I took power as well. I felt the test was hard. As some of my colleagues said right afterwards "That was a TEST." Like everyone said, there were more conceptual questions than I expected. I wanted to get a bunch of easy econ questions, but no...I'm very glad I borrowed a Schaum's machines book for the test! Also, I had to learn more about relays DURING the test to solve some of those problems. I mean, good thing I had some reference material on it, but sheesh man, I wish I'd fully learned that stuff properly before going into that exam! Also, I would've benefitted from bringing more practical reference material (equipment catalogs, cutsheets, etc). I felt like I prepared the most I could have, yet I'm really on the fence about it. We. Shall. See...