ITI/NCVT Welder (Fab & Fit) (AITT Theory)

ITI/NCVT Welder (Fabrication & Fitting) - All India Trade Test (Theory)

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About this exam

The ITI/NCVT Welder (Fabrication & Fitting) All India Trade Test is the theory examination taken by trainees who have completed the two-year ITI trade course in welding under the NCVT framework. It is intended for apprentices and ITI trainees who want a nationally recognised trade qualification for employment in fabrication shops, structural steelwork, pressure-vessel work, shipbuilding, railways, and general engineering maintenance. The theory paper tests trade knowledge across gas welding and cutting, manual metal arc welding, MIG/MAG and flux-cored welding, TIG welding, welding power sources and electrodes, joint preparation and fit-up, distortion and residual stress control, weld defects and inspection methods, fabrication and pipe work, plus workshop calculation, science, and employability skills. It is a knowledge test, so the strongest preparation is steady revision of trade theory alongside your practical work: learn the reasons behind each setting, electrode classification, gas pressure, and defect cause rather than memorising isolated facts. Work through drawing and weld-symbol reading regularly, practise simple calculations without a calculator if your paper requires it, and revise safety rules as a scored topic in its own right. The official NCVT/DGT notification for your session is the only reliable source for the current question count, duration, passing marks, fees, and retake rules, so confirm these on the official site before you plan your final revision schedule.

What you'll study

Common questions

About ITI/NCVT Welder (Fab & Fit) (AITT Theory) preparation

What is the format of the AITT Welder (Fab & Fit) theory paper?

It is a written objective paper with multiple-choice questions, each having one correct answer. Questions come from trade theory plus workshop calculation and science and employability skills. It is normally offered in English and Hindi, with other regional languages where available. The official NCVT/DGT notification for your session confirms the exact structure.

How many questions are there and how long is the exam?

The official body publishes the current question count and duration for each session, and these can change between sessions. Do not rely on numbers quoted by coaching centres or older batches. Check the current NCVT/DGT notification or your institute's exam notice for the authoritative figure before your exam.

What is the passing score, and can I retake the paper?

Passing marks and retake or supplementary rules are set by the official body and published in the current notification. They are not fixed forever and may vary by session. Confirm the pass criteria and the procedure for reappearing through your institute or the official NCVT/DGT website rather than assuming a figure.

How difficult is the theory paper?

Most candidates find it moderate: the questions are trade-level and rarely trick questions, but the syllabus is broad. The usual difficulty is coverage, not depth. Candidates who only revise arc welding and ignore gas cutting, symbols, defects, or calculation lose easy marks. Steady revision across all domains is more effective than deep study of one.

In what order should I study the domains?

Start with safety and drawing, since symbols and fit-up reasoning recur in later topics. Then take SMAW, because electrode classification and power-source concepts support MIG/MAG and TIG. Follow with gas processes, then joints, distortion, and defects and inspection. Finish with fabrication and pipe work, calculation and science, and employability skills, revising weak areas last.

Which topics do candidates most often get wrong?

Common weak spots are weld symbol interpretation, electrode and filler classification codes, causes and remedies of defects such as porosity, undercut, and lack of fusion, and distortion control methods. Gas cutting settings and flame types also catch people out. Calculation questions on area, volume, weight, and current settings are frequently skipped and are easy marks if practised.

Do I need to memorise IS or AWS codes for the theory exam?

You should understand the classification systems your syllabus covers, such as how electrode designations indicate strength, position, coating, and current type, rather than memorising long tables. Know what each part of a designation means and be able to read a symbol or code you have not seen before. Confirm the specific standards listed in your official syllabus.

How should I prepare in the final weeks?

Revise one domain per day and write short summaries from memory, then check them against your trade theory notes. Practise weld symbol and drawing questions daily, and do a few calculation problems without a calculator. Attempt full-length practice papers under timed conditions once your revision is complete, and review every wrong answer by topic.

Does the theory paper include questions on safety and employability skills?

Yes. Safety, health, and environment in the welding workshop is a scored part of the paper, covering gas cylinder handling, fire precautions, fume and eye protection, and electrical safety. Employability skills and industrial practices are also included. These are often treated as free marks by candidates who revise them briefly and carefully.