12 Questions
What is the purpose of the fuse connected between the live wire and the electricity meter?
To protect against overloading
Why is the neutral wire connected directly to the electricity meter?
To complete the circuit
What does the difference between the beginning and end meter readings represent?
The cost of electricity consumed
Why is the earth wire connected to the body of the electricity meter?
To protect against electrical shock
Which component is responsible for protecting the circuit from short circuits and overloads?
Main fuse
How does the cost of electrical energy consumed relate to the time for which electrical appliances are used?
It increases with usage time
What do the colours of red, black, and green represent in the old convention of colour coding for wires?
Red represents live, black represents neutral, and green represents earth
What is the purpose of the disc rotation in the electric meter?
To count the number of revolutions as a measure of power consumed
What is the significance of brown, light blue, and green/yellow in the new internationally accepted convention of colour coding for wires?
Brown represents neutral, light blue represents live, and green/yellow represents earth
What is used to distinguish between live, neutral, and earth wires in electrical appliances?
A three core flexible cable with specific color insulations
How is the amount of electrical energy consumed in a house measured?
By the speed of rotation of the disc in the electric meter
What is counted by a special counter in the electric meter?
The total number of revolutions of the disc
Test your knowledge on electrical wiring and colour coding for live, neutral, and earth wires in electrical appliances. Learn about the specific colors used to identify each wire and how they are connected to the main switch. Explore the consumption of electrical energy in households.
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