It has been observed universally that the students tend to get bored if they feel obligated rather than excited to learn something. Many instructors have noticed students whispering to one another, tapping their feet, fidgeting in their chairs and most of all, making hidden attempts to sneak a peek at their devices. Within a few short minutes of class, their concentration and focus are overrun by disengagement. There are a lot of research that support these observations.

ISO/ASTM 52900 defines additive manufacturing as the process of joining materials to make parts from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing and formative manufacturing methodologies. Additive manufacturing is also considered as a natural process like plant growth. It is now used in industries to manufacture engineering components.

To ace competitive examinations, it is essential to have a smart strategy coupled with apt and updated study material. For a holistic view it is essential for aspirants to keep a tab on latest exam notifications, syllabus and include previous year's papers in their preparation strategy. The sheer quantity of learning required makes it important for aspirants to maintain a fixed routine and follow it. Selecting the best books and thorough revision of subjects is indispensable for successful preparation.