You want to know about the use of MBA after B.E. so here I want to suggest that MBA after B.E is good decision and it will more benifial that if you do MBA from top colleges of India such that IIMS and NITS colleges .

For take admission in top colleges of India so should start you preparation for entrance exam such that

CAT
MAT
GMAT
Because if you get best rank in the entrance exam then their increasing the probability to select in the best colleges of India and out of India
After doing MBA in good college you can approach to good package of salary which has expectation.

If you have MBA degree the after working in the technical field you can easily move to management filed.