Power Systems
The fact that current density is higher at the surface when compared to centre is known as

All of these
 carona
 proximity effect
 skin effect

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Power Systems
The VSWR of transmission line is

 Directly proportional to characteristic impedance and inversely to load impedance.
  Directly proportional to load impedance and inversely to characteristic impedance.
 Directly proportional to voltage minimum and inversely proportional to voltage maximum.
 Proportional to load and characteristic impedance.

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