Question

आप टेलीफोन केबल वायर व्हिच इज 53 मीटर इंग्लैंड टू द टॉप फ्लोर हाउस फॉर एप्पल ऑन द ग्राउंड अट ए डिस्टेंस ऑफ 28​

Answer 1

Answer:

This means that ever your red wire will be in the minus, there will be ever a blue wire, that means it changes 50 times in 1 second, so we call it 50 hz Friends 440 in 3 phase so that they always say in a face together It does not have current so we measure the same voltage of two faces and 440 VOLTS are called it and not 660 volt.So in this way our electricity flows up and down in the condition of 50 Hz