GMAT

Yes, you can give GMAT exam after clearing BBA from MS Ramaiah. There is no minimum or maximum academic qualification limit for taking the GMAT. The majority of GMAT takers are either under-graduate students in their final year or working professionals. However, you can take the GMAT even if you do not fall under either of these categories. An interesting thing to note here is that there might be some specific rules about the identity proof that you need to produce at your test center according to your nationality. For example, Indian GMAT takers must produce their passport as ID proof when they go for the test.

Basis your work experience you are eligible for 1year MBA or Executive MBA programme. You will get many options basis your GMAT score and work experience. You may try with Iims and IITs or any premier B schools. Based on the previous year data you are eligible and having good chance in
IIFT, Delhi
SP Jain
IIM Madras
BITs Pilani
You may also try in newly open Iims I. e. IIM Ranchi
IIM Rohtak
IIM Raipur
IIM Udaipur
IIM Kashipur, etc. All the Best!

Some good colleges accepting GMAT score are-
S. P Jain Institute of Management and Research, Indian Institute of Management (IIM), Xavier Institute of Management, Indian School of Business.

Hello Priyanka!
Yes, you can opt for MBA with any specialization provided by the institution you choose. Many of the colleges, offer aspirants to qualify their own entrance examinations. In short, you can get seat for MBA without CAT, MAT or GMAT but you have to participate in institution based entrance exam. If this answer helped you, then UPVOTE to help others.

CAT is the most acceptable test score then CMAT. XAT and GMAT are accepted by many b schools. If I have to choose one then CAT.