A 132 kV transmission line has the following data: Weight of conductor = 700 kg/km; Length of span = 250 m; Ultimate strength = 4375 kg; Safety factor = 2. Calculate the height above ground at which the conductor should be supported. (Ground clearance required is 10 m.)
1
15 m
2
11.25 m
3
12.5 m
4
13.7 m