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- 1. Multiple Choice
What type of transformer increases voltage?
Step-Up
Step-Down
- 2. Multiple Choice
What quantities are changed in a step-up transformer?
Voltage increases
Voltage decreases
Current increases
Current decreases
- 3. Multiple Choice
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
- 4. Multiple Choice
What is mains voltage in the UK?
240V
1.5V
120V
230V
- 5. Multiple Choice
Which images shows the voltage trace for a.c?
- 6. Multiple ChoiceElectrical energy enters the home at approximately...25,000 V132 kV230 V
- 7. Multiple ChoiceStep-up transformers...improve the efficiency of the national gridreduce the voltage to a safe level for the homeboth
- 8. Multiple ChoiceStep-down transformers...improve the efficiency of the national gridreduce the voltage to a safe level for the homeboth
- 9. Multiple ChoiceIn a fuel power station, the turbine converts the heat from the steam into...heat energykinetic energyelectrical energy
- 10. Multiple ChoiceIn a fuel power station, the generator converts kinetic energy from the turbine into...heat energykinetic energyelectrical energy
- 11. Multiple ChoiceStep-up transformers...reduce the currentincrease the currentincrease the power
- 12. Multiple ChoiceThe type of current where charges flow in one directionDirect CurrentAlternating CurrentElectron FlowVoltage
- 13. Multiple ChoiceThe device that lowers our AC voltage so we can use it in our homesTransformerRectifierSplicerVoltmeter
- 14. Multiple ChoiceAC stands for ___.Alternating CurrentAttraction Connections
- Answer choicesTagsAnswer choicesTags