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If this example require to use Maximum Normal stress theory, should the compressive normal stress be directly used into eq50.4? or should the principal stress be calculated and used into eq50.4? Thanks.

NCEES 2008 AM #138 use 970btu/lbm. However, I found at 14.7psia, the water Hfg=1060 btu/lbm. They have different btu/lbm, did I miss anything? Thanks.

If a room was kept at condition1(enthalpy is H1), and the outdoor air condition was given(enthalpy is H2), to calculate the coil load of outdoor air ventilation (CFM was given), should we use the equation of: Q=4.5*CFM*(H1-H2). Thanks.

I will take T&F afternoon. When calculate fluid loss through a valve, will the equiv.length (ft) be listed in the exam (AM+PM)? I did see this in 2008 ncees sample exam, but I am not sure if this is the general rule. I have another question about the R134a P-H chart. Will the ncees give...

Air flowing at a rate of 3600cfm, and initially at 80F db/67 wb, is passing through a spray of water solution, which has stabilized at 100F. assume a 0.05 bypass factor for spray chamber. What is the flow of dry air at initial conditions (lb/hr)? I am a little confused. How to solve this...

A room has the following: sensible heat gain = 90,000btu/hr latent heat gain = 40,000 btu/hr supply to room = 60F The room is kept at 82 db. When calculate air flow to the room, why only the sensible heat gain is used? Which page of MERM focus on this information? Thanks in advance.

I found App24F and direct isentropical equation will generate different results. Which one will be used? For example, Linderburg 500 practice problem 29-1. I get result of 1319R using equation. the solution is 1375R using air table. Did I do anything wrong? Thanks.

I used the info from MERM figure 46.17 "S-N curve for steel". But I didn't get the same result. Did I use the correct equation? Thanks.

When preparing, should I focus US unit only? or I need prepare both? Thanks.

It is a sample problem from 2001 T&F. #511 My thought is gate valve will have less resistance.

In which temperature Cp should be used, T1 or T2 or average? I found the NCEES 2001 sample exam #538 (T&F) use a air Cp of 0.24 btu/lbm-F. It seems like low temperature (T1) was used to find Cp. Any comments? Thanks.

For the #519, the given answer is B--75710LBM/HR, however, why the turbine efficiency of 87% was not used into the calculation, which will generate the result of 87020 LBM/HR? For the #526, the given answer used the pump efficiency of 60% into the calculation. If only the water side enthalpy...

Can anyone provide an printable psychrometric chart used in the exam? I think it is not convenient to use the MERM one. Thanks.

Any suggestion for the T/F practice problem book? Thanks.

Hi Friends, I have two questions when I fill in the application form in MA. Can anyone give me some help? Here are the questions: 1. Item 21 on page 3. Upon successful completion of the fundamentals exam, select the classification below that best describes your eligibility for...

Hi, Friends, I plan to take PE exam in Mass state. Besides the NCEES policy, is there any other banned books/material that is not allowed to bring to the exam? I want to bring the practice problems books and want to make some note in the book if it is allowed shown in the exam. I did have a...