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Valoarea frecventei în sistemul electroenergetic

este determinata în principal de:

Valoarea intensitii câmpului electric produs de

o sarcin electric la distana r este:Valoarea medie a capacitii lineice pentru o lini

electric aerian trifazat este ......... fa de cea

a unui cablu subteran.Valoarea medie a inductanei de serviciu pentru

linie electric aerian trifazat este ......... fa de

cea a unui cablu subteran.Valoarea medie ptratic a unei mrimi periodice

se mai numete i: