PE Sample Questions & Answers

[alaskachic]

i'm looking to use this new thread just for some good example questions that you think will be helpful on the pe mechanical exam for both am and hvac depth-pm. i have references full of example problems, but the more, the merrier...or something like that! shoot me questions that you think would be helpful for my preparation. thanks!

 

[alaskachic]

NCEES Sample Exam #117- I'm not understanding where this equation came from:

M = Wx/2(l-x)

Can someone help explain this to me?

 

[Shaggy]

that looks to me like the bending moment at a given location of a beam under distributed load. Check out your beam tables in MERM or Machinery Handbook or any Strength of Materials book.

-Shaggy

 

[alaskachic]

thanks. found it in MERM A-114.

 

[alaskachic]

Looking at question #75 and #76 out of the mech PE sample exam by M. Lindeburg. The solution says you can find the equation for sound pressure level out of ASHRAE. I cannot find this equation they are referencing. Any ideas??

Then for #76...I have no idea where they got that equation either. Help!

 

[Capt Worley PE]

NCEES Mechanical #506 and #507. Can anyone lead me to where to get those formula used in these problems?

 

[EngRanger]

NCEES Mechanical #506 and #507. Can anyone lead me to where to get those formula used in these problems?

#506, see the NCEES CD. 1 DOF system

 

[alaskachic]

i'm looking for a reference where i can get a table of properties for R-123. the one in the trane manual only goes to 150F degrees.

 

[Capt Worley PE]

#506, see the NCEES CD. 1 DOF system

Dumb question, but how did you save that?

Edit: Never mind. I just figured out how to use screen capture on it.

 

[Golden Eagle PE]

NCEES Mechanical #506 and #507. Can anyone lead me to where to get those formula used in these problems?

It seems I am not the only person who has asked about #507. I thought it was difficult. I would be interested if there is anyone who was able to get the right answer without looking at the solution.