The Maximum Efficiency of a Full-Wave Rectifier is
81.2%
Step 1: Given
The efficiency of the rectifier is .
The maximum current is .
The DC current is .
Step 2: Formula used
, where is the power of DC power and is the AC power.
, where ,is the root mean square current, is the forward resistance, and is the load resistance.
Step 3: Find and
Find an expression for by substituting in .
Find an expression for by substituting in .
Step 3: Find Efficiency
Find the efficiency by substituting the obtained expressions in the formula. For maximum efficiency the , so .
Find the percentage by multiplying by 100.
Hence, the answer is (D).