80%, well that's about what we needed for a pass with credit. I have just re read my earlier post, and it sounds a bit arrogant, so let me explain. I took my exam after the relevant period of college training, I sat in the class and listened and understood, and asked questions if I didn't, but the City and Guilds system we had then was different in that every trainee completed a year in industry and if your employer thought you were worth it (ie you had managed to keep your job) you started college in your second year of employment. If you failed the first year of college, you were generally out of the industry!, If you could convince your employer that there were valid reasons why you failed, you just might get to do the whole first year course again, and then pass, but on my course, most who failed left and turned up later asking if I wanted fries with my meal. As someone has already mentioned,most of what this exam contains could be passed by memory alone, very few if any of the questions are asked in a way that would require any understanding of the core concepts to answer. I also concur with the OP on the ridiculous use of jargon and TLA's (three letter acronyms, actually they are not acronyms, but that's another post)> You seem to come across more and more of this techno-babble, and it is usually inserted into conversations to make otherwise simple concepts seem complex and non-understandable to "outsiders" thus boosting the ego of the user. You get a lot of this in the computing field, and I have found that some instructors (mainly, it has to be said, Americans) who do not seem to know what some of them actually stand for! Also, they are a movable feast, PFC? prospective fault current or power factor correction? Result? Confusion in an industry where confusion is dangerous. Sufficient to say that I think their use in an exam is ludicrous, and again someone above has mentioned "getting the terminology exactly right" That is a simple memory trick, and if that is the criteria being used to select the senior electrical engineers of tomorrow, god help us all.