विधुतग्राही या पेंटोग्राफ। Pantograph train how it work। Contact wire। Catanery wire in hindi
Channel: RAZA PRANKER FAN
Date: 01/09/2020

Dosto is video me locomotive me lage pantograph ke baare me bataya gya hai ki pantograph kaise kaam karta hai 
About video :- a pentograph intracting with the overhead catenary  and it's element 
Also known about rail track, contact wire, catenery , wire, dropper, mast pole  , span distance between two mast, arms of pantograph.#The knowledge