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rg1,   I understand what you did, and this is probably a misunderstanding on my part, but the original problem indicated the polarity was on top for both coils.  If the current is flowing down in the left path across the 2 k-ohm resistor, would it not also have to be flowing the same direction...

Well I cant seem to get the math to work on this either.  Glad rg1 can help on this one!

What I believe is the "C" written in Red serial killer font.  :) (My penmanship is also terrible.) The 150A is the breaker device will trip on a fault associated with the the feeder running to panel PL2D, or a fault within the Panel PL2D bus.  This type of panel is called a "MLO" (main lug...

I dont think anyone gets thaaat excited for the PE exam.

Hazwoper sounds like a norad super computer who wants to play global thermo-toxic war.

10 hour was a corporate requirement. By the end I wanted to take a power drill to my temple.

Some states are specific to the discipline you take.  If you take the structural exam you cannot sign fire alarm drawings and so forth.    

I'd like to add... in 11 years I have worked with Commercial, Industrial, and utility clients in the largest metropolis in the world... I have had ZERO jobs involving auto-transformers.  These things are a purple unicorn used in specialty circumstances.  

I would agree it sounds like a fundamentals thing.  From what I can tell your looking to plug and chug the formula without the full understanding where the equation applies (or more important what the terms area).  The "N" terms are not the voltage.  Its the number of turns for that coil.  A...

I believe the answer key is correct.    Single Phase transformers can be wired as Auto transformers in one of three (technically two) ways.  In one way, the coils are additive (boost) and increase the supply voltage higher then what would otherwise be capable if configured normally while the...

I've seen this and will respond.  But working the weekend and life issues at home... I'll try and respond before Monday.  

I think you'll find a binder per topic is a bit excessive.  I had a single larger binder, tabbed, for each category on the syllabus I needed reference on.  The material in this binder was not generic or extensive.  It was specific, targeted to my weakness or to provide quick reminders for...

I think part of it is most people don't have any experience or ability to relate to this incident.  Its Scuba Diving, in a dark cave, narrow passages, with with fast currents.  As I understand it from you guys, that's difficult and a very niche experience. Personally speaking, my only...

So with all said an done... was this just media over-hyped?   I do not doubt it was potentially dangerous as a diver did die or that the boys would have survived if left alone, but the efforts actually required to save them were all pretty low tech, strait forward, and rapidly advanced.  

A Clear map of the latest flooded areas.

Im glad they are being rescued but it kinda seems anticlimactic after all the hype and dangers.   how "tesla" engineers were flying in and talking about boring down to save them and lack of oxygen (ironically due to all the people trying to save them using it up) and rising flood waters. In the...

This (your story) reminds me of  one of Indiana Jones movie when he was younger in the caves. 

Just a few tidbits from different news sources. "The trapped group consists of boys aged 11 to 16, and their 25-year-old football coach."  (Hes basically a kid himself.) and from CNN reporting locals accounts: The Tham Luang Nang Non caves are known locally as off-limits, a dangerous place...

Would not caving during monsoon season be a good lesson learned? My heart goes out to them, but your spelunking / caving in what seems like a fairly complex cave system with im guessing inadequate knowledge of the area and conditions. my view on the matter is you only go into the earth when...

Simple: Knock the kids out, strap a mask to their face and duct tape it for good measure, lash the kids to their backs,  (These are Navy Seals after all)  and pull everyone out through the tunnel.  We are engineers!  We can science the **** out of this! (Although, this story sounds...