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I'm taking mine on December 7(MONDAY). I didn't know that Pearson vue testing center is open on SUNDAY like your schedule (December 6).

It depends on your State board. Ours here is up to 3 times.

I reviewed basic Math like these especially the matrices since it is the fundamental Math used for Z-bus and Y-bus matrices. 

I have the September 2020 edition and the answer here is letter D. You might have the older version of his book.

Just a follow up question. So since the conductor circuit is less than 100amp and did not state in the problem that the termination or device is 90 degrees, we should use the 60 degrees column under T310.15(B)(16), correct? ,and the answer should be #6AWG? @akyip

I just used the reference handbook as my guide but I don't used most of their formulas exactly the way they show it. Just for example that Voltage drop formula. It say that if it is 3 phase you will need to use K=2/sqrt of 3. But in my mind, the 2 will just cancel to the formula and it will end...

I got it right,though. I used Zeff=0.08ohm/1000ft for p.f=0.85 column on Table 9 chapter 9. Vdrop-3phase = (sqrt of 3)(Iline)(Zeff)(length)=(Sqrt of 3)(566)(0.08/1000)(100)=7.84 Volts (answer B)

without seeing the actual problem, I would just assume that my given below are correct. Is this from a particular practice problem? You won't be able to use the integration using your calculator because the unknown is the current. You will need to manually integrate it similar to the solution...

Which part of the solution you don't understand, though? The formula for efficiency is efficiency=Pout/(Pout+Core loss+Copper loss). Pout=KVA output(pf)=10kVA(1.0)=10kW Core loss=No load loss=Open ckt power consumption=69W Copper loss=(I^2)R  where I is the current at the high-voltage side...

I have a concern with this problem, though. The problem was asking the "MAXIMUM" power transmitted. should we just use Pmax=(Vs)(Vr)/X ,where phase angle should be 90 degrees during maximum power?

Can I get one as well? 😊

Regarding any CBT PE exam, When you are asked about a Code problem? Are they going to give you the access of the whole code book in PDF? or are they just going to give the limited pages of the code book specifically to solve that code problem?

Discharging coil can be found in a capacitor bank protection. They are typically use to discharge any residue from the capacitor after the bank is switched off due to fault or any other situation that the capacitor bank needs to be out of service.

Now that we are transitioning from Pencil & Paper to Computer Based Test for the PE Power, what is you strategy in taking this from open book to a closed book exam? Here are my personal strategies: 1. Get familiar with the PE power reference handbook  2. As much as possible, don't...

what problem number is this?

I haven't seen the Cram Vol.4  yet but this is my personal explanation. If you know where the square root of three and 30 degree phase shift came from in a 3 phase balanced system, you will be able to derive any polyphase balanced system. As you mentioned above, each phase is separated by 90...

Table 430.251(B) is the maximum LRC for the selection of Disconnecting means and controllers. Hope that will enlighten you.  :)

One of the best technique I learned as well, in terms of power factor correction using CAPACITOR BANK. :)   **correction to your formula though, it should be: Qc = P * (tan(theta old) - tan(theta new))  :)  

Still keeping up the pace, solving problems after problems. :) . Excited to be with @Zach Stone, P.E. live sessions this coming August. :)  

45minutes to go..... I'm excited to know who are going to be the winners... :) :)   :)  . Hope I win :)