Minimising Power Transmission Losses (VCE SSCE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What formula calculates power loss in transmission lines?
What formula calculates power loss in transmission lines?
If transmission voltage increases by 10x, power loss decreases by what factor?
If transmission voltage increases by 10x, power loss decreases by what factor?
100
What is the typical extra high voltage used for transmission in Australia?
What is the typical extra high voltage used for transmission in Australia?
500 kV
Why does high voltage transmission reduce power losses?
Why does high voltage transmission reduce power losses?
Lower current reduces losses
Which factor in is most practical to change to reduce wire resistance?
Which factor in is most practical to change to reduce wire resistance?
Cross-sectional area
Why is aluminium used for transmission lines instead of copper?
Why is aluminium used for transmission lines instead of copper?
Cheaper and lighter
What limits transmission voltages to around 500 kV in Australia?
What limits transmission voltages to around 500 kV in Australia?
Corona effect causes air breakdown
For transformers, what is the relationship between turns ratio and voltage ratio?
For transformers, what is the relationship between turns ratio and voltage ratio?
What type of transformer is used as power leaves the power station?
What type of transformer is used as power leaves the power station?
Step-up transformer
What percentage of generated power is lost in Australia's transmission system?
What percentage of generated power is lost in Australia's transmission system?
About 10%