Polytechnic Diploma is basically a job oriented course that provides the base for the subject you are interested in. Polytechnic Diploma courses are usually of short duration (2 year or 3 year) and are more practical-oriented. It is well known that “Engineers are made in the industry and not in the classrooms,” so is theimportance of a Polytechnic Diploma.
In recent years, many companies have been asking for candidates who hold a Polytechnic Diploma. This is mainly because these candidates already know the basics of engineering and will be directly able to contribute to the company.
Polytechnic Diploma holders have been known to get a good salary right from their first job. If you have heard from your seniors or from companies themselves.

Although you may have heard of many people who have done a Polytechnic Diploma after their 10th or Plus two, this is the best time to do a Polytechnic Diploma after a degree. This is mainly because you already have a BE or B. Tech. degree and no one would ask for your 10th or 12th qualification. You will also be able to climb up the ladder really fast. This is because with your experience in the industry and with your Polytechnic Diploma, you can easily be considered for a higher post.

Scope:

Polytechnic Diploma is a technical degree that can get you a good job on its own. However, in order to win more diverse career opportunities and be eligible for high-level jobs, graduation or further studies is a must. Moreover, during your Polytechnic Diploma, you are only introduced to foundational aspects of your respective study domain along with practical training.

Public Sector/ Private Sector:
• Railways
• Indian Army
• GAIL – Gas Authority of India Limited
• ONGC – Oil & Natural Gas Corporation
• DRDO – Defence Research and Development Organization
• BHEL – Bharat Heavy Electricals Limited
• NTPC – National Thermal Power Corporation
• Airlines – Indigo, Spice jet, Jet Airways, etc.
• Construction Firms – Unitech, DLF, Jay Pee Associate etc.