Distance

You may evaluate MBA Manufacturing System distance learning course run by BITS Pilani WILP which will meet your requirements of both Production and Operations.

NMIMS is a better university for correspondence course.
Check the below link-
https://www.shiksha.com/mba/distance-mba-home

Hi,
Kindly, refer the following link for required information:
https://www.shiksha.com/top-10-institutes-for-distance-correspondence-mba-article-6301-1

If you are working than distance education is a good option to enhance your skills. You just need to put extra efforts to cope with work and study. Today, more than a third (30-40%) of the total 1.32 crore students pursuing higher education in India are studying through ODL - under the Indira Gandhi National Open University (IGNOU), 14 state open universities and more than 200 dual-mode (which have both regular and distance-mode streams) universities and institutions.

Kindly refer to the link below:
http://study.com/articles/List_of_Free_Online_Art_Courses_Lessons_and_Tutorials.html

Since pursuing Diploma after completing class 12th will take one or two years, so you need to complete your Bachelor's through lateral entry. You haven't specified your Diploma course.

Hi Somesh,
You can prefer Pondicherry Central University, which is the best government university offering international business program.
All the best.

NIBM is a good option because of its better brand value and good consideration for job opportunities, also the course is designed in a good manner for learning. Overall, go ahead with NIBM.