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WorksheetsGeneration of Energy(Transformer) Cikgu Sakinah
Total questions: 12
Worksheet time: 6mins
Electricity is generated at a .......
power station
petrol station
power source
source of energy
Generators normally produce...
Alternating current
Direct current
Step-up transformers...
increase the voltage
decrease the voltage
Transformer are used to raise the voltage along substations and lower it for residential consumption. What kind of transformer are used to raise the voltage?
step-up
step-down
neither of the two
both
Transformers on distribution poles .............. voltage for use in homes.
step down
step up
step right
step left
If the current is transmitted at high voltage...
less energy is lost
more energy is lost
it produces alternating current
underground cables are used
What form of energy is being converted to electrical energy with this bike?
light
motion
sound
heat
Renewable energy sources can best be defined as
resources that will regenerate in a million or more years
resources that will regenerate in a generation or less
resources that will regenerate in 10-20 million years
resources that do not have the ability to regenerate
What is the advantage of electricity transmission at high voltage?
Increase the energy
High current flow
Reduce the heat dissipated in the electrical cable
Reduce the resistance of transmission cable
Calculate the voltage for secondary circuit
12.5 V
25 V
50 V
100 V
Calculate the current that flows in secondary circuit
0.03 A
0.075 A
0.015 A
0.020 A
Which number of turns of primary and secondary of transformer is suitable in order to stepped up the voltage from 25 kV to 132 kV ?
primary: 1000 turns
secondary: 52,800 turns
primary : 55,000 turns
secondary : 1000 turns
primary: 2,500 turns
secondary: 13,200 turns
primary : 13,200 turns
secondary : 20,500 turns
