7EE4 UTILIZATION OF ELECTRICAL POWER

Unit-1

(i)Electric Heating:

Different methods of electric heating. Principle of high frequency

induction and di-electric heating. Construction, operation, performance and applications of arc

furnace and induction furnace.

(ii) Electric Welding:

Welding process, welding transformer,

Classification of Electric Welding:  arc welding, resistance welding, welding of various

metals.

Unit-2

Illuminations:

Definitions, laws of illuminations, polar curves, luminous efficiency,

photometer, incandescent lamps: filament materials, halogen lamp. electric discharge lamps:

sodium vapour lamp mercury vapour lamp and fluorescent lamp.

Light Calculations:

commercial, industrial, street and flood lighting.

Unit-3

Electrolytic Process:

Principles and applications of electrolysis, electro-deposition,

manufactures of chemicals, anodizing, electro polishing electro-cleaning, electroextraction,

electrorefinig, electro-stripping (parting) power supplies for electrolytic process.

Unit-4

Electric Traction & Means of Supplying Power:

Systems of Electric Traction: DC & AC

Systems, Power Supply for Electric Traction System: Comparison and application of different

systems. Sub-station equipment and layout, conductor rail & pantograph.

Unit-5

Traction Methods:

Types of services, speed time and speed distance curves, estimation of

power and energy requirements, Mechanics of train movement. Co-efficient of adhesion,

Adhesive weight, effective weight.

Traction Motor Controls:

DC and AC traction motors,

Series parallel starting.  Methods of electric braking of traction motors.