312 - Electrical supplies to the property
Authored by Brendan Cocks
Construction
12th Grade
Used 6+ times
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47 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of a transformer in the electrical generation process?
To decrease the voltage
To increase the voltage
To convert AC to DC
To store electrical energy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
what voltage does a transformer increase the electromotive force?
10,000 volts to 100,000 volts
22,000 volts to 400,000 volts
50,000 volts to 500,000 volts
30,000 volts to 300,000 volts
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does electricity need to be transmitted at very high voltages?
To reduce power loss through power lines
To increase the speed of transmission
To decrease the cost of electricity
To improve the quality of electricity
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the typical voltages of a supergrid ?
400kV and 275kV
132kV and 33kV
11kV and 400V
230V and 400V
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of sub-stations in the National Grid?
They generate electricity.
They transform the electrical supply down to 11kV.
They increase the electrical supply to 400kV.
They store electricity for later use.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what voltage is electricity finally distributed to customers?
11kV
132kV
400V
230kV
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is electricity distributed to customers after being transformed to 400V?
Through overhead power lines.
Via an underground supply.
By wireless transmission.
Through solar panels.
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