AC Supply 220V and 440 Voltage Difference In Bengali | 220V or 440V | ইলেকট্রিক্যাল ইন্টারভিউ প্রশ্ন

[@giyasuddinansary5332]

Very good videos

[@fusebox4986]

Thanks. Please subscribe my channel.

[@ashimkarmakar6964]

Sir , where did the root 3 came from? Like why are we taking root 3?

[@fusebox4986]

Thanks for comment. I will explain next video why use root 3.