180 Questions
What is the primary method of generating electricity in South Africa?
Converting different forms of energy into electrical energy
What is the purpose of a turbine in a power station?
To convert mechanical energy into electrical energy
What is the result of burning coal in a furnace?
Production of steam
What is the definition of alternative energy?
Sources of energy that are not derived from fossil fuels
What is the final step in a coal-powered power station?
Transmission
What is a generator?
A device that converts mechanical energy into electrical energy
What is the environmental disadvantage of relying on coal for electricity generation?
All of the above
What is the purpose of pulverization in a coal-powered power station?
To crush large chunks of coal into a fine powder
What type of energy source is coal?
Non-renewable
What is a power station?
A facility for the generation of electrical power
What is the process of generating electricity in a hydroelectric power plant?
Water flows through turbines, turning them to generate electricity
What is a major advantage of wind power?
Low emissions during operation
What is the process of generating electricity in solar power plants?
Converting sunlight into electricity through photovoltaic cells
What is an example of a portable generator?
Hand-crank generator
What is the primary method of generating electricity in a nuclear power station?
Nuclear fission
What is the process of splitting a heavy atomic nucleus into two smaller nuclei?
Nuclear fission
What is the term for emitting radiation as a result of the decay of atomic nuclei?
Radioactive
What is the name of the nuclear power station located in Cape Town, South Africa?
Koeberg Power Station
What is the process of combining two light atomic nuclei to form a heavier nucleus?
Nuclear fusion
What is the term for the energy produced from controlled nuclear reactions?
Nuclear Power
What is the primary fuel used in nuclear power stations?
Uranium
What is the purpose of control rods in a nuclear reactor?
To absorb excess neutrons
What is the advantage of nuclear power generation in terms of greenhouse gas emissions?
It produces minimal greenhouse gas emissions
What is the purpose of the cooling system in a nuclear reactor?
To ensure safe operating temperatures
What is a major disadvantage of nuclear power generation?
Radioactive waste production
What is the purpose of a transformer in the national electricity grid?
To change the voltage of an electric current
What is the function of pylons in the national electricity grid?
To support overhead power lines
What is the purpose of transmission lines in the national electricity grid?
To transport electricity over long distances
What is a power surge in the national electricity grid?
A sudden increase in voltage
What is the significance of the Fukushima-Daiichi disaster?
It underscores the potential risks associated with nuclear power
What is the primary purpose of transformers in the grid?
To manage voltage levels throughout the grid
Why is high-voltage electricity essential for transmission?
To reduce energy loss due to resistance in transmission lines
What happens to the voltage during transmission through step-up transformers?
It increases
What is the result of a power surge?
Damage to sensitive electronic devices and circuits
What is the purpose of surge protectors?
To safeguard appliances by absorbing excess voltage
How do step-down transformers affect voltage levels?
Decrease voltage levels
What is the function of grid monitoring?
To monitor voltage levels and cut off the power supply during a surge
What is the effect of resistance in transmission lines?
Increase in energy loss
What occurs to the steam in a coal-powered power station?
It turns a turbine
What happens to the electricity after step-up transformation?
It is transmitted through power lines
What is the purpose of a generator in a power station?
To convert mechanical energy into electrical energy
What is a significant environmental disadvantage of relying on coal for electricity generation?
All of the above
What is the purpose of pulverization in a coal-powered power station?
To crush large chunks of coal into a fine powder
What is the primary energy source used for electricity generation in South Africa?
Coal energy
What occurs when the turbine spins in a coal-powered power station?
The generator turns, producing electricity
What is the term for energy sources that are not derived from fossil fuels?
Alternative energy
What is the purpose of the turbine in a coal-powered power station?
To convert steam energy into mechanical energy
What happens to the steam after pushing the turbine blades?
It is converted back into water
What is the result of combusting coal in a furnace?
It releases heat
What is the purpose of step 6 in a coal-powered power station?
