I have a few friends from both NIT Trichy and CEG and here is what I gathered from my conversations with them. 

• In terms of ranking, NIT Trichy is placed higher than CEG. This is because NIT admits students based on JEE Mains ranking and CEG admits students based on board marks.
• In terms of placements, NIT Trichy would be way ahead of CEG. The college enjoys a better reputation and big firms come for placements.
• For ECE, then recruiting companies visiting the on-campus placements at NIT Trichy are Qualcomm, Texas Instruments, SanDisk, Nvidia, etc. The average CTC offered is 6 LPA. 
• You can also go for higher education if you have a good GPA and great projects.
• The faculty team is overall good. A few of them are extremely knowledgeable and conduct high-quality research. In terms of facilities, NIT Trichy has an edge over CEG. 
• Since CEG is in Chennai, there are other sources of enjoyment but NIT Trichy is 20 km away from Trichy.

Overall, NIT Trichy will be a better choice than CEG.