Canada

University of Prince Edward Island, University of Toronto, York University, Dalhousie University, University of the Fraser Valley are all very popular among Indian applicants. The average first year fee will be around 10-15 lakhs, although top universities may charge higher fee.

Yes, but it depends on which courses you apply to. Some courses have lower academic requirements and the most in-demand courses have tougher entry requirements. Please mention which courses are you interested in applying for.

You have to sit for USMLE

Hello,
Very few universities offer Automation Engineering in Canada. You can look for other country options such as USA. Concordia University and the University of Western Ontario's M.Eng course do offer automation or control engineering track.
Regards

For MBA, 55% is a low score. So we can't give a generic answer as you will have to request the colleges to consider your application as a special case. If the college is impressed by your overall profile and achievements, you might get admission.

Your 10th and 12th marks, Under graduation GPA (if applicable), IELTS or TOEFL scores
Course based scores -
GMAT scores if you are applying to MBA
GRE scores if you are applying for MS course.

There is no "success rate" of Canadian visas as they are given on case to case basis. There are two categories of Visas to Indian students - general ans SPP visas. Under SPP, it is easier to get the visa. However for that you need confirmed admission to a Canadian SPP institute.
And you need to improve your IELTS scores, with at least 6.5 overall score minimum.