Dear aspirant,

Branches in MBA and not like date off BTech. In MBA 1st year is same for all the branches and in second year you have choice ranging from finance to marketing to operations to HR. Candidates with work experience and their interest and where they want to go in their career choose any of these branches and if they are not sure about what do you want to do post your MBA they do a general MBA. However if you want any specific answer then finance is a good choice as it deals largely with numbers and calculations and engineers are presumed to have good mathematics background and therefore they tend to choose finance.

Hope this helps. Thank you.