What are the duties of shift engineer? What do you mean by UPS also tell me the working process? What are the main components of UPS and Inverter? What is the process of HVAC system? How is it work? Tell me about the fire system? Tell me about your Power distribution in the plant? What are the types of transformer, it's working and the losses occurs? What do you mean by APFC panel how is it work? What you will do when your UPS gets shit down? How to transfer load from main supply to DG?