By which of the following methods string efficiency can be improved?
A. Using a guard ring
B. Grading the insulator
C. Using long cross arm
D. Any of the above
E. None of the above
By which of the following methods string efficiency can be improved?
A. Using a guard ring
B. Grading the insulator
C. Using long cross arm
D. Any of the above
E. None of the above