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What did you take Wael?

I personally thought I was doing ok until the afternoon, it was brutal! Goodluck to all!

Thats just it, they spin in opposite directions?

I meant Spinup Exam 5, problem1

IT has 2 diagrams, asks which sequence they are +, or -..one looks + and the other looks - to me, whats wrong here? answer says +

IS the handbook any good?

Is there anywhere I can get a cheap copy of the NESC?

NVM, I got it now, was looking in wrong place.

It asks for smallest copper conductor size allowed on a surge protector device, refers me to article 280.23..then gives the answe as 6 awg, I dont think this is correct, in article 230.26 it says line and grounding conductors shouldnt be any smaller than 14 awg...are they wrong in the book with...

The problem asks whats being measured during an insulation test? It in the back says resistance but gives answer B, current flowing through a dielectric...option a is resistance...which is what I would have chosed, which is correct?

What about 1/2 wave rectifier, 3 for 3 phase and 1 for single phase?

It asks how many thyristors are required for a 3-phase full wave rectifier...the answer is 6...but i thought full wave rectifers were made of diodes? Does it also take 6 diodes to make a 3 phase rectifier? How many thyristors needed for a 1 phase rectifier? 2?

I have the IEEE values, just thought NEC had their own values as well..maybe im worng

Does anyone know whats considered high, medium or low voltage in NEC?

Thats a good question..I took the exam last year...failed with a 48/80...I know the NCEES, Spin-up and CI exams very well...the exams are good practice but the actual exam will be more difficult..lots of floks said these exams helped them pass, so I amhoping thats the case for me this time around

OK, I know if there is delta-delta, there is no phase shift from V_ll from primary side to secondary side, generally. But where does dot convention come in? for example if primary side of a delta-delta has dot at top on primary side and dot at bottom of secondary side, does this knock the fact...

Does anyone have a diagram for + and - sequence voltages/curents for a wye connected load that will show V_ln, V_ll, I_line and I_phase? I know for example I_line = I_phase for a wye load...but do the angles change? for example, if I_line = 30@45 degree does I_phase = 30@45 also? Thanks

thanks..i was trying 1-phase equation

Hey..Im trying to see different ways to approach this question. I see Vll_p*Il_primary = Vll_s*Il_secondary....on either side of the Xfmr...but shouldnt the line current on the generator side also be able to be calculated from S=VI* ? Meaning shouldnt it be also : I = S/V = 50 MVA/13.2 KV ? I...

DID YOU DO SPINUPS? THEY SEEM TO EASY?