Q4. A pulse width modulated full-bridge inverter works from a 120V dc input. The inverter frequency is 2kHz. It is operating at a duty cycle of 80%. Analyze and Determine (a) the rms value of the ac output voltage, (b) the rms value of the fundamental frequency component of the output ac voltage, [15] (c) the rms value of the total harmonic component of the output voltage. If the voltage is to be reduced to 50% of the result in (a), what should be the new duty cycle? CLO2:PLO2:C4