Power Systems
In a Gauss Seidel load flow method, the number of iterations may be reduced if the correction in voltage at each bus is multiplied by

 Lagrange multiplier
 Blocking factor
 Acceleration factor
 Gauss constant

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Power Systems
The skin effect shows that

 current density is lower at the surface of the condutor
 the distribution of AC current is uniform through the cross section of the conductor
 current density is more at the surface of the condutor
 current density is more at the centre of the condutor

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