JEE MAIN - Physics (2005 - No. 1)
In a full wave rectifier circuit operating from $$50$$ $$Hz$$ mains frequency, the fundamental frequency in the ripple would be
$$25$$ $$Hz$$
$$50$$ $$Hz$$
$$70.7$$ $$Hz$$
$$100$$ $$Hz$$
Giải thích
Input frequency, $$f = 50\,Hz \Rightarrow T = {1 \over {50}}$$
For full wave rectifier, $${T_1} = {T \over 2} = {1 \over {100}} \Rightarrow {f_1} = 100\,Hz.$$
For full wave rectifier, $${T_1} = {T \over 2} = {1 \over {100}} \Rightarrow {f_1} = 100\,Hz.$$