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Electric Drives:
Advantages of electric drives, Characteristics of different mechanical loads,
Types of motors used in electric drive,
Electric braking, Plugging, Rheostat braking, Regenerative braking, Methods of
power transfer by direct coupling by using devices like belt drive, gears,
pulley drives etc.
Examples of selection of motors for different types of domestic loads,
Selection of drive for applications such as general workshop, textile mill,
paper mill, steel mill, printing press, crane, lift etc. Application of
flywheel.
Specifications of commonly used motors e.g. squirrel cage, slip ring
induction motors, AC series motors, FKW motor.
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Electric Heating:
Advantages of electrical heating, Heating methods, Resistance
heating – direct and indirect resistance heating, electric ovens, their
temperature range, properties of resistance heating elements, domestic
water heaters and other heating appliances and thermostat control circuit. Induction heating; principle of core type and coreless induction
furnace Electric arc heating, direct and indirect arc heating,
construction, working and applications of arc furnace. Dielectric heating, applications in various industrial fields Infra-red heating and its applications ,Microwave heating, Simple design problems of resistance heating element
Electric Welding:
Advantages of electric welding ,Welding methods, Principles of resistance welding, types – spot,
projection seam and butt, welding and welding equipment used , Principle of arc production, electric arc welding,
characteristics of arc, carbon arc, metal arc, hydrogen arc welding and
their applications
Power supply required, Advantages of using coated electrodes, comparison between AC and
DC arc welding, welding control circuits, welding of aluminum and copper,
Introduction to TIG, MIG welding.
Electric Traction:
Electric traction, Advantages of electric traction, Different systems of electric traction, DC and AC systems, diesel
electric system, types of services – urban, sub-urban, and main lines and
their speed-time curves, Different accessories for track electrification such as overhead
capacitor wire, conductor rail system, current collector-pantograph, Factors affecting scheduled speed, Electrical block diagram of an electric locomotive with
description of various equipment and accessories, Types of motors used for
electric traction, Starting and braking of traction motors , Introduction to EMU and metro railways
Note: Refer Last 5 GTU papers of 8th/6th
semester EPUT/UET
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