Power Systems
The equation of area control error(ACE) is

 ACE = ΔPtie +1/ b.Δf
 ACE = ΔPtie - 1/b.Δf
 ACE = ΔPtie + b.Δf
 ACE = ΔPtie - b.Δf

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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.
 For each line, the conductors are characterized by σ c, μ c, εo = ε c and the homog
 G = I/R. R is the AC resistance per unit length of conductor C.

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