National Grid & Transformers
Authored by Afiya R
Science
11th Grade
Used 26+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the voltage increased in step up transformers in the national grid?
To reduce the energy lost due to heating
To increase the power
To increase the current
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the voltage decreased in step down transformers in the national grid?
To reduce the energy lost due to heating
It is safer for consumers
Less energy is used by consumers
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the approximate value of the potential difference of the UK mains electricity supply?
23
230
300
50
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a step up transformer do?
increase potential difference
increase current
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a step down transformer do?
decrease potential difference
decrease current
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The National Grid distributes _____ across the country.
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