Synchronous Generator PPI problem
Posted 05 April 2012 - 06:12 AM
I have a quetions. Problem below is from PPI Sample exam book: A Synchronous genrator is rate for 3MVA, 11kv, and has a power factor of 0.8. What is most nearly the magnitude of the rated current.
Since the problem does not mention three phase, I used " I = S/V. The solution in the book uses " I = S/(VX 1.73) Can some one explain why we using 3 phase formula instead of 1 phase? Thank a lot.
Posted 05 April 2012 - 10:49 AM
Posted 05 April 2012 - 06:13 PM
The NCEES sample questions do not do this; in the NCEES questions there is no room for interpretation because they state everything you need to know about the problem at hand. Hopefully it will be the same during test time.
Posted 05 April 2012 - 07:00 PM
Posted 06 April 2012 - 04:15 AM
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