A star connected load of 150 per phase is fed from 420 V DC source through a 3-phase bridge inverter. If the inverter is operating in 120° conduction mode, the RMS value of thyristor current is, (in A)

A three phase inverter below has a Y- connected load. The inverter frequency is fo = 60 Hz and the DC input voltage Vs = 220V. The applied control signal is a 180 deg conduction mode. The RMS Line to Line voltage Vo is equal to 179.63V. The total harmonic distortion (THD) is equal to: Select one: a. 48.34% b. 31.08% c. None of these d. 100%

Simulation is NOT required. Please show calculations please. Thank you.