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omniware19

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About omniware19

  • Rank
    Intern

Previous Fields

  • Engineering Field
    Electrical electronic
  • License
    EIT
  • Discipline
    Electrical
  1. R. Steele, Perhaps you will have a better luck finding the information you need in Mech Handbook related to thermal topics. The electronic components housed in the control panel have maximum junction thermal temperature any where from 85c to 110c. Once they reach this temperature they tend to behave badly or be in the thermal shutdown state. 40 degree Celsius would be around midpoint of ambient temperature with convection cooling which is achievable in the enclosure. It also makes mech engr happy.
  2. Ris, I submitted mine with part B for references where they hand-filled and sealed in the envelopes. Their contact addresses/phones would be of their own choices (I never get to see it anyway). The sealed envelopes would be mailed along with the application. My references are the same as those listed in the NCEES record (for consistency) and they should be listed as 'verify' by NCEES. The CA board has access to it. If you attended graduate school, the transcript from graduate school is adequate (my case), undergraduate transcript is unnecessary; however, for NCEES, you need to submit both because they need to verify your educational background. The board can access the NCEES account for your transcript(s) verification as well, but more is better so just send them. Transcript(s) can be submitted electronically (fastest way). My application is for electrical which I think is applicable to civil as well. If all is well, the board will send you e-mail to notify you that your application is complete (if you owe them something) and forward to technical review. Regards,
  3. Proof: 1) S=P+jQ = VI* if P=V*I then, 2) S=V*I + jQ = VI* 3) V*I + jQ = P+jQ 4) From like term in 3), P=V*I. Verify, let V=v*exp(a), I = i*exp(b) S=VI* = vi*exp(a-b) = P+jQ S*=V*I = vi*exp[-(a-b)] = P-jQ S+S* = 2P = 2vicos(a-b) P=vi*cos(a-b) = vi * R{exp(a-b)] = Re[vexp(a)* iexp(-b)] note that P is real so that P=P* P = Re{ vexp(-a)* iexp(b)] = V*I
  4. Hi Evan, Like any cloud services, Azure let you create your VM machine like your own local host PC. First you could start out experimenting by interface to your local host server then deploy your solution to your cloud server. If your solution works in your local host setting, it will work on cloud setting. It looks like the sensor is IoT supporting MQTT (Mosquitto) publish/subscribe protocol (ISO standard). If your host (local or VM cloud) is Linux then there are a lot of free s/w tools available with little programming effort to get you going. Take a look at python s/w tool set in this area. Normally you would spend more time configuring and learning about IoT service of the provider of your choice than doing it your own and your solution may not be portable between providers since each has their own ecosystem. If you are with company that buys IoT services from cloud provider then someone there in your company can set it up for you. Good luck.
  5. I am in the same situation, finding five references 'who can reflect your character and diversity of your experience' and have to be P.E is the hardest part. My NCEES record is blank in this area, but I submitted application to state board anyway knowing I may never be licensed. At least I know that I tried my best with state application for anything I can provide. My references to state board are the former supervisors and co-workers, none of whom is licensed. I am waiting to hear from the state board.
  6. Hi fyrfytr310, I took mine in Pomona fairplex. Any one who will go there for the exam should pack food and water or you will be starved like I did. It is a fair, but not during those hours.
  7. PE: Electronic many many years out of school and luckily passed as 1st time taker, same for FE. Better very late than never and I figured that they won't have many years to collect my license fee either. The duration between my FE and PE was almost six months. After receiving the EIT certificate that took nearly two months to receive then I signed up for PE. Total of four months on preparation: - NCEES PE practice exam - Do the test run on it first then verified the answers. Reviewed the materials that I failed. Spent hour or so each evening, few hours on weekend at my own pace. Two weeks before exam, did the test run again and refined the study. Stopped study two days before the exam to relax. - FE reference handbook + FE review manual + anything I can find in the old books in my garage. I realized that through these years, physics has not changed. Circuit analysis is still analyzed the same way. Transistors have not changed a bit either. If that is the case, why having specific book is more helpful than the others ? The pain from the electric shock I got decade ago would produce the same pain I get today. The test is not about technology trend or latest research papers. It was about the same old fundamentals that we forgot. For those who failed, focus on the area of your weakness after you practiced the sample exams. Don't focus on study to pass the exam, instead focus on understanding the concept posed in the problems. If you study just to pass the test you will fail when the exam change as they always do. That is why many repeaters still fail. NCEES practice exam is the best material for us because it practically tell us what to expect, the level of difficulty and the type of questions. I saw peoples hauled so many of books with them and I was wondering if they rather spending time solving the problem than thumbing through their books. This was not a good sign. I too brought four books with me and probably spent no more than few minutes on them. I just felt guilty if I did not take them. They are not that useful. I should have taken only one reference book as I forgot to bring my lunch. I only had one bottle of water so I took the test starving. Now I got 6 minutes per problem. If I spent more than 3 minutes, then I realized that I wandered in the wrong path. I stopped. It appeared to me that they designed the test that way. The concept of the test is to gauge whether you know the subject or you don't. If you know, you can solve it under 1 minute instead of 6, 3 minutes max. I went through easy problems first, skipped if I did not how to solve it right away. When I revisited the old problems, I read and reread and understood what they asked for. The rule is not to solve it brute force, read the problems carefully. Some problems are straight some need to look in different angle. The information given in the problem is not always relevant. Maybe it is designed to throw you off course. I wish I knew my score, but I don't think it was more than 10 incorrect answers.
  8. Hi All ! After lurking for the past ten months, I decided to signup as a new member of this board especially after learning that I passed the NCEES PE (electronic, control, communication) a short while ago. I took FE last Oct 2018 and got my EIT certificate in Dec 2018. After that I geared up preparing for FE for this past April 2019. Fearful that I would fail so I have to study harder since I have been out of school for much too long. It is too embarrassing to say how long. If I have to take the test again, I would definitely fail since I forgot all of it the very next day after the exam. When I took the FE (CBT), I knew for sure that I passed coming out of the exam room because I knew then that only a few problems I could have answered incorrectly, but not when it came to PE exam. I was depressed since I came out of the PE exam feeling uncertain of several problems although I did not think my answers were wrong more than 10 or 15. In the worst case, maybe 20. Everyone there were much younger and much smarter so if somebody would fail it had to be the older guy which is me, I thought. Now it is all behind me and I can reach my personal goal of being in the club and to honor the profession that is providing for my family all these years. Congratulation to those who passed and not to give up for those who did not pass yet. Thanks
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