1. Tool room and training centre ,Patna offer only three courses by now which are
2. Diploma in Engineering and Technology Mechatronics
3. Diploma in Engineering and Technology Production Engineering
1. Diploma in Engineering and Technology Tool and Die under mechanical engineering.

Hi manoj.

As you are b.tech pass out and interested in auto cad so of course you can join any course online or offline.

You can find any center offline and below I will suggest you some online platform to learn.

6 Best + Free AutoCAD Certification , Course & Classes [2019]

• The Complete AutoCAD 2019 Certification Course (Udemy)
• AutoCAD 2018 Free Training & Classes (LinkedIn Learning – Lynda)
• The complete AutoCAD 2016 Course (Udemy)
• AutoCAD 2019 Essential Free Training (LinkedIn Learning – Lynda)
• AutoCAD Class & Workshops for Beginners (Skillshare)
• Free AutoCad Classes (Skillshare)
• I hope it helps if you have any other query inform me