Effiency Flashcards
1
Q
What is the unit for efficiency?
A
Jules [J]
2
Q
What is the formula for efficiency?
A
Efficiency = useful energy transferred by device / total energy supplied to device
3
Q
What diagram can be used to show efficiency?
A
Sankey Diagrams
4
Q
What are the two main ways you can reduce the amount of energy wasted?
A
Lubrication and insulation
5
Q
Lubrication reduces energy transferred by _________?
A
Friction
6
Q
Insulation reduces the rate of energy transfer by ________?
A
Heating
