phantom loads Flashcards
1
Q
what is a phantom load?
A
electricity consumed by an electrical appliance when it is not being used
2
Q
about how much % of your electrical energy usage can a phantom load use?
A
7%
3
Q
how is efficiency calculated?
A
E (out) / E (in)
4
Q
how is E (out) calculated?
A
efficiency E x (in)
5
Q
how is E (in) calculated?
A
efficiency x E (out)
6
Q
what is percent efficiency?
A
the ratio of useful energy output to total energy input, expressed as a percentage
7
Q
what is E (in)?
A
electrical energy input
8
Q
what is E (out)?
A
desired energy output
