Unit 2
Electric Drives – Selection of motors in various applications; Electric drive systems in various industries; speed control of motors, variable speed drives, Specifications of commonly used motors. Energy efficient drives.
Space conditioning systems – Heating, Ventilation, and Air Conditioning (HVAC) systems: Principle of air conditioning, vapour pressure, refrigeration cycle, ecofriendly refrigerants; Electrical Circuits used in Refrigeration and Air Conditioning and Water Coolers;
Electrochemical Processes – Electrolysis. Electroplating. Electrodeposition. Extraction of metals.
Unit 3
Electric Heating – Comparison with other heating methods; Resistance heating, Induction heating, Arc furnace, Dielectric heating; Electric welding – types, equipment and modern techniques.
Electric Traction – Traction systems; Speed-time curves and mechanics of train movement; Traction motors; Control of motors; Electric braking methods; Regeneration. Electric Vehicles – Types of electric vehicles and hybrid vehicles; motors and batteries for EV; Drive systems for electric traction.
