the mechanical energy from ocean tides?
A Solar
B Wave
C Wind
D Tidal
Tidal energy harnesses the mechanical energy of ocean tides. The rise and fall of the tides are used to drive turbines, which generate electricity. This renewable energy source is predictable and environmentally friendly.
What is the primary fuel used in biomass power plants?
A Natural gas
B Organic waste
C Coal
D Water
Biomass power plants use organic waste materials, such as wood, agricultural residues, or municipal solid waste, to generate heat. The heat produced is used to create steam, which drives turbines to produce electricity.
Which system is used to store excess electricity generated during off-peak times?
A Backup generator
B Inverter
C Energy storage
D Turbine
Energy storage systems, such as batteries or pumped hydro storage, store excess electricity generated during low-demand times. This stored energy can be released when demand is high, improving grid reliability and stability.
What is the purpose of grid synchronization in power plants?
A Reduce fuel consumption
B Increase efficiency
C Control emissions
D Match frequency
Grid synchronization ensures that the frequency of the electricity generated matches the grid’s frequency. This is important to maintain system stability and prevent damage to equipment when connecting power plants to the grid.
Which energy source is most commonly used for backup power systems?
A Diesel
B Geothermal
C Wind
D Solar
Diesel generators are commonly used in backup power systems because they are reliable, quick to start, and provide continuous power during electrical outages. They are used in homes, businesses, and critical infrastructure like hospitals.
Which component in power plants is responsible for turning mechanical energy into electrical energy?
A Boiler
B Condenser
C Generator
D Turbine
The generator in a power plant converts mechanical energy, usually generated by turbines driven by steam, water, or gas, into electrical energy. It does this by moving conductors through a magnetic field, inducing an electric current.
What type of renewable energy is generated by capturing the motion of the ocean’s surface?
A Biomass energy
B Wave energy
C Wind energy
D Solar energy
Wave energy captures the mechanical energy of ocean waves. Special devices are used to convert the up-and-down motion of the waves into mechanical energy, which is then converted into electricity, providing a renewable source of energy.