WorksheetsThe National Grid (H)
Total questions: 15
Worksheet time: 8mins
What quantities are changed in a step-up transformer?
Voltage increases
Voltage decreases
Current increases
Current decreases
Why is the voltage increased in the national grid?
Stops electricity being lost.
Stops energy loss by heat
To increase safety
Stops energy loss through leaking electricity
What type of transformer increases voltage?
Step-Up
Step-Down
Which of these is a symbol for a fuse?
Why is the voltage in the national grid stepped down for peoples houses?
To make sure electrical devices work.
To save national grid money.
To stop energy loss in the home.
Large voltages are unsafe.
Which of the parts shown are NOT part of the National Grid?
Power Station
Step Up Transformer
Transmission Cables
Step Down Transformer
Homes
Which part INCREASES the voltage of the power supply?
Power Station
Step Up Transformer
Transmission Cables
Step Down Transformer
Homes
Which part DECREASES the voltage of the power supply?
Power Station
Step Up Transformer
Transmission Cables
Step Down Transformer
Homes
Which part burns FOSSIL FUELS?
Power Station
Step Up Transformer
Transmission Cables
Step Down Transformer
Homes
Which part has the HIGHEST voltage?
Power Station
Step Up Transformer
Transmission Cables
Step Down Transformer
Homes
Which part has a voltage of 230V?
Power Station
Step Up Transformer
Transmission Cables
Step Down Transformer
Homes
