Transmission and Distribution of electricity
Assessment
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Wei Ming Kang
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Science
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3rd Grade
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187 plays
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Medium
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10 questions
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1.
Multiple Choice
Why is alternating current used instead of direct current in the transmission of electricity through long distances?
Only alternating current can flow through the cables.
Alternating current voltage can be stepped up or stepped down by using transformers.
Most of the electrical appliances work only with alternating current.
Generating direct current is more complicated than generating alternating current.
2.
Multiple Choice
The function of the transformer in the transmission of electricity is to
increase the resistance.
change the voltage.
reduce the time to transmit the electricity.
increase the power.
3.
Multiple Choice
Electricity is generated at a .......
power station
petrol station
power source
source of energy
4.
Multiple Choice
Transformers .............. voltage for use in homes.
step down
step up
5.
Multiple Choice
Electricity is sent over ............... transmission lines.
low voltage
no voltage
high voltage
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