SSC JE Electrical 2019 with solution SET-1
 The ratio of conductor voltage and the voltage across the disc nearest to the conductor multiplied by the number discs are

Disc efficiency
String efficiency
Transmission line efficiency
Insulator efficiency

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SSC JE Electrical 2019 with solution SET-1
 For a three-layer stranded wire, the number of strands in the first, second, and third layer respectively are:

1, 7 and 14
1, 5 and 10
1, 4 and 8
1, 6 and 12

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