Question

name one source each of DC and AC .

Answer 1

Electric power provided by electricity board in our country is AC power of single/three phase.  

Therefore our concern is using it as converting it into DC power for any appliances.  

DC power is required without help of Electricity board we can use battery supplies of 12/24 volts or multiples as per our requirement.  

This DC power can be converted to AC power using inverters.

Answer 2

DC - cell

AC - mains

I hope this may help you