Problem $2($a$)$ For single phase to dual bridge based, single phase cyclo$-$convertor operating in non$-$circulating curent mode with pure resistive load. $($i$)$ Draw the circuit diagram showing all releveant components. $($ii$)$ Briefly describe the circuit $(3)$ and beriefly explain the working princlple $(3)$

$($iii$)$ Draw the inpout and output voltage waveform if the supply frequency is $50$Hz to the cyclo$-$conventer and desired output frequency is $\frac{1}{3}$ of the input frequency, Also show the approximate mean output voltage waveform. $(3)$

Problem $2($b$)$: For a three phase, voltage source, square wave, inverter, elaborate on the process of determining the Load Phase$-$Voltages for any one phase for any single switching sequence.