railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Power Systems Transmission and Distribution Mechanical Design of Transmission Lines
Let W be the weight per unit length of the conductor, H be the horizontal tension, and l be the span length, then the sag in a freely suspended conductor is determined as:
1
\(\delta = \frac{{W{l}}}{{8H}}\)
2
\(\delta = \frac{{W{l}}}{{4H}}\)
3
\(\delta = \frac{{W{l^2}}}{{8H}}\)
4
\(\delta = \frac{{W{l^2}}}{{4H}}\)