Recent content by Derill03

Ok so then if i understand correctly the following should be true: kVAR's at 89% = 4610 kVAR's at 95% = 2958 so kVAR's supplied by capacitor bank should be 4610-2958 = 1652 kVAR This would be true because the capacitor bank will effectively cancel out some kVAR to raise the power factor.

Homework Statement [/B] What is the maximum full-load primary current that you could safely design for a three phase 500 kVA transformer bank to provide if it has a high-voltage winding of 25GndY/14.4 kV? What does the notation 25GNDY/14.4kV really mean? Is it 25kV three phase and 14.4kV...

I think the way i did this is correct because it is asking for the total kVAR needed to achieve 95% PF, i think you are implying it says what is the additional kVAR needed to achieve 95% which would be difference of kVAR at 95% and kVAR at 89%. Thoughts?

Hello All, I need to know if i have done this correctly (its been some time): Question: The 3-phase load at a bus is 9000 kW at .89 lagging PF. What is the total reactive power supplied by a 3-phase capacitor bank that will increase the PF to .95 lagging? Work: 9000kW/0.95 = 9473.68kVA...

Ok so if this fault condition were true, it could explain the shock that occurred, but it seems if you measured across the 120V outlets you would see about 120V-60V = 60V? Hmm I'm not sure that's correct, i know if the transformer is grounded to CT then you get a +120 and a -120 at 180 deg out...

Could it be that the ground clamp has came loose or not hooked up? This could pose a shock hazard, and it would cause the transformer to have no center tap.

Well so let's say the 120v outlets are wired as 220v ok, that would cause the hand tool to run faster i agree but how could that cause a potential to build-up on the chasis and cause a shock? Another possibility I've thought of is what if the transformer has a bad ground connection, then the...

I think part 3 should be about 19.94 ohm using formula R= Ro/6.283L*(ln(8L/d)-1). Unsure how to calculate part 2 at this point still.

So far i have deduced that the voltage is somehow higher than 120 in one of the 2 outlets or higher than 240 in the single 240 outlet, it does not specify which outlet the person switched to when he was shocked. So my thoughts so far lead me to believe one of the outlets is wired wrong and...

Hello I am an electrical engineer freshly out of school and i was wondering if anyone could help me reach an answer to this design problem. I am attempting this problem solely for personal knowledge because in school I never took a course on distribution design. I found this problem looking...

well I do see that you could convert left hand current source to series resistor and volt source, but wouldn't i lose i1? Weve been taught in class don't combine components or transform them if they hold a value your looking for. One thing I am stuck on and this may help me greatly, does each...

what I've posted is a question from a study guide for our test next week, on the attachment is my work. The professor only did SISO examples in class and moved really fast, I am not really sure if i found state equations correctly using KVL and KCL. Any help is appreciated

so would v2 be: ((v1-v2)/(5/s)) - v2/2s - 5/s? my mistake on the cap transformation it is 5/s which is equal to 1/0.2s my bad

Okay i need to find expressions for v1 and v2 and I am using nodal analysis: these are not the final the equations just initial equations by first look I am good finding expression for v1, (2/s)-(v1/1)-((v1-v2)/(2/s)) = 0 Where i am stuck is with the current source and 2 ohm res...

no its public because the 6 characters that follow are ascii for "public" ok i know that is correct. Can you help me understand the OID value some more, i know it starts at 06 08 2b going from my educated guess way of thinking i think it is 1.3.6.1.2.1.1.5.0.4 but to be honest it don't make...