The sag of the conductors of a transmission line is 2.5 m when the span is  250 m. now if the height of supporting tower is increased by 25%, the sag will 

  • AReduce by 25%
  • BIncrease by 25% 
  • CReduce by 12.5% 
  • DRemain unchanged 
Correct Answer : (D)

Remain unchanged 

Hints :

Transmission line connects 


A 3-phase 4-wire system is commonly used for

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