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WorksheetsP2 b Plug Mains
Total questions: 26
Worksheet time: 26mins
If the earth wire is damaged...
The user will suffer from electric shock
The appliance won't work
The appliance will overheat
What colour is the live wire in a three pin plug?
brown
Blue
Green and yellow
What colour is the neutral wire in a three pin plug
brown
Blue
Green and yellow
What colour is the earth wire in a three pin plug
brown
Blue
Green and yellow
Which label points protect the wires and electrical appliances form any excessive current flow?
C
D
E
F
Which label points carries current into electrical appliance ?
A
B
C
D
Which label points allow leaked electrical current to flow in earth?
A
B
C
D
Which label points to the Neutral Wire on the diagram?
A
B
C
D
What colour is the live wire in a three pin plug?
(a)
What colour is the neutral wire in a three pin plug
(a)
Green and yellow is colour for (a) wire
When the current through a fuse gets too high, the wire inside the fuse will...
spark
melt
switch OFF
The ________________ covering each wire is colour coded for easy identification.
0 V
insulation
large electric current
neutral wire
The ___________ wire is a safety wire to stop the appliance becoming live.
earth
live
neutral
safe
A _______is a device, which is used to protect circuits from over current, overload and make sure the protection of the circuit. It is made of porcelain, glass or porcelain.
fuse
circuit breaker
relay
contactor
When overload occurs, the fuse element starts to melt immediately and break the connected circuit from the incoming supply. Thus, it protects the whole circuit.
T/F
false
true
Electric current is measured in
kWh
Amps
Ohms
Watts
Electric power is measured in
kWh
Amps
Ohms
Watts
This is the circuit symbol of a
resistor
battery
fuse
switch
an earth wire
If a bulb uses 10A, which fuse would be best?
10A
13A
8A
5A
Where is the Earth wire connected to?
The Live wire
The casing
The neutral wire
The fuse
Why are overheating cables a hazard?
Could cause a fire
Could cause a electrocution
Could cause a shortcircuit
Could melt the fuse
1- The fuses protected electrical circuits from ...... ?
The water.
The Over load current.
The Electric shock
The Overload and short circuit current.
