engineering recuitment UPCL AE (E&M) 2021 Mock Test Power Systems Transmission and Distribution Overhead Insulators
In a 33-kV overhead line, there are 3-units in the string of insulators. If the string efficiency is 85.8% then voltage across the disc nearest to the conductor is:
1
11 kV
2
7.4 kV
3
19.05 kV
4
9.8 kV