One of my instructors is fond of saying 'the only stupid question is the one you don't ask'. Its not a good thing, particularly in class, to be intimidated into not asking questions.
There are other forums which might be more appropriate, though. PPRuNe has a 'questions' forum for the simple stuff and 'tech log' for the difficult and debatable. Most of the larger groundschools also have Q&A forums although the instructors there do sometimes get a bit shirty when asked to sort out misunderstandings primarily caused by bad tuition at other schools. Maybe the 'questions' forum would be a good place next time?