Power Systems
A transmission line has self and mutual impedances of 0.8 pu and 0.2 pu. Find the positive, negative and zero sequence impedances respectively?

 0.6, 0.6 and 1.2 pu
 0.6, 0.8 and 1.2 pu
 0.8, 0.8 and 1.2 pu
 0.8, 0.6 and 1.2 pu

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