Originally Posted by SK Bukhari

questions in my mind
dc to dc converter a)convert dc to dc b)dc equivalent of ac transformer c) step up or step down dc d)all above right choice is d
when load on isolated generator increase than a) speed decrease
rectifier convert ac in pulsating dc
frequency of 60 hz full wave rectifier is 120 hz
one question is about converter's application i think option is all of above
hoe many nand gates are used for or gate right choice is 3
flip flop is used in a)counter b)register c) memory d)all right choice is d
thyrister turn off below holding current