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The errata revised the multiple choices so A is the The Three Positive sequence Voltage phasors instead of the Zero Sequence current phasors, making the solution description correct.

This is my understanding of the problem: Only max average demand is registered: t=15min: Average: 25kw | Max remains at 35 kW t=30min: Average: (50-25)/2+25=37.5 | New Max 37.5 kW t=45min: Average: {[(75-50)/2+(75-50)/2]/2}+50=62.5kW | New Max at 62.5 kW t=60min: Average: 50KW | Max...

For the wattmeter circuit below [Question from Graffeo #74], which is the truest? Per the solution the answer is (C) But I am unable to arrive at that answer. I thought that: W1=VAC*IA*cos(θ-30) W2=VBC*IB*cos(θ+30) so; a) Check if W1=0 >>>cos(60-30)=0.86 : FALSE b) Check if W2=0...

OP my understanding is that in a power system you have to clear the fault, you don't know what feeds are going out to BKR 7 and 6; they might be connected to another station for all that you know which is why you need to trip a breaker on the right of BKR 4. Per the solution of 2,7,6. It means...

I have very limited knowledge on the Exam, from what I learned is that the exam held electronically.   What I want to know is whether we would be provided a blank hard copy paper in order to do our calculation while taking the exam?