#Track

[@montu219]

Good knowledge sir jee

[@FaizanAnsari-iq4ve]

Thanks!

[@niyamatullahkhan6639]

Very knowledgeable vidio sir

[@gummalanageswararao9834]

Thank you for your class

[@niyamatullahkhan6639]

Sir point zone ke track circuit aur point zone mai DS point mai circuit kaise lete hai bataye