Mike,I just did the NCEES practice exam #1, and it had a power screw problem. I found the section in MERM and it had the identical drawing (must have copied it from the same source). I got the problem wrong, because the MERM did not define all the parameters (wth?) and although had the same image, the equation was incomplete and needed an modifier, which MERM gave later, but hard to pick up this as a look-up problem during simulated (or real) exam conditions. They should have a simple practice problem, but I bet they would have one with 3 simultaneous equations to solve with partial fractions!!!
I am extremely disappointed with the MERM practice problems (after doing the NCESS practice exam), they are way off base, requiring you to do a 30 minutes or more of calculations having nothing to do with the actual chapter you are working. IF I was doing it over, I would skip the MERM questions altogether, or maybe just do a few of the simple ones. The NCEES hammers away at fundamental knowledge and overall understanding, with very little calculation. If you have limited study time (which I do) the MERM question are a waste. Better to do both NCESS practice exams, maybe the one on-line, plus six minute solutions and lots of reading to understand the fundamentals. If you have extra time, then sure, do the MERM practice problems.
BPH