Which energy source is used in a thermal power plant to produce steam?
A Solar
B Coal
C Gas
D Wind
In thermal power plants, coal is commonly used as a fuel source to produce heat. The heat generated from burning coal turns water into steam, which drives turbines connected to generators for electricity production.
Which renewable energy source uses the gravitational force of the moon to generate power?
A Tidal
B Biomass
C Solar
D Wind
Tidal power generation uses the gravitational pull of the moon, causing ocean tides to move. These tidal movements are harnessed through turbines to generate electricity, providing a renewable, predictable energy source.
What type of generator is most commonly used in hydroelectric plants?
A Wind turbine
B Diesel generator
C Gas turbine
D Hydrogenerator
Hydroelectric power plants use hydrogenerators to convert the mechanical energy from flowing water into electricity. Water flowing from a height spins the turbine, which powers the generator, producing electrical energy.
What is the main function of a transformer in a power plant?
A Fuel combustion
B Heat production
C Voltage conversion
D Power generation
Transformers in power plants are used to step up or step down the voltage levels of electricity to ensure efficient transmission over long distances. Higher voltage reduces energy losses during transmission.
Which power source is used in geothermal power plants?
A Tidal energy
B Heat from Earth
C Solar radiation
D Wind energy
Geothermal power plants use the heat stored beneath the Earth’s surface. Steam from underground reservoirs is used to drive turbines, which in turn generate electricity. It is a sustainable and renewable energy source.
What type of energy is converted into electricity in wind turbines?
A Chemical
B Light
C Kinetic
D Heat
Wind turbines convert the kinetic energy of moving air (wind) into mechanical energy. This mechanical energy turns the blades of the turbine, which drives a generator to produce electricity.
Which type of power plant uses the energy from the sun to generate electricity?
A Wind
B Solar
C Hydro
D Geothermal
Solar power plants use photovoltaic cells or solar thermal systems to capture sunlight and convert it into electricity. Solar panels absorb sunlight and generate electrical power through the photovoltaic effect.
Which renewable energy source involves burning organic materials to produce energy?
A Wind
B Tidal
C Geothermal
D Biomass
Biomass energy is produced by burning organic materials such as wood, agricultural waste, or animal manure. The combustion process produces heat, which is used to generate steam and drive turbines for electricity production.
Which component in a power plant helps in regulating the temperature of turbines?
A Cooling system
B Boiler
C Generator
D Turbine
Cooling systems in power plants regulate the temperature of turbines and generators. These systems dissipate excess heat from the machinery, preventing overheating and ensuring the plant operates efficiently.
Which factor affects the efficiency of energy conversion in power plants?
A Wind speed
B Fuel type
C Water usage
D Air pressure
The type of fuel used in a power plant significantly affects its efficiency. Different fuels have varying energy content and combustion efficiencies, which influence the amount of energy that can be converted into electricity.
Which technology is used to store excess electricity in power plants?
A Inverter
B Solar panel
C Battery
D Generator
Batteries are often used to store excess electricity generated during periods of low demand. This stored electricity can be released when demand increases, improving the reliability and stability of the power grid.
What is the main purpose of grid synchronization in power generation?
A Temperature control
B Energy storage
C Fuel combustion
D Frequency matching
Grid synchronization ensures that the electricity generated by power plants matches the grid’s frequency. This process is crucial to avoid power fluctuations, which could damage equipment or disrupt the electrical supply.
Which type of turbine is commonly used in hydroelectric power plants?
A Steam
B Francis
C Wind
D Gas
Francis turbines are commonly used in hydroelectric power plants. These turbines are designed to efficiently convert the energy from flowing water into mechanical energy, which is then used to generate electricity.
What is cogeneration in the context of power plants?
A Simultaneous heat and power
B Fuel storage
C Backup power
D Frequency adjustment
Cogeneration is the simultaneous production of electricity and useful heat from the same energy source. This process increases efficiency by utilizing waste heat for heating purposes, thereby reducing fuel consumption and environmental impact.
Which power plant system is used to generate electricity from ocean waves?
A Wind energy
B Tidal energy
C Wave energy
D Solar energy
Wave energy harnesses the movement of ocean waves to generate electricity. Special devices convert the mechanical energy of the waves into electrical power, making it a renewable and sustainable energy source.