MHTCET 13 May 2023 Shift 2 Solved Paper

We know that, efficiency of full wave rectifier =0.8
efficiency of half wave rectifier =0.4
According to question, 0.8=x,0.4=y
⇒x=2y
Alternate solution We know that, efficiency of full wave rectifier is twice the efficiency of half wave rectifier. Therefore, x=2y.