Power Systems
The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be

 400 Ω
 210 Ω
 840 Ω
 420 Ω

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Power Systems
Which statement is not correct for the transmission line parameter R, L, G and C

 At high frequencies at which most of communication system operate the internal inductance of the conductor is neglected.
 The line parameter R,L,G and C are uniformly distributed along the entire length of the line C.
 G = I/R. R is the AC resistance per unit length of conductor C.
 For each line, the conductors are characterized by σ c, μ c, εo = ε c and the homog

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