Positive, negative and zero sequence impedances of a solidly grounded system under steady state condition always follow the relations

Question

Quizplus · Accepted Answer

In a solidly grounded system under steady state conditions, the positive sequence impedance (Z1) is usually the smallest, followed by the negative sequence impedance (Z2), and the zero sequence impedance (Z0) is the largest. However, the given options do not include Z1 but mention Z4, which seems to be a typographical error. Assuming Z4 is meant to represent Z1, the correct relation based on typical system behavior is Z0 > Z1 > Z2, but since Z1 is not an option and assuming Z4 is intended to represent positive sequence impedance, the closest correct relation provided is Z0 > Z4 > Z2.

Positive, Negative and Zero Sequence Impedances of a Solidly Grounded