UNIT II CONSERVATION 9
Economics of generation – Definitions – Load curves – Number and size of units – Cost of
electrical energy – Tariff – Need for electrical energy conservation – Methods – Energy efficient
equipment – Energy management – Energy auditing – Economics of power factor improvement
–Design for improvement of power factor using power capacitors – Power quality – Effect on
UNIT III ILLUMINATION AND ELECTROLYTIC PROCESSES 9
Nature of radiation –Solid and Plane angle and its relation – Definition – Basic Laws
Photometry– Lighting Schemes – Lighting calculations – Design of illumination systems (for
residential,industrial, commercial, health care, street lighting, sports, administrative complexes)
– Types oflamps – Energy efficiency lamps – Design of choke and capacitor – Electrolytic
Process – Basicprinciples – Electro-deposition – Extraction and refining of metals methods –
Power supply for electrolytic processes.
UNIT IV ELECTRIC TRACTION 9
Basic concepts of electric Traction – Requirements of an ideal traction system – Supply systems
–Mechanics of train movement – Traction motors and control – Multiple units – Braking –
Current collection systems – Recent trends in electric traction.
UNIT V ELECTRIC HEATING AND WELDING 9
Introduction – Methods of heating – requirement of heating material – Design of heating element
–Electric Arc Furnaces – Induction Heating – Dielectric Heating – Electric Welding –Types of
Resistance welding – Welding transformer and its characteristics – Thyristorised Control circuit
of welding – Energy storage system for welding.