أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
The big advantage that alternating current provides for the power grid is the fact that it is relatively easy to change the voltage of the power, using a device called a transformer. Power companies save a great deal of money this way, using very high voltages to transmit power over long distances.where as d.c its not ........what ever we generate...that much use....its not convient
