engineering recuitment GATE EE 2023-24 Test Series Power Systems PU System and Symmetrical Components Symmetrical Components
A short three phase short transmission line in phase co-ordinates is represented by a series impedance matrix as \(\left[ {\begin{array}{*{20}{c}} {{Z_s}}&{{Z_m}}&{{Z_m}}\\ {{Z_m}}&{{Z_s}}&{{Z_m}}\\ {{Z_m}}&{{Z_m}}&{{Z_s}} \end{array}} \right]\)
If the negative sequence impedance is (2 + j9) Ω and zero sequence impedance is (8 + j42) Ω, which of the following is/are true?
1
Positive sequence impedance is (6 + j33) Ω
2
Zs = (4 + j20) Ω
3
Zm = (2 + j 11) Ω
4
Positive sequence impedance is (2 + j 9) Ω