When a line commutated converter operates in the inverter mode

A three phase overhead transmission line has its conductors horizontally spaced with spacing between adjacent conductors equal to 'd'. If now the conductors of the line are rearranged to form an equilateral triangle of sides equal to 'd' then

The transient stability of the power system can be effectively improved by

The distribution system shown in figure is to be protected by over current system of protection. For proper fault discrimination directional over current relays will be required at locations