Yes, but it's old-fashioned, somewhat like saying "himself" to mean "you." When I was in Transylvania, my Hungarian guide said that "Ön" was preferable to "maga." Both use the 3rd-person singular of the verb.
In English, there is no difference of any kind if you ask ''Are you English?''. However, in Hungarian there is. I see this mistake often being repeated here.
The question in English applies to all Hungarian, as it can be interpreted as such.