QII. THEORITICAL UNDERSTANDING AND KNOWLEDGE ORIENTED QUESTIONS

$6.$ Draw the circuit diagram for single phase quasi square inverter and the required output waveforms. $(5$ Marks$)$

$7.$ With the help of circuit diagram given below $($fig$3),$ draw the output voltage vaveform for highly inductance $\backslash ($ L $\backslash ).(5$marks$)$

Figure $3$: circuit diagram

$8.$ A $3-$phase full$-$wave bridge rectifier is required to feed a $1500$ resistive load from a $3-$phase $127$ volt, $60$ Hz delta connected supply. Ignoring the voltage drops across the diodes, calculate: $1.$ the DC output voltage of the rectifier and $2,$ the load current $($draw the circuit diagram also$).(10$ marks$)$