QUOTE(fsharpminor @ Aug 15 2006, 10:00 AM)

My tip is to think of the triad as two separate intervals.
If both intervals are thirds, its root position.
Obviously for root position, if the lower interval is major, it has to major or augmented, and if its minor it has to be minor or diminished. Then you consider the upper interval. If Its a minor over a major, then the chord is major, if its two major intervals, its augmented.
If its two minor intervals ,its diminished, if its a major over a minor interval, then its a minor chord.
If one interval is a fourth, not a third, then its not root position.
If the fourths at the top, its first inversion, if its at the bottom its second inversion.
So then we use a similar argument as for the root positions above.
If a first inversion:-
Minor third under perfect fourth is major 1st inversion
Major third under perfect fourth is minor 1st inversion
Minor third under an aug. fourth is diminished 1st inv.
Major third under dim fourth is aug first inversion.
I'll leave it to you to work out the second inversions in terms of intervals! Hope this helps.
The problem with this system is that you need to have a sufficiently attuned ear to make out the two intervals. I struggled with Grade 8 Aural (I eventually bought the ABRSM Training manual and accompanying CD) and I couldn't identify the intervals. I'd suggest, in fact, that if your ear is sufficiently acute to hear the two intervals, you should be able to train it easily to hear the chord as a whole.
As someone else remarked elsethread, a lot of the tricks in this part of the exam depend on voice leading - especially the bass.
Edward