GATE 2015 EE – SET 1 – Question 8

Solution  :

Given date duty ratio δ =0.4

Input voltage = Vi = 20 V

Battery voltage E =  5 V

Output voltage = Vo  = δ Vi

V0 = 0.4 x 20 = 8V

Charging current I = Vo – E ⁄ R  = 3/3 = 1 .

Hence , the correct answer is 1.