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Description
Flashcards by Adam Collinge, updated more than 1 year ago
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Created by Adam Collinge
over 10 years ago
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| Question | Answer |
| How is electricity distributed across the UK? | Via the National Grid |
| How does the national grid work? | Electrical energy is taken from power stations to where it's needed in homes and industry. In order to keep energy efficiency high, the voltage is boosted to a huge amount, whilst the current is very low |
| What two things are needed, so the National grid can keep voltage high, with current low? | Transformer and Pylons |
| What are the two transformers used for? | One is used so it can step up the voltage to a huge amount, whilst the step down transformer is used to bring it down to a safe level |
| What are the two ways electricity can be transported? | Either through underground cables, or over head pylons |
| Give three pros of using over head cables, rather than underground cables | 1) Lower set up cost 2) Easy to access and fix 3) Easy to set up |
| Give three pros for using underground cables, opposed to overhead pylons | 1) Minimal maintenance is required 2) It is hidden from the public 3) It's not affected by weather |
| In the future, how will supply be increased? | By opening more power plants or increasing their power output |
| How can electricity demand be reduced? | By having consumers purchase more electrically efficient products |
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