Networks Analysis and Synthesis

Q1: In a 3 phase system, the zero sequence component of line to line voltages is zero

A if line to line voltages are balanced

B if line to line voltages are unbalanced

C if line to line voltages are balanced or unbalanced

D if degree of unbalanced in line to line voltages is small

ANS:C - if line to line voltages are balanced or unbalanced

Zero sequence component of line to line voltage is always zero irrespective of degree of unbalance.



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