Understanding Electricity Transmission

TechnoMum's TechLine answers a question about how electricity reaches homes. Electricity is generated at power stations using various energy sources. It travels through the national grid, where transformers boost its voltage for long-distance travel. Once near homes, the voltage is reduced for safe delivery through underground cables.

What is the main topic discussed in TechnoMum's TechLine?

• How to cook using electricity

• How electricity enters homes

• The history of electricity

• Different types of electrical appliances

Where is electricity initially generated before it reaches homes?

• At electrical outlets

• In local neighborhoods

• At power stations

• In household generators

What is the purpose of the national grid in electricity transmission?

• To convert electricity into other forms of energy

• To generate electricity from renewable sources

• To deliver electricity to where it's needed

• To store electricity for future use

Which of the following is NOT a source of energy used at power stations?

• Wind

• Biomass

• Solar

• Coal

What is the function of transformers in the electricity transmission process?

• To convert electricity into heat

• To store electricity

• To boost and step down voltage

• To generate electricity

Why is it necessary to step down the voltage of electricity before it enters homes?

• To increase the speed of electricity

• To improve the quality of electricity

• To make it safe for household use

• To reduce electricity costs

What is the role of pylons in the national grid?

• To store excess electricity

• To support cables that transmit electricity

• To convert electricity into other forms

• To generate electricity

What ensures that electricity can travel long distances efficiently?

• Direct current transmission

• Alternating current transmission

• Low voltage transmission

• High voltage transmission