Hello Sandeep,

Fee structure for Ph.D in Engineering and Technology at University in Chennai are-

• Indian Institute of Technology,  Madras- Fees- 19,670 annually
• Vels Institute of Science, Technology and advanced studiesStudies- Fees- 58,500 annually
• Hindustan Institute of Technology and Science- Fees - 40,000 annually
• Madras Institute of Technology
• KCG college of technology

I hope it helps

Thank you