To transmit electricity to homes and businesses
What is the primary function of turbines in a hydroelectric power plant?
To generate electricity from the potential energy of stored water
Which type of energy source is characterized by the process of controlled nuclear reactions?
Nuclear power
What is the primary advantage of renewable energy sources such as solar and wind power?
Renewability and lower environmental impact
What is the term for the process of splitting a heavy atomic nucleus into two smaller nuclei?
Nuclear fission
What is the primary advantage of nuclear power generation in terms of greenhouse gas emissions?
Low emissions during operation
What is the primary function of control rods in a nuclear reactor?
To control the rate of nuclear fission
What is the term for the energy produced from the heat of the Earth's interior?
Geothermal energy
What is the primary purpose of portable generators?
To generate electricity during power outages
What is the process of converting organic material into electricity through combustion or anaerobic digestion?
Biomass energy
What is the term for emitting radiation as a result of the decay of atomic nuclei?
Radioactive
What is the primary purpose of step-up transformers in the grid?
To increase voltage for efficient transmission
What is the effect of resistance in transmission lines?
Increased energy loss
What is the purpose of grid monitoring in the grid?
To monitor voltage levels and prevent damage during power surges
What is the result of a power surge in the grid?
Damage to sensitive electronic devices and circuits
What is the function of step-down transformers in the grid?
To decrease voltage for safe residential usage
What is the purpose of pylons in the grid?
To support transmission lines, ensuring they remain elevated and secure
What is the primary purpose of transformers in the grid?
To manage voltage levels throughout the grid
What is the cause of power surges?
Lightning strikes, faulty wiring, and the switching on or off of high-energy appliances
What is the function of surge protectors?
To absorb excess voltage and safeguard appliances
Why is high-voltage electricity essential for transmission?
To reduce energy loss due to resistance in transmission lines
What is the purpose of a nuclear reactor vessel?
To contain uranium fuel rods where fission reactions occur
What is the benefit of nuclear power generation in terms of energy density?
A small amount of fuel can produce a large amount of energy
What is the purpose of the radiation containment structure in a nuclear reactor?
To prevent radiation leakage and protect workers and the environment
What is the primary purpose of transformers in the national electricity grid?
To change the voltage of an electric current
What is the significance of the Fukushima-Daiichi disaster?
It underscored the importance of stringent safety measures in nuclear power plants
What is the purpose of transmission lines in the national electricity grid?
To transport electricity over long distances
What is the result of a power surge in the national electricity grid?
A sudden increase in voltage within an electrical circuit
What is the primary disadvantage of nuclear power generation?
It produces radioactive waste that requires secure storage
What is the purpose of the cooling system in a nuclear reactor?
To ensure the reactor and other components remain at safe operating temperatures
What is the purpose of pylons in the national electricity grid?
To support overhead power lines
What is the primary advantage of using coal for electricity generation?
It is a abundant energy source
What is the purpose of steam generation in a coal-powered power station?
To power the turbine
What is the main environmental disadvantage of relying on coal for electricity generation?
All of the above
What type of machine is used to produce continuous power in a power station?
Turbine
What is the purpose of combustion in a coal-powered power station?
To heat the furnace
What is the purpose of transmission in a coal-powered power station?
To send the generated electricity to homes and businesses
What is the result of turbine operation in a coal-powered power station?
Generation of electricity
What is the type of energy converted by a generator in a power station?
Mechanical energy into electrical energy
What is the purpose of a power station?
To generate electricity
What is the result of pulverization in a coal-powered power station?
Large chunks of coal are crushed into a fine powder
What is the primary reason for increasing the voltage in transmission lines?
To reduce energy loss due to resistance
What would happen to the electrical grid if step-down transformers failed to function?
Voltage would increase in residential areas, causing damage to appliances
Why are power surges a concern in the electrical grid?
They can cause damage to sensitive electronic devices and circuits
What is the primary advantage of hydroelectric power plants over other alternative energy sources?
Higher capacity factor
What is the purpose of grid monitoring in the electrical grid?
