How can I tell if the source is AC or DC

[Jason03]

A 24 V battery is connected to the primary input of a transformer having a turns ratio of 8. The voltage seen at the secondary output is:


Now how can I tell if the source is AC or DC from this question?

 

[Redbelly98]

Good question. If the battery is made from electrochemical cells, it's DC. And I've never heard of an AC source referred to as a "battery". If they meant AC, it is a really weird way to word the question.

 

[Jason03]

It was a bit of a trick question from my teacher...luckily I got it right...the answer is zero volts since a battery would be considered a DC source...therefore no output voltage