Diploma

Yes, a student can pursue B.Tech from Sanjay Godhwad University after completing Diploma but they have to crack the entrance exam.

Hello,
For B.Arch, the above said college is charging INR 42,000 per year.

Of course, you can go for it. Government sector only checks whether your Diploma/degree is valid or not. Also, your university must be registered under government act.
Best of luck.

Keep your will to study and gain more knowledge. If you want to do graduation in engineering but not regular then AMIE ("Associate Member of the Institution of Engineers") is a good option for you.
Details of AMIE are given below:
What is AMIE?
Full form of AMIE is "Associate Member of the Institution

Colleges that I can think of are Acharya, Dayananda Sagar, RV College, MS Ramaiah, KLE, BMS, St Josephs, and MVJ.

Here is the list of colleges:
Al-Kabir D.Ed. College, Mysore
ANTS Animation Training School, Mysore
Farooqia Women Polytechnic, Mysore
J. S. Medical College and Hospital
J. S. Polytechnic for Women
Karnataka State Open University, Mysuru
Sri Jayachamarajendra College of Engineering.

There are no part-time Diploma courses available. You can pursue skill development courses.

The fee is around 20K for polytechnic diploma courses in Ahimsa Women's Polytechnic.

You should have completed Bachelors in robotics or automation.

No, you can't, but you can pursue post-graduate Diploma courses.