efficiency Flashcards
1
Q
equation
A
useful/total
2
Q
list some ways to increase the
efficiency of an object
A
- lubricating
- more streamlined
- insulation
3
Q
if a device is more efficient…
A
less energy is wasted
4
Q
which devices are 100% efficient and why?
A
electric heaters - all the energy is transferred to useful thermal energy stores
5
Q
why is a high efficiency important?
A
less energy wasted so better value for money
