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Course Name: ELECTRICIAN TRADE
Objective: To impart the trainees the necessary skills in order to capture the growing rural markets for electrical and electronic products and help the rural masses with necessary support services in this area, at a sustainable returns to the learners.
Duration: 3 Months
Course In-charge: Mr. M. Venkateswarlu
Module – I:
Introduction: Conductors, resisters and insulators, materials there of copper and aluminum conductors stranded conductors, current capacity, measurement of wires sizes, gauge. To study D.C. and A.C. supplies on CRO and study amplitude and frequency relation between voltage, current and resisters in D.C. Circuits impedance measurement in A.C., R.L.C. circuit. To measure power drawn and power factor of R.L.C. circuit. Power and energy drawn by Series and parallel circuits. Effects of electric current, Electromagnet, Inductors, Capacitors, Series Parallel connections. Study and use of voltmeter, ammeter, wattmeter, energy meter, tong-tester, multimeter, megger, earth resistance meter, familiarization of sub-station.
Module - II:
Practicable methods of producing light by electricity. Arc lamps and their uses.
Filament Lamps: Carbon and tungsten, coiled coil, gas filled lamps, effect of variation of voltage on tungsten filament lamps.
Discharge lamps: Sodium vapour, mercury vapour lamps and metal halide lamps, ultra violet lamps, cold cathode neon lamps, fluorescent lamps, compact fluorescent lamps (CFLS).
Module - III:
Immersion heaters without control and geysers with control-Thermostat, Instant-Water Heaters, Electric-Iron, Electric Range, temperature control, Cook top and Oven.
Table fans, ceiling fans, regulators, R.L. and electronic. Air coolers, speed control, Exhaust Fans.
Refrigerators - Electric circuit and main components. Water coolers.
Air-Conditioners – Types Window, Electric circuit and main components. Split-Air, Electric circuit and main components.
Module – V:
Mono-block pumps, jet-pumps and submersible pumps and their uses.
Single phase motors for water pumps, single-phase motor starters with over current and no-volt protection.
Three Phase motors speed and slip, three Phase motor starters, DOL, Star-delta starters, manual, semi-automatic, over-current and under voltage protection.
Module – VI:
Mixing machines – speed control, washing machines.
VII: Lead Acid Battery
Construction, charge and discharge process and specific gravity of electrolyte. Connection and operation of Battery charger unit from A.C. Mains.
Module – VIII:
Safety in the use of appliances
Earthing of Appliances and know your electricity bill.
Physiology of Electric shocks: - Effects of electric current through human body, respiration and blood circulation cardio pulmonary resuscitation, Kiss of life and blood circulation, Pressure of life.