Q.If the frequency of a transmission system is changed from  50 Hz to 100 Hz, the string efficiency

  • AWill increase
  • BWill decrease 
  • CRemain unchanged 
  • DMay increase or decrease depending on the line parameters. 
Correct Answer : (C)

Remain unchanged 

Hints :

If the frequency of a transmission system is changed from  50 Hz to 100 Hz, the string efficiency Remain unchanged.

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