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When you say difficulty 2, are you grading it based on actual exam difficulty or just based on how your own perspective? 

Oh crap I screw it up, was supposed to be about 1060 h2. Probably when I blinked it went up one line lol it should be same value 0.077kW using the chart.

Yes, its just I am bad at the chart, I used the chart in the MERM appendix using only ruler, did not point my pencil or write a line since its not allowed during test, that's what I got from using chart, my estimate was h1=1405 and h2=1105 that't definitely not within 2% from the value...

Hi, So this is what I got using Mollier 0.067kW time 3min 46 sec. Using tables I got 0.077kW time 2min 24 seconds. I think it made me faster on tables just because I already input the numbers, each step. OR maybe I am just slow in the chart.

Ok I will try when I got home and I will honestly time both approach.

So I don't confuse myself with this type of problem, I just always assume 100% efficiency and calculate h2 theoretical then get actual h2 from the given data you get the efficiency. I find it more time saver doing this than using a ruler and triangle. As well as its more accurate to solve than...

Oh yes same, did not notice the small v being specific volume. 

How did you come up with v2/a2 = 4v1/a1? I did come up with d2=[(34.48 d1^2 / 4(0.58)]^1/2 = 3.855in This is pretty similar to that NCEES problem, but here it is assumed that the vapor had the same velocity with the fluid at the downstream.

Hi there! Thanks for sharing! Is this your first time taking the exam? 

Oh yes, that's right. I was going straight to d=0.4175 ft. My bad. I just got the impression it did directly from 10in x 0.5 = 5. But upon checking on pipe schedule it was actually correct should be 5.01/12 to be accurate.

Also the area used was (5/12) which is wrong. Should be 0.4175/12. If this type of problem requires more accuracy, it could have gone wrong. Yes, its is indeed nice, got about 50 different problems from 2016 version. Bought it as soon as I saw one for sale on ebay.

The solution.

Hello everyone, So I have this problem #123 from ncees 2001. It did an assumption of the coefficient of flow.  And then showed a assumption check which I think was done wrong, but technically the values assumed in this particular problem won't matter since you get constant value of cf after...

Thanks for sharing!  Ok so, just for info purposes if you haven't bought the NCEES Practice test yet, the 2016 NCEES Practice Test is basically 90% the same from the 2008, they just split the TFS to the other Mech exam. (EDIT: There were approximately 5 new questions in the 2016 Practice Test)...

Thanks for sharing!  PPI is also known as the METS? I don't have the EngPro yet. Hmm if time allows, I would get that as well. Also another tip I got is to practice with mechanical pencil something like what we will be using on the actual test. I did't think its a huge factor though on my end...

Hello Fellow EIT's who will take the TFS exam this April 2018! Were almost there, 5 weeks to go. What have you done so far? I thought I should write this up so we can share our prep strategies! I hope we can help each other. Here's what I've done so far: 1. I started with the MERM on Jan.16...

Yes just probably more practice, I am going to take the TFS Exam this April as well.  I looked into the Slay The PE TFS Sample Problems(The Free TFS Sample Problems Posted On their website) and I could answer them right away after reading the question(most by just using my calculator since most...

Did you work on the "Examples" in the 13th Edition MERM OR just the MERM Companion Practice Problems?

Thank you very much for taking the time to respond appreciate it. As I am a dad with 7 and 8 yr old. It is the same for me, it is a one shot deal for me. I want to make it simple as possible, I have exactly 91 days to study from the test date and will probably just make 4-6 hours the most each...

Hi,  I agree, that is how I will prep for the exam, not just by practicing problems but rather understanding and knowing the theories and applications. So far, I am thinking of using these books below and bring it to the exam: 1. MERM 13th Edition 2. Practice Problems (MERM13th Ed...