The three$-$phase inverter circuit's average voltage $V_0$ over load $R$ is $.$

a$)V_{dc}=\frac{3\sqrt[\phantom{2}]{3}{V}_m}{}cos$

$V_{kct}=V_n=\frac{V_{dc}}{V_{da}}=cos$

b$)$

C$)V_{dm}=\frac{3\sqrt[\phantom{2}]{3}{V}_m}{}$