CP3b Energy Efficiency Flashcards
1
Q
Dissipated (definition)
A
Spread out
2
Q
Efficiency
A
The proportion of input energy that is transferred to a useful. A more efficient machine wastes less energy
3
Q
Efficiency (calculation)
A
Efficiency = useful energy transferred by the device/ toatl energy supplied to the device
4
Q
Explain how the efficiency of a bicycle can be increased
A
To increase the efficiency, the bike chain can be oiled. This lubricant can reduce friction that cause them chain to emit thermal energy