To monitor voltage levels and prevent damage during power surges
What is the primary purpose of control rods in a nuclear reactor?
To slow down nuclear reactions
What is the result of reducing energy loss due to resistance in transmission lines?
Increased energy efficiency in transmission lines
What is the primary purpose of the reactor vessel in a nuclear power plant?
To contain the uranium fuel rods where fission reactions occur
What is the primary function of transformers in the electrical grid?
To increase or decrease voltage levels as needed
What is the primary disadvantage of wind power as an alternative energy source?
Variable wind speeds
Which of the following is NOT an advantage of nuclear power generation?
Production of significant greenhouse gas emissions
What would happen if step-up transformers failed to function in a power station?
Voltage would decrease in transmission lines, causing energy loss
What is the primary purpose of a Faraday disk?
To convert mechanical energy to electrical energy
What is the primary function of transformers in the national electricity grid?
To change the voltage of an electric current
What is the primary advantage of nuclear power generation over fossil fuels in terms of greenhouse gas emissions?
Near-zero greenhouse gas emissions
What is the purpose of pylons in the electrical grid?
To support transmission lines, ensuring they remain elevated and secure
What is a significant environmental disadvantage of relying on coal for electricity generation?
Release of significant greenhouse gas emissions
What is the result of using high-voltage electricity in transmission lines?
Reduced energy loss due to resistance
What is the term for the energy produced from controlled nuclear reactions?
Nuclear energy
What is the primary purpose of transformers in the national electricity grid?
To increase the voltage of electrical current
What is the primary advantage of geothermal energy as an alternative energy source?
Reliability and consistency
What is the primary purpose of pylons in the national electricity grid?
To support overhead power lines that transport electricity
What is the purpose of surge protectors in the electrical grid?
To safeguard appliances by absorbing excess voltage
What is a major risk associated with nuclear power generation?
Accidents or radiation leaks
What is the primary purpose of a cooling system in a nuclear reactor?
To remove excess heat
What is the primary purpose of step-up transformers in the national electricity grid?
To increase the voltage of electrical current
What is the term for a sudden increase in voltage within an electrical circuit?
Power surge
What is the primary purpose of the cooling system in a nuclear reactor?
To ensure the reactor and other components remain at safe operating temperatures
What is the primary purpose of biomass energy as an alternative energy source?
To generate electricity from waste materials
What is a significant benefit of the national electricity grid?
Reliable and efficient transmission of electricity over long distances
What is the primary function of a turbine in a coal-powered power station?
To convert mechanical energy into electrical energy
What is the environmental disadvantage of relying on coal for electricity generation?
It contributes to habitat destruction and health issues
What is the purpose of step 3 in a coal-powered power station?
To boil water and generate steam
What is the term for energy sources that are not derived from fossil fuels?
Alternative energy
What is the purpose of step 1 in a coal-powered power station?
To crush large chunks of coal into a fine powder
What is the primary purpose of a steam generator in a nuclear power station?
To convert the heat from fission into steam
What is the significance of the Fukushima-Daiichi disaster in the context of nuclear power generation?
It underscores the need for stringent safety measures in nuclear power plants
What is the primary advantage of nuclear power generation in terms of energy density?
It has a high energy density, allowing for efficient energy production
What is the primary function of transformers in the national electricity grid?
To change the voltage of an electric current
What is the primary purpose of radiation containment in a nuclear power station?
To prevent radiation leakage and protect the environment
What is the primary advantage of hydroelectric power compared to other alternative energy sources?
Abundant resource availability
What is the primary mechanism by which nuclear fission generates energy?
The release of neutrons that split atoms
What is the primary advantage of wind power compared to other alternative energy sources?
No emissions during operation
What is the primary purpose of a portable generator?
To provide backup power during outages
What is the primary disadvantage of solar power?
Intermittent energy supply
What is the primary reason for using high-voltage electricity in transmission lines?
