Hello there. Hope you are doing good. I would like to tell you it doesn't matter whether the candidate is a boy or girl. Admission is given based on the fulfillment of the admission criteria and the marks obtained. You have not mentioned the institute/college you are aiming for to get a diploma in mechanical. Fees varies from college to college and so does the placement. I suggest you to mention specific information so that I can assist you better in terms of the placement offered by the institute and the fees of the institute.

I hope you found this answer helpful. Good luck for your future.