Hi mbaaspirant2014,
Thanks for posting. For your GMAT, top MBA programs like to see exam scores of at least a 700. If you'd like, MBA.com provides 2 free official practice GMAT exams for free.
Regarding your application, I recommend you read this case study of an Indian engineer who was accepted into a top MBA program. It should provide insight into your application:
https://www.stacyblackman.com/comprehens ... ies/case2/
This article here can also help you address your GPA:
https://www.stacyblackman.com/comprehens ... ies/case5/
Cheers,
Conrad and the Stacy Blackman Team