Hi Candidate,

In simple language, if we talk about a Mechanical Engineer he is someone who is related with Machines and it's functions. They deal mostly with the laws of Physics, Electromagnetism, Field Potentials etc. to make a device functional.

Talking about the nature of jobs, Mechanical engineerings design electric generators, internal combustion engines, and steam and gas turbines, other machines inside buildings, such as elevators and escalators etc.

Hope that this answer helps you.