A single phase Inverter with square wave output voltage will have in its output waveform a fifth harmonic component equal to ______ percentage of the fundamental

The insulation resistance of a cable of length $$10$$ km is $$1$$ $$M\Omega $$. For a length of $$100$$ km of the same cable, the insulation resistance will be

In order to have a lower cost of electrical energy generation,

The positive sequence component of the voltage at the point of fault in a power system is zero for a _________fault.