Sri Lanka NVQ Level 3 Welder Written Examination study guide
Sri Lanka NVQ Level 3 Welder Written Examination · Work through your exam, one topic at a time.
The Sri Lanka NVQ Level 3 Welder qualification is a National Vocational Qualification awarded under the TVEC framework, recognising that a welder can carry out routine fabrication and repair work to a supervised trade standard. The written paper tests the theory that sits behind competent hand skills, so it suits candidates who already work in workshops, training centres or fabrication yards and want their competence formally certified, as well as apprentices preparing for trade assessment. The Sri Lanka NVQ Level 3 Welder Written Examination study guide has 13 sections and about 3,598 words.
01Occupational Safety, Health and Environment in Welding
This domain tests hazard recognition and control in welding: arc radiation, fume, fire, electric shock, gas cylinders and confined spaces. Questions often ask for the best control, not the quickest one.
311 words, about 2 min02Engineering Drawings, Symbols and Welding Terminology
This domain checks whether you can read an engineering drawing and extract dimensions, views, tolerances and welding information without guessing. The exam favours interpretation of line types, projection method and limits.
308 words, about 2 min03Welding Symbols and Terminology
Welding symbol questions test whether you can transfer a drawing instruction into a real weld: side, size, length, pitch, process and finish. You must know the reference line, arrow, tail and basic weld symbol.
323 words, about 2 min04Materials
This domain tests basic weldability of carbon steel, stainless steel and aluminium, including carbon equivalent, preheat and contamination control. The exam expects you to link material composition to cracking risk.
282 words, about 1 min05Materials, Metal Preparation and Weldability
This domain focuses on what happens before the arc starts: cleaning, edge preparation, fit-up and contamination control. Poor preparation causes porosity, lack of fusion and cracking that no welding skill can repair.
309 words, about 2 min06Welding Processes and Equipment
This domain tests process selection and safe equipment use: SMAW, MIG/MAG, TIG, FCAW and oxy-fuel welding. You should know polarity, shielding, duty cycle and typical applications.
265 words, about 1 min07Consumables
Consumables questions test electrode and filler classification, storage, shielding gas and deposition. You must match the consumable to the base metal, process and WPS.
250 words, about 1 min08Welding Parameters and Procedure Selection
This domain tests how current, voltage, travel speed and heat input interact, and how a WPS controls them. Exam questions often ask which variable to change or how to calculate heat input.
264 words, about 1 min09Joint Design, Fabrication and Fit-Up
This domain tests joint types, groove preparation, fit-up and fabrication sequence. A good weld cannot compensate for a badly fitted joint.
255 words, about 1 min10Weld Inspection, Defects and Quality Control
This domain tests visual and non-destructive inspection, defect identification and acceptance decisions. You must know what each method can and cannot find.
249 words, about 1 min11Distortion Control
This domain tests why welded assemblies move and how to control longitudinal, transverse, angular and bowing distortion. The exam expects practical sequence controls, not just “weld slower”.
250 words, about 1 min12Heat Treatment and Post-Weld Operations
This domain tests preheat, post-weld heat treatment and post-weld cleaning. You must know why heat treatment is done and what can go wrong.
273 words, about 1 min13Workshop Practice, Calculation and Documentation
This domain tests workshop organisation, measurement, simple calculations and traceability. The exam expects correct units, clear job records and practical checking before work starts.
259 words, about 1 min