MBA/PGDM

Hi Harjeet,
You may consider BIMTECH-Greater Noida for PGDM because:
1. BIMTECH is a part of the well-known B.K. Birla Group of Institutions with a track record of 28 years in management education.
2. The latest National HRD Network B-Schools Ranking 2016 ranks BIMTECH 5th among the Top Private B Schools and 13th among all public and private B Schools of India.
3. All the four streams (PGDM, PGDM IB, PGRM Insurance and PGDM Retail) are AICTE approved two year post-graduate courses. PGDM and PGDM-International Business (IB) are accredited by the National Accreditation Board and the Association of India Universities (AIU) for equivalence with MBA.
4. Talking about campus placements, the average package offered at BIMTECH ranges from Rs 6-8 lakhs.
I am attaching a link for the fees structure for your reference:
http://bimtech.ac.in/admissions/fee-structure/

You can use MBA in operations management in following manners:
Job: Mechanical Engineer + MBA (ops), it's a combo most core companies looks for and if you are a male candidate. Brush up your mechanical concept, think about industry specific problem areas and which techniques and tools you studied are most relevant.
Research: There are thousands of operational problems in almost every Manufacturing Industries (I have experience in textiles, chemicals and pharmaceutical, I assume other manufacturing industries are may not much different. As there are numerous problematic areas you can use your learning and skills to solve them. Very few people go for research so low competition, high learning and problem solving opportunities.
Personal life: Most important thing I learned in MBA is OPTIMIZATION, you can use this everywhere for minimizing cost, to avoid delay, for multitasking, like finding shortest route or less crowded route while travelling, inventory management of your groceries, demand forecasting and number of other things.