Search results

Wow this is awesome! I’d like a free copy please!

I feel your pain.... but I’m not sure if you should speak for everyone’s income, in light of our current worldly events.

You’re not being irrational, I’ve thought the same thing as well. I’ve even considered contacting NCEES to inquire on this situation...

Thanks guys, that helps a lot 👍 @Chattaneer PE @LyceeFruit PE We're gonna have to purchase more books on protection over here. Heard about Blackburn, but have yet to look into it. Please let me know if you have any other good recommendations for protection references. 

Another problem here, problem #21. We're at loss with the solution, as this is the first time we're seeing a relation between generator curves, to R-X diagrams, and to a distance relay. Does anyone understand the solution or is able to provide more clarity? 

Question on this one - Why is there a 0.1 ohm resistance in the equipment grounding conductor? Didn’t see it as a given in the problem - the problem specifically states “A single-phase load is connected phase-to-neutral and is feed from the source with each conductor, including the equipment...

Hello, we’re working on the same problem set, but from book #2 now. We’ve got a question for problem #19 below. The solution says that there is no neutral in the wye-wye transformer to carry harmonics. However, going back to the question.... we don’t see a mention of a wye with neutral. For...

hello again! I'm here doing some problems on my lunch break and am a bit confused with this one..  So I see in the solutions that the positive, negative, and zero components were first derived.  I am a bit confused with the -30° and 30°... I know that since this is a delta-wye transformer...

Okay one more question here. The solutions to this says the answer is a) Profile 1 "for the given circumstances."  We were a bit lost with this solution. If there is no load, shouldn't the voltage remain the same from send end to receiving end (Profile 2)? Why does voltage increase at the...

Perfect, I’ll def print this out also for my references. Thanks so much again!! Sent from my iPhone using Tapatalk

My initial understanding was that that (a) is a wye-delta connection? Or can I view these diagrams interchangeably for both the high and low side? 

Please forgive my ignorance... but which one these is the delta-wye connection? The H represents the high side, and L represents low side? 

hey @Chattaneer PE I've got another problem here from the Cram for PE test. I probably need to refresh myself on symmetrical components fault analysis after this...   Why is the j0.07 reactance not included in the zero-sequence portion of the circuit? Also, is it standard to always assume V = 1...

thanks again @Chattaneer PE ; this all makes sense now, appreciate you getting back to us so quickly  😊 

Thanks so much for the detailed response on both problems! Do you happen to have any recommendations on books on inductors, frequency, ripples, reactance, etc? You gave a great explanation, but we don’t know what to reference if we ever come across this problem (other than google).

Hey guys, I know this is a simple problem, but can anyone provide their feedback on attaining the answer to this? The solutions manual says it's (D), but we had initially assumed the answer was (C) due to no ground. 

Thanks for the mention Chattaneer!  Anyone on this forum have any good recommendations of references (books, practice problems, websites, etc.) for study on circuits/electric power devices? I feel like this is my weakest section on the PE exam. 

I’m also located in the Bay Area, and took the test numerous times. I also have no idea what I’m doing wrong here. Are you also open to study groups?

thanks MEtoEE! Your explanation makes a lot of sense. I'll have to make sure to tab this 1PH equivalent in my references.

I have the solution to this problem, but am currently confused. I understand the process it took to get the answer. However, what is the "giveaway" in this problem that it is a wye-source serving the delta load? What wording gives the assumption that it's a wye-source versus a delta-source?