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SYLLABUS

UNIT-I

ILlUMINATION Definition – Laws of Illumination – Polar Curves – Calculation of MHCP and MSCP. Lamps: Incandescent lamp, Sodium vapour lamp, Fluorescent lamp, CFL and LED. Requirement of good lighting scheme – Types, Design and calculation of illumination. Street lighting and factory lighting – Numerical problems – Energy conservation methods.

UNIT-II

Electric Heating & Welding Electrical Heating: Advantages. Methods of electric heating – Resistance, Arc, Induction and dielectric heating – Energy conservation methods. Electric Welding: Types – Resistance, Electric arc, Gas welding, Ultrasonic, Welding electrodes of various metals, Defects in welding. Electrolysis – Faraday’s laws, Applications of electrolysis, Power supply for electrolysis.

UNIT-III

Electric Traction-I Introduction – Systems of electric traction. Comparison between A.C and D.C traction – Special features of traction motors – The locomotive – Wheel arrangement and riding qualities – Transmission of drive – Characteristics and control of locomotives and motor coaches for track electrification – D.C equipment – A.C equipment – Electric braking with D.C motors and with A.C motors – Control gear – Auxiliary equipment – Track equipment and collector gear – Conductor-Rail equipment – Overhead equipment – Calculation of sags and tensions – Collector gear for overhead equipment.

UNIT-IV

Electric Traction-II Mechanics of train movement. Speed-Time curves of different services – Trapezoidal and quadrilateral, SpeedTime curves – Numerical problems. Calculations of tractive effort, Power, Specific energy consumption - Effect of varying acceleration and braking retardation, Adhesive weight and coefficient of adhesion – Problems.

UNIT-V

economic aspects of UtiLising Electrical Energy Power factor improvement, Load factor improvement, Off peak loads – Use of exhaust steam, Waste heat recovery, Pit head generation, Diesel plant, General comparison of private plant and public supply – Initial cost and efficiency, Capitalization of losses, Choice of voltage.