How to prepare for a PhD in Mechanical Engineering?

Preparing for a PhD in Mechanical Engineering might be stressful but if you start by making a roadmap, you will have a clearer path. Start by revising the core subjects like Thermodynamics, Fluid Mechanics, etc. Select a research area to work on, something that excites you. Qualify for the entrance exam by preparing for at least six months. Once you are done, you will be guided by the university.