Whenever you travel in a train you might have seen these hanging weights near the poles and a strange connection of wires near to them. What exactly are they? Why couldn’t they just use a simple conductive wire arrangement similar to the normal power transmission system? Let’s learn about the details of auto tensioning devices.

LinkedIn :   / sabin-mathew  
Be our supporter or contributor:    / @lesics  
instagram :   / sabinsmathew  
Twitter :   / sabinsmathew  
Telegram : https://t.me/sabinmathew
FB :   / sabinsmathew  

Voice over artist : https://www.fiverr.com/flfalcon