To increase the efficiency of transmission by reducing energy loss due to resistance
What is the primary function of step-up transformers in the grid?
To increase voltage levels before transmission
What is the effect of power surges on sensitive electronic devices and circuits?
They cause damage to the devices
What is the purpose of grid monitoring in the national electricity grid?
To detect power surges and cut off the power supply to prevent damage
What is the primary purpose of step-down transformers in the grid?
To decrease voltage levels before distribution
What is the primary advantage of hydroelectric power?
Renewable, less pollution, and sustainable
Which type of energy is generated from the heat of the Earth's interior?
Geothermal energy
What is the process of combining two light atomic nuclei to form a heavier nucleus?
Nuclear fusion
What is the primary advantage of using alternative energy sources?
Reduced reliance on fossil fuels
What is the term for emitting radiation as a result of the decay of atomic nuclei?
Radioactive
What is the main advantage of using nuclear power as a source of electricity?
High energy density
What is the purpose of the cooling system in a nuclear reactor?
To ensure the reactor and other components remain at safe operating temperatures
What is the significance of the Fukushima-Daiichi disaster?
It highlighted the importance of stringent safety measures and the potential risks associated with nuclear power
What is the purpose of transformers in the national electricity grid?
To change the voltage of an electric current
What is the term for the network of interacting components that work together to provide electricity across a country?
National Electricity Grid
What is the main function of a turbine in a coal-powered power station?
To spin the generator, producing electricity
What is a significant environmental disadvantage of relying on coal for electricity generation?
It leads to habitat destruction and health issues due to air pollution
What happens to the steam after pushing the turbine blades in a coal-powered power station?
It is released into the atmosphere as waste
What is the purpose of step 3 in a coal-powered power station?
To boil water to generate steam
What type of energy source is coal?
Non-renewable energy source
What is the primary purpose of transformers in the grid?
To manage voltage levels throughout the grid
What is the main reason for using high-voltage electricity in transmission lines?
To reduce energy loss due to resistance in transmission lines
What is the effect of step-up transformers on electricity?
Increase voltage and decrease current
What is the purpose of surge protectors in the grid?
To absorb excess voltage during power surges
What happens to the voltage during transmission through step-down transformers?
Decreases
What is the primary advantage of hydroelectric power?
Renewable and sustainable
What is the process of combining two light atomic nuclei to form a heavier nucleus?
Nuclear Fusion
What is the term for energy produced from controlled nuclear reactions?
Nuclear Power
What is the primary advantage of wind power?
Low operational costs
What is the purpose of a portable generator?
To provide power during power outages
Why are high-voltage electricity transmissions essential?
To reduce energy loss due to resistance in transmission lines
What do step-up transformers do to the voltage?
Increase it for efficient transmission
What is the function of step-down transformers in the grid?
To decrease voltage for safe distribution and usage
What can cause power surges in the grid?
Lightning strikes, faulty wiring, and the switching on or off of high-energy appliances
What is the purpose of grid monitoring in the grid?
To monitor voltage levels and cut off power supply during surges
What is the main function of the control rods in a nuclear reactor?
To regulate the fission process by absorbing excess neutrons
What is the primary advantage of nuclear power generation in terms of the environment?
Low greenhouse gas emissions
What is the purpose of the cooling system in a nuclear reactor?
To ensure the reactor and other components remain at safe operating temperatures
What is a major disadvantage of nuclear power generation?
Radioactive waste production
What is the primary function of transformers in the national electricity grid?
To change the voltage of an electric current
What is the main purpose of a turbine in a coal-powered power station?
To convert mechanical energy into electrical energy
Why is coal considered a non-renewable energy source?
Because it is formed over millions of years from prehistoric vegetation
What is the purpose of steam generation in a coal-powered power station?
To push the turbine blades
What is a major environmental disadvantage of relying on coal for electricity generation?
Habitat destruction and health issues due to air pollution
What is the purpose of combustion in a coal-powered power station?
To burn coal and produce heat
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