Hello chakravaram

I hope you are doing good . I would glad to aware you that if we talk  about the placement scenario of ece ,eee ,civil  in the three universities mentioned in your question , i would say amritha university is the best . Amritha has very high alumni network that civil students also get placed on campus easily . Huge number of company visit in amritha  due to its high nirf ranking . Amritha brand is much much high than vit and sastra

Hope you found this answer helpful. Good luck for your future