The National Grid
Quiz
•
Physics
•
1st - 12th Grade
•
Practice Problem
•
Hard
J Dickson
Used 21+ times
FREE Resource
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of the National Grid?
The power generation apparatus.
The flow of current around a house.
A network of cables and transformers.
A big grid in the road.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When electricity is transported from power stations to our homes in what way do we change it for transport?
Increase the voltage.
Increase the current.
Increase power.
None of the above.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For what reason do we increase the voltage in the power lines?
To increase the amount of heat produced.
To maximise the intensity of power modulation frequency.
To reduce the amount of birds killed.
To reduce energy losses.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In what form is energy lost when the electricity is transported?
Eddy currents causing electrons to be lost to Earth.
Thermal energy to the wires and dissipated in the air.
Interference with radio signals.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a step up transformer?
Increases the voltage and the current.
Increases the voltage and decreases the current.
Increases the current and decrease the voltage.
Decreases both the current and the voltage.
Increases the voltage only.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a step Down transformer?
Increases the voltage and the current.
Increases the voltage and decreases the current.
Increases the current and decrease the voltage.
Decreases both the current and the voltage.
Increases the voltage only.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a laminated iron core?
An orb at the centre of the Earth.
A nuclear reactor that generates power.
An iron core coated with a thick layer of plastic to insulate it.
Medium through which a magnetic field is generated and generates a current.
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