I was not examined individually, but as one of a slate of candidates, so the dynamics were a bit different for my examination.
Anyway, the first set of questions pertained to our lives and personal Christian experience -- our "testimony", how our relationship with God and the church currently looks, our relationships with our wives and children, etc etc etc. As obvious as it sounds, a man can have quite an acumen of biblical and theological knowledge and still have his home and life as a total shambles.
Second was Bible knowledge, and the first question was "have you read the Bible".
Most of this section of the exam consisted of each of us being asked to give overviews a particular book or section of books of the Bible, how portions of the OT relate to the NT, where we would take a someone in Scripture if they were dealing with such-and-such an issue, etc.
Third was theology, which was essentially Westminster Standards, Book of Church Order, and views on certain hot-button issues in the PCA and wider evangelicalism.
We were then asked to leave the room as a group and called back in individually to be asked to state and defend any exceptions or scruples we had to the denominational standards, and then asked if there were any particular areas of the biblical qualifications for office that we struggle with. After a nerve-wracking . . . five minutes . . . we were called back in collectively and informed that we were all found by the Presbytery to be qualified and competent for the office of Ruling Elder. Two months later we were all elected and two months after that, we were ordained and installed.