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The positive (Z1), negative (Z2) and zero (Z0) sequence impedances of a solidly grounded system under steady state condition always follow the relation
1. Z1 > Z2 > Z0
2. Z1 > Z2 < Z0
3. Z1 < Z2 < Z0
4. Z0 > Z1 > Z2

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Correct Answer - Option 1 : Z1 > Z2 > Z0

Positive Sequence Impedance: The impedance offered by the network to the flow of positive sequence current is called the positive sequence impedance.

Negative Sequence Impedance: The negative sequence impedance means the impedance offered by the network to the flows of negative sequence current.

Zero Sequence Impedance: The impedance offered to zero sequence current is called the zero sequence impedance.

The positive (Z1), negative (Z2) and zero sequence impedances of a solidly grounded system under steady state condition always follow the relation:

Order of sequence of impedance is

Z> Z2 > Z0

Where, Z1, Z2 and Zare positive, negative and zero sequence impedances

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