All three are good. In terms of rankings, DTU is the top ranked one followed by Thapar and last PEC. However the rankings are overall for each institute. One cant say that for CE these are the best. That would be a wrong assumption. So if you get in any one of them, they are good places to study in.
Candidates can check B.Tech Cut off for Top IITs & NITs here.
Hey As per the Careers360 ranking, DTU, Delhi is the best college among the three. Source: https://engineering.careers360.com/colleges/ranking
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