Dear Dharmendra
Hope, it helps.

Mechanical Engineering is one of the oldest and broadest engineering branches and hence, one of the most preferred one by the engineering aspirants. The branch applies the principles of engineering, physics and material science for the design, analysis, manufacturing and maintenance of mechanical systems. This branch of engineering involves design, production, and operation of machinery.

Mechanical Engineering includes design, manufacture, installation and operation of engines, machines, robotics, heating & cooling systems and manufacturing processes. In this profession, you will be responsible for designing and developing machines right from bicycles to supersonic fighter jets and toasters which can be extremely challenging and fulfilling, requiring analytical skills together with an ability to work in a team. You must love machines and be comfortable working with tools!
All the best.