Odisha CHSE +2 Vocational EDA (Electrical Domestic Appliances) study guide
Odisha CHSE +2 Vocational EDA (Electrical Domestic Appliances) · Work through your exam, one topic at a time.
The Odisha CHSE +2 Vocational programme in Electrical Domestic Appliances (EDA) is a higher-secondary vocational stream offered under the Council of Higher Secondary Education, Odisha. It suits students who want a practical, trade-oriented qualification alongside or instead of a purely academic +2 course, and it also serves hobbyists, ITI holders and small repair-shop workers who want recognised grounding in household electrical work. The Odisha CHSE +2 Vocational EDA (Electrical Domestic Appliances) study guide has 12 sections and about 3,934 words.
01Basic Electrical Principles and Measurements
Basic Electrical Principles and Measurements tests the laws, units and instruments that underpin every domestic appliance job. Expect numerical questions on Ohm's law, power, energy and series/parallel circuits, plus instrument-connection and safety questions.
359 words, about 2 min02Electrical Materials
Electrical Materials tests why copper, aluminium, PVC, porcelain, bakelite, mica, nichrome and silicon steel are chosen for particular parts. Questions often ask property-to-application matching and simple resistance calculations.
343 words, about 2 min03Wiring Accessories and Safety
Wiring Accessories and Safety tests the identification, rating and correct connection of switches, sockets, plugs, holders, ceiling roses, distribution boards and protective devices, plus the safety rules that govern domestic work. A switch must be connected in the phase conductor so that the holder or appliance is dead when switched off.
354 words, about 2 min04Domestic Wiring Systems
Domestic Wiring Systems tests the wiring methods used in houses, how circuits are divided, and how conductor sizes and sub-circuits are selected. Expect comparison and load-estimation questions.
329 words, about 2 min05Circuits and Protection
Circuits and Protection tests how a circuit is completed and protected against overload, short circuit and earth leakage, and how protective devices are selected. A basic circuit needs a source, conductors, a load, a switch and a protective device.
326 words, about 2 min06Heating Appliances: Construction, Working and Servicing
Heating Appliances: Construction, Working and Servicing tests the heating element, insulation, thermostat and safety cut-outs in irons, kettles, geysers, room heaters, ovens and induction cooktops, and the servicing checks. Joule heating: heat produced is I²Rt.
338 words, about 2 min07Motor-Driven Appliances: Fans, Mixers, Grinders and Washing Machines
This domain tests single-phase motor starting, speed control and the mechanical and electrical faults in common appliances. A single-phase induction motor is not self-starting.
340 words, about 2 min08Refrigeration and Air Conditioning Appliances
Refrigeration and Air Conditioning Appliances tests the vapour-compression cycle, refrigerant handling and the servicing of refrigerators and room air conditioners. Vapour-compression cycle: the compressor raises pressure and temperature; the condenser rejects heat; the expansion valve or capillary drops pressure; the evaporator absorbs heat.
311 words, about 2 min09Lighting, Fans and Small Domestic Electrical Fittings
Lighting, Fans and Small Domestic Electrical Fittings tests lamp types, lighting quantities, fan selection and small fittings such as doorbells, buzzers and indicators. Lamp terms: luminous flux (lumens), illuminance (lux = lumens/m²), efficacy (lm/W), colour temperature (CCT, K) and colour rendering index (CRI).
324 words, about 2 min10Fault Diagnosis, Testing and Repair Practice
Fault Diagnosis, Testing and Repair Practice tests a safe, logical method for finding open circuits, short circuits, earth faults and loose connections, and for proving a repair. Safe isolation: inform the user, switch off, isolate, lock off, prove the voltage tester on a known source, test the circuit, then work.
318 words, about 2 min11Entrepreneurship, Estimation and Consumer Service
Entrepreneurship, Estimation and Consumer Service tests the business side of an electrical contractor: costing, quotation, estimation, documentation, warranty and consumer rights. Costing includes materials, labour, transport, tools, overheads and profit.
300 words, about 2 min12Practical Workshop and Internal Assessment
Practical Workshop and Internal Assessment tests workshop safety, tool use, measurement, wiring practice and the records and viva that make up internal assessment. PPE: safety shoes, insulated gloves and goggles; use insulated tools; keep the bench dry; know the main switch and first-aid box.
292 words, about 1 min