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Is there a rule of thumb for the primary and secondary? For example is the transformer is 12.5/34.5 KV, is the primary the highest KV or just the one on the left? 12.5/34.5 KV Primary/Secondary ??

A single phase transformer with a 120 volts secondary voltage connected to 500' 250 AWG bare copper in a PVC conduit feeder to a load that draws 40 amps and lags at .85. What is the voltage at the load?

In a field-fabricated installation with a nominal voltage rating of 34.5 kV, the minimum air separation between bare live phase to phase conductors outdoors is what?

Bus A is 4740<90 degrees Volts Bus B is 4100<0 degrees Volts between A and B is a line Z=20<32 degrees ohms What is the current at the load?

An ideal 3-phase transformer has a 200:50 turns-ratio, a high-side voltage of 250 Volts and a full load secondary current of 75 amps. What is the KVA of this transformer?

Can someone give me their input on the minimum reserve angle of a diode in a full wave rectifier?

A delta Wye transformer is rated for: 34.5 KV/480 V, 125 Amp primary (high side) line current. This problem used 1.73 * I(line) * V(line) for the power calculation. What made this a 3 phase system in the description above?

Given a voltage and current with different angles (complex), Say voltage angle is 20 degrees and current angle is 30 degrees, 20 minus 30 = -10 which is correct? S= V * I <-10 or S= V <20 * I <-10 and on a drop? Vin = V<20 + I <-10 * R or Vin = V + I <-10 * R

I could not find previous discussions on this problem. I get a max power (Watts) of 4.1 MW I get the answer in the book of 17 MVAR or apparent power of 17 MVA but not watts. 3 * 8660 * 9140 @ 14 degrees --------------------------------------- = 4.1 MW 14 j

3 phase transmission line is rated at 65 KV and 24 MVA. The line impedance is 50 ohm per phase. Assuming line rated values are also the base values, the per unit Z is ? Seems Zbase = Sq rt 3 * 65 KV^2 / 24 MVA I assume the statement "Assuming line rated values are also the base values" makes...

As I understand, resistivity increases and temperature decreases. In #24 they calculate Resistance at 20 C being 13.75 ohm, and at 50 C being 15.4 ohm. Seems their answer does not follow the rule.

Says 60C column should be used for any amps less than 100 or 1-14 AWG conductors when using 310.15 (B)(16) I've never seen this before,

I listed some instruments below that are used by power companies, what am I missing? Multimeter Voltmeter Ammeter Wattmeter Synchroscope Ohmmeter

Spin up has a question 3-04, with Gen A at 3 MVA and 3%, Gen B at 4 MVA at 4%, both in parallel. The answer had the KVA load at 6 MVA. Where did the 6 MVA come from? 3M/.03 Gen A= --------------------- x 6 MVA (KVA Load) 3M/.03 + 4M/.04 I've seen CI in version 1-#13 add the parallel...

I must be missing something on this problem, there are 2 sequence vectors shown. The one on the left has a clockwise rotation symbol (negative seq.) and the sequence of the maxima occur abc (positive seq). The one on the right has a counter clockwise rotation symbol (positive seq.) and the...

On the latest version, copyright 2011, does anyone know of any errors in the answers?

Anyone interested in selling me their used Georgia Tech EE Power manual I would be interested in buying. reply to jflyer60 at hotmail dot com Thanks

I did not pass my first try and got a diagnostic report. Thought it was interesting to see the average passing results on each knowledge area. Anyone have any insight in the comprehending this report?