Q.The inductance of single-phase two-wire power transmission line per  km  gets doubled when the 

  • ADistance between the wires is doubled 
  • BDistance between the wires is increased four fold 
  • CDistance between the wires is increased as square of the original distance 
  • DRadius of the wire is doubled 
Correct Answer : (C)

Distance between the wires is increased as square of the original distance 

Hints :

The inductance of single-phase two-wire power transmission line per  km  gets doubled when the Distance between the wires is increased as square of the original distance.

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