DTU offers better opportunities. If you are interested in Mechanical Engineering, you should choose DTU. You will get good exposure and the institute has great brand recognition in the industry. DTU placements for the mechanical branch are excellent. The highest CTC offered to the branch goes up to INR 12 LPA. ONGC, and Mahindra are some of the major recruiting companies that visit the campus placements frequently.
DTU is an excellent choice for Mechanical Engineering. It is often compared to IIT Delhi.
Make yourself clear that in which field you want to work. You should choose your choice of branch, irrespective of the college. Both PEC and DTU are decent colleges so the professors in both the colleges will be well-qualified and experienced.
Electronics, Mechanical, Electrical being the circulate branches there are also ample of core companies visiting the campuses as well.
DTU has a number of opportunities available and it is a better option when it comes to exposure and city life. However, if you are looking for a peaceful environment, PEC Chandigarh would be the best choice for you.