# The maximum efficiency of full wave rectifier is: (A) 100% (B) 25.20% (C) 42.2% (D) 81.2%

The rectifier efficiency determines how efficiently the rectifier converts Alternating Current (AC) into Direct Current (DC). Rectifier efficiency is defined as the ratio of the DC output power to the AC input power. The maximum efficiency of a full wave rectifier rectifier is 81.2%.

Hence, the correct option is (D)