why 3 phase only ? why not 6,7,8,9 12 phases not explain
polyphase, 60 degrees, power poles, overhead, hvdc, high voltage, AC, alternating current, experimental, bus bar, transformer, GE, PTI, power technologies in..."> why 3 phase power why not 6 or 12,
why 3 phase power,
why 3 phase power why not 6 or 12 in hindi,
why 3 phases,
why 3 phase supply,
why 3 phase