This document discusses public sector undertakings (PSUs) in India, which are state-owned enterprises majority-owned by the Indian government. It provides examples of major PSUs such as Bharat Electronics Limited, National Aluminium Company Ltd, Hindustan Petroleum Corporation Limited. For most PSUs, the selection process involves passing the Graduate Aptitude Test In Engineering (GATE), followed by a group discussion and interview. Electronics and communication engineers can work in PSUs to manage control systems, communications networks, and more. Fresh graduates typically join PSUs at the Scientist A level in operational or research and development roles.