Telephone wires often snap due to cross flow of wind past the wires. The main reason for this is
Option (A)
The force exerted by the wind on the wires is large in magnitude
Option (B)
Poor quality of the work executed
Wide variation of wind velocity in magnitude
Vortex shedding
Correct Option:
Question Solution:
The ‘singing of telephone or transmission line wire in high winds is caused when the frequency of vortex shedding is close to the natural frequency of the wire