Which statement is true about a solar panel?

Lower the light level the lower the voltage produced

If the new Drax biomass plant is 40% efficient, this would be because ...

Chem energy in wood chips in = 2000kJ, heat out = 800kJ

In a power station, the correct sequence of events would be ....

Burn fuel > Boil water > Steam > Turbine > Generator

The National grid is designed to ...

make all the generated power available to everyone

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AQA Physics: Domestic Mains Electricity & The National Grid and

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Domestic Mains Electricity and National Grid

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Questions 15

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1
Birds do not die (of electric shock) when they land on high voltage pylon wires because
they are not stupid
they are hovering
they are not live
they are not earthed
2
The RCD (Circuit breakers) in your home will NOT work properly if...
nothing turned on at the time.
you foolishly mess with the mains.
you have no earth connection.
you have no rainbow connection
3
Which statement is true about a solar panel?
Lower the light level the lower the voltage produced
The brighter the sunlight, the lower the voltage produced
The hotter the weather the higher the voltage produced
The higher the voltage the more sunshine you get
4
Which one of the following combinations are both correct about AC mains supply in our homes?
230V, 60 Hz
230 V, 50 Hz
120V, 50 Hz
120 V, 60Hz
5
A UK Mains plug, when viewed from the back, is wired with 3 core flex as follows:
A: N/Blue, B: No connection, C: L/Brown
A: L/Blue, B: E/YG, C: N/Brown
A: N/Blue, B: E/YG, C: L/Brown
A: L/Blue, B: E, Brown, C: N/YG
6
If the new Drax biomass plant is 40% efficient, this would be because ...
Chem energy in wood chips in = 2000kJ, heat out = 800kJ
Chem energy in wood chips in = 400 kJ, heat out = 1000kJ
Chem energy in wood chips in = 1000kW, heat out = 300kJ
Chem energy in wood chips in = 1000kJ, heat out = 500kJ
7
In a power station, the correct sequence of events would be ....
Burn fuel > Boil water > Steam > Turbine > Generator
Burn fuel > Boil water > Steam >Generator > Turbine
Boil water > Burn Fuel > Steam > Turbine > Generator
Burn fuel > Boil water > Turbine > Steam > Generator
8
If P=IV, Watt ^What is the power used by a bulb using 0.5A and 200V?
1000 W
1 W
100 W
10 W
9
A thermal power station uses
fossil fuels
filtrum banks
biogas
alternative energy resources
10
The National grid is designed to ...
make some of the gerated power available to everyone
make none of generated power available to no one
make all of the gerated power available to someone
make all the generated power available to everyone
11
All alternative energies are derived directly or indirectly from the
stars
sun
environmental policies
fossil fuels
12
Shadwell used a 2kW kettle for 2h at 10p per kWh. It cost him (in pence)
100p
400p
10p
40p
13
A transformer can
change AC voltages
change DC voltages
chage DC currents
disguise itself as a robot.
14
A device with a wire that melts and breaks if too much current flows through it is called ?
RCD
Fuse
Snape
Plug
15
Dave's hair straighteners draw 4.5A. The best commercially available fuse to go in her plug is
3 A
0.1 A
13 A
5 A

AQA Physics: Domestic Mains Electricity & The National Grid and Flashcards | StudBud