Answer / k.prakashchandra

In case of LT ,it is the the neutral wire and in case of HT
,the earth/ground is the return path for earth fault current
upto primary of UGT which is delta/star connected.Beyond UGT
earth fault current causes imbalance in phase currents of
gen,resulting tripping of gen on earth fault relay.

i am swathi, b.tech 4th year. In smps(switched mode power supply)we are using diodes,mosfets,igbts for controling of current. And my question is why we did not use thyristors(scr)? it is also act as a switch,then what is the drawback of scr as compared to above transisters> if we use the scr,then what is happening ? plz give reply as soon as possible bcoz i am doing project on smps. plz frnds i want ans for that. if anybody know the ans plz send to my e-mail id /swathi.tadakapally@gmail.com/

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