Hello  Soumya 

For Getting Admissions in MBA in Good University you need to have 

• Completed BBA or BCA with average percentage 50 % 
• Entrance exams should be cleared with some recognized rank or in accordance to the Cutoff 

These are some Entrance exams 

• CAT - Common Admissions Test 
• GMAT
• XAT

List of some Top Universities 

• IIM, Bangalore 
• IIM, Kolkata 
• DMS IIT, Delhi 
• IIT, Kharagpur
• Amity University, Noida
• etc.

Remember for admissions in these universities You Need to Qualify for Entrance exam  with recognized rank

More information refer to this link

http://campusutra.com/ContentEvent.aspx?id=3230&name=Top-MBA-College-in-Operations-Management-in-India,-Best-PGDM-Institute-in-operations-management&utm_medium=Campusutra&utm_source=QUORA

Hope this May Help you 

REGARDS by Career360 

Hi Soumya,

First of all, work experience is very valuable when you apply for an MBA irrespective of the course you pursue. 

Now, lets provide you with the list of the best colleges for Operations Management:

• The Old Classic IIMs such as IIM Ahmedabad, Calcutta, Bangalore, Lucknow: CAT exam
• XLRI Jamshedpur: XAT
• NITIE, Mumbai: CAT
• Narsee Monjee Institute of Management Studies, Mumbai: NMAT
• JBIMS Mumbai: CAT, Maharashtra CET
• SIOM, Nashik : SNAP(Easier to get in compared to others)
• TAPMI Manipal: CAT
• ISB, Hyderabad: CAT, Bocconi Test.

Hope it helps.

All the best!