I passed the electrical power PE exam this past April (first time) and what I found was that some of the problems on the exam will take you 20 minutes and others will take 30 seconds. The key for me was to read through all the problems on the exam before trying to work any of them. Then go back through and solve the easy ones. Next go back and solve the ones you know how to do but require you to look up some data. Last, solve the hardest problems. I did this and I finished 30 minutes early in the morning and nearly an hour early in the afternoon. This allowd me time to go back over the harder problems and make sure I did not make any mistakes. Also, what I noticed was that as I read over the exam problems before starting any, it helped to calme me down because as I read them I realized the vast majority I knew exactly how to solve. I'm sure if you put in the time to study, the same will be the case for you. Good luck.