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roy167

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About roy167

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    Passed PE

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  • Engineering Field
    Passed PE
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    PE
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    Electrical

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  1. I believe Z(old) and Z (new) is confusing and I believe I brought it to Justin's notice . Z old in the 1st line should be Z new. 2nd line, Z new and Z old values do not match. Go by the basic formula S = (V^2 /Z) S1 = V1^2/Z1 and S2 = V2^2/Z2 subscript 1 = 480 volts or old voltage 2= 400 volts or new voltage v1^2/z1 = v2^2/z2 ( since reactive power KVAR is same) plug and chug, you should get z2 , z1 is already given difference = z1-z2 In real world , impedance should remain same for the given Kvar rating and if you apply different voltage than rated then you should see corresponding change in Kvar??? Problem needs to state some how or give an indication that the kvar rating is the same in both cases.
  2. You would need this sub forum more than me. So I think you should stay here and I won't post any more in this sub forum. All the best.
  3. Hey guys, I passed my FE and PE from NY board. My undergraduate degree is from a foreign country, so I didn't do a degree evaluation and even without points for degree I had about 20 yrs of industrial experience which qualified me for Power PE in NY board. Will I be eligible to transfer my license to CA and or Texas? without more tests etc? The presumption here is I met all the prerequisite which made me eligible to take FE and PE. I understand for civil engineers they may need to take additional exams because of the geographical region but for power PE I hope it is just a matter of registration, fees etc. Can someone who have gone through this or know about how this work please comment on this?
  4. The problem seems simple, but it can tip many of us. For e.g if I convert line voltage of 480v to phase voltage (277<-30) and then use that to divide S (25<41.4) you will get +/- 30 degree phase shift. Even if you used correct phase voltage etc For solving problem likes this if it is ingrained in me that I'm going to get my angle from load(0.75 lagging), all the other division I will do it with magnitude, then we have a less chance of making mistakes. The problem tests the basic understanding of power factor and power factor with respect to what etc. If someone thinks too hard and convert line voltage to phase voltage and then divide (S/V)and then conjugate the current etc, we will get it wrong. But believe me at first we all go through these questions in our mind and should I use this method or that method but over time with practice you will find your quick filtering method.
  5. Trust me, I can see how it can be to get on that horse again. I firmly believe those who pass on the subsequent attempts is much more resilient, deserve much more kudos than the first time time passers. I pray for your success this time.
  6. Hello future test takers, don't you want to pass? I would think at least someone would be discussing something every few days with 4 months left? Unless there are not many Power PE takers this fall.
  7. This might give a wrong impression to someone as it did it to me once. After 2 or 3 questions on different topics I was directed to review the course material. I was asking these questions after I had already studied for few months. I perfectly understand unless you have signed up for a personal coaching, it is difficult for any teacher to respond to so many folks. I just want folks to have a reasonable expectation. The Class is great BTW.
  8. Pass you exam before they tighten the screw! Once you get your license, everyone is at Par. There may be a thing in place to limit the licenses to keep the prestige intact. If a lot of engineers have a license then license will lose the value and thrill.
  9. The point I'm making is even if all the questions were repeated, it would still be of no help. Unless I have those questions in front of me, I practice upon them and then retest. At this point it is all vague memory.
  10. Hypothetically speaking, let's say I wrote April exam and sat for Oct exam and all the questions were repeated. 1st of all, I won't remember those questions because when you sit for the exam, you are so occupied with doing your test then memorizing the question. So I think it will be of no use to know whether a few questions will be repeated and it will be of no use even if all questions will be repeated.
  11. Waste of time, I took a lot of material and 8-10 books, it did not help me answer one question. Of course, each one is different. Doesn't mean one shouldn't take reference material at all. There are people who can't do things such as PU, MVA , power factor formula from memory and if you ask them, they might say oh books helped me answer 4-5 questions. For those who can do a lot of stuff either from memory or little cheat sheet , if you really need help with obscure topics...I did not find reference material to be very helpful (code books are not included in this discussion) For formulas and small stuff here and there, yes your personal notes are very valuable but looking for some obscure information from the books, more power to you.
  12. Does that mean even after passing PE in one state ( you have demonstrated whatever was the state board requirement, otherwise you won't be eligible for the exams), if you move to a different state then you may not be able to practice PE if you are not from ABET school? or ABET not ABET is only a factor before getting your PE? for e.g. work experience requirement. I think if you are not from ABET, then you don't get credit for your degree and you need to show more work experience. I am in NY and NY board requires ABET, I didn't go to ABET school but because of work experience, I was able to sit in for FE and PE. Now some states may not allow you to sit for PE exam if not from ABET but I think once you have PE then reciprocity should not be a problem.
  13. I Can see how it can be confusing. You are correct about series/parallel capacitors are not the same. KVAR = V^2/Z(c), voltage is not the same if connected in Y or Delta. The problem has already given you that 3360 total KVAR is required for PF correction. That means per phase would be 3360/3 whether series or parallel. Then divide by 140 KVAR = 8 units There is difference in Capacitance(ohms) and Capacitor (micro farad) It is like they have given 3 phase KVA or KW and asking to find out what is per phase power in Y or Delta. It's going to be three phase quantity/3 whether Y or Delta.
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