Hello Jamshed ,
I am afraid, that diploma in Mechatronics does not make you competent for high end job market, such as robotics. Being said that, it does not mean that you will be completely ineligible for job offered by mechatronics. If you want to get a engineering job in electronics or mechanical, in Kanpur, please follow main stream courses. You can apply for the jobs in Kanpur, after the diploma, but its up to the employer whether they have to choose a diploma holder for the job among mechanical/electronics engineers. What I would suggest you that, go for B-Tech in Mechatronics if you like the subject and prepare yourself for a career anywhere in the world. Otherwise, choose Mechanical or Electronics courses and find job in Kanpur.
Best wishes
Rupesh