It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation of machines and tools. Career opportunities after doing Mechanical engineering is vast. You are eligible for applying to the following posts in Railways sector :- Section Engineer, Assistant Engineer, Station Master, Ticket Collector, Loco Pilot etc. You are also eligible for applying to the following posts in Govt. sectors like BEML / ONGC / ISRO / BSNL etc :- Design Engineer, Junior Engineer, Assistant Engineer.