Question

in a half wave rectifier the applied input a.c power is 100w and the output d.c power is 50w.What is the efficiency of the rectification ???​

Answer 1

Answer:

Although 100 watts of a.c. power was supplied, the half-wave rectifier accepted only 50 watts and converted it into 40 watts d.c. power. Therefore, it is appropriate to say that efficiency of rectification is 40% and not 80% which is power efficiency.