In a $$3$$ - phase controlled bridge rectifier, with an increase of overlap angle the output $$dc$$ voltage

In a thyristor $$dc$$ chopper which type of commutation results in best performance?

For a $$500$$ Hz frequency excitation, a $$50$$ km short power line will be modeled as

For equilateral spacing of conductors of an untransposed $$3$$-phase line, we have