I am writing my 313D test this morning. I have read and re-read the pactice and vip test. Hope I studied enough. Wish me luck.Will let you all know how I did when I get my results... ;)
10/4 good luck!
Write down as many questions as you can remember and PM me and we will upgrade you to Pro Tech :) Try to remember any TXV and Heat Pump questions.
i cant remember the TXV or Heat Pump Specific questions, but one was referring to why a heat pump condenser would frost up, the choices were failed defrost control, and a few other choices i cant remember. one question had a diagram of a compressor start run and common windings in a triangle with 2, 4, 6 ohms one on each leg of the triangle and i was asked which one was start, which one was run. another question referred to what instrument you use to measure something in the A/C lines, i cant remember the exact name but it was something like ethylene glycol, i believe the choices were hydrometer, hygrometer and 2 others i cant remember. I try and see if i can remember any more specific questions. for us.
I just wrote it last week, it was fairly easy test, A lot of the questions had very obvious answers if you knew anything. but at the same time a bunch of questions had 2 answers that could be right. Im pretty positive I passed the test, I would say the practice test helped me get ready for the test, but be careful anyone who thinks they will read the practice test and pass the test. reading the 6th edition textbook on TXV was definitely a big help.
one more I remember is is asked when connecting capacitors in series if you had a 370v 15mf + a 440V 20mf = what would it equal, i knew had to add them but i wasnt sure which voltage to pick, you either had to chose 370V or 440V, i took my chances with 370V because of the smaller rating.
The answer to a 15MFD@370VAC capacitor and a 20MFD@440VAC capacitor wired in series is 8.6MFD@810VAC. (Xt = X1 x X2 / X1 + X2)
You add the VAC when in series. Are you sure they only had 370VAC and 440VAC to chose from? I think you mean the capacitors were wired in parallel.
If the capacitors were wired in parallel the answer would be 35MFD@370VAC. (Defaults to the lowest VAC)
yes you only Had the choice of 370 or 440
yeah it may have been parallel, i just chose the lower voltage cause it seemed more right hehe
Well I wrote my test on Monday and got the results today. I will post it but to read it I will need a donation of $20....Just kidding...lol. Unfortunately I did not pass my exam. There was 135 questions and I got 83 right therefore I came out with a percentage of 69% :-\. What luck!!! Anyway I have the chance to rewrite in a couple of weeks and going to do much better now that I know what to expect ;). I was very nervous going in and took way too long on some questions. Admin I will PM some of the questions I remember and hope they help out other donating members. I will be applying to challenge the low-rise sheet metal tomorrow and hopefully will beat the change over deadline of April 7 when the exam charges go up to $150 rather than the now $100.
I got my results today in the mail, passed the test with flying colours!
good luck chewy on your re-write, take all the time you need writing the test they give you 4 hours to do it! no need to rush and psyche yourself out worrying about time.
What's the full name of the "6th edition textbook" you talked about?
Refrigeration and Air Conditioning Technology 6th ed - B. Whitman, et al., (Delmar, 2009)
Thanks, I will check it out.
Well done on your test Adam. Hope I can do the same. I applied for the low-rise sheet metal challenge on Thursday and I am writing the exam This Monday. I heard it is pretty easy and mostly safety and common sense.
I have the book "fundamentals of HVAC/R" by stanfield and scaves is this book any use for studying for the 313a?
I remember one heat pump question from the exam. it was on the 4way valve.it ask you how many ins and outs are on the valve. so the answers were something like 1out 3in 2out 2in 1in 3out kinda like that.