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Worksheets6.3 Transmission and distribution of electricity
Total questions: 10
Worksheet time: 5mins
Find the part in an electrical wiring system with its correct function.
Carries electricity from the local substation to the house
Main fuse
Live wire
Neutral wire
Earth wire
State the part in an electrical energy transmission and distribution system with its correct function:
Distributes electrical energy throughout the country through cable network.
Power station
Switch zone
National Grid Network
Main substation
State the safety components in the wiring system in homes.
Earth Leakage Circuit Breaker
Neutral wire
Earth wire
Replaceable wire fuse
Name this type of fuse:
(a) fuse
State the true statement regarding the advantages of having the National Grid Network.
Consumers still receive electrical energy from other power stations if one of the power stations is shut down
Increase the number of power stations required
Reduce the number of substation that has to be built
The amount of electrical energy sent to customers is based on their actual demand to reduce wastage
State the correct statements about the single-phase wiring system
supply 240V electrical energy
supply electrical energy at 415V or more
Installed in low and middle-cost housing areas.
Installed in an industrial and commercial area.
What is the type of transformer that is used before electrical energy flows through the cables?
(a)
Name the component labeled D
Power station
National Grid Network
Switch zone
Step-down transformer
Fuse is a fine wire with _________resistance and has a _______ melting point.
low, high
high, low
large, small
small, large
A 2-pin plug consists of the neutral wire and Earth wire.
TRUE
FALSE
