The answer is historial. In the times of the Industrial Revolution everyone in the UK and most of Europe came up with inventions (some of them which we see in modified forms today). Therefore the word “Engineer” became commonplace. read more
To put it in another way, Mechanical Engineering is a branch of engineering which deals with the study of machines & their mechanics. And as far as machines are considered, Aamir Khan gave the best definition of ‘Machine’ in the movie 3 Idiots. read more
This branch of mechanical engineering mainly utilizes the principles of thermodynamics and uses equipment like alternators, boilers etc. Marine Engineering This branch of mechanical engineering relates to the operation and maintenance of propulsion and other machines on board ships. read more