hello bharath, for general category getting a psu's is really hard. according to psu's no of vacancy it is really hard to get a call if your rank is above 200-250. i hope you have understand. you may apply in state electricity board examination where gate score is not mandatory. but you will get some priority during interview if you have valid gate score. there are a lot of maharatna companys which brings requirement during july /august for gate qualified candidate. so dont loose hope and be confident.