Chapter 1: How the AITT Is Built and How to Use This Book
Most trainees lose marks in the AITT not because the trade is hard but because they never studied the shape of the examination. This chapter explains how the Craftsman Training Scheme is organised, which five subjects are examined and how they differ, how a multiple-choice trade theory paper is actually written, and how to convert your printed syllabus into a revision plan. It then gives you a formula-sheet method with a unit-conversion table, a drawing-practice method built on Indian Standard conventions, and a 45-day schedule designed for someone who also works during the day. One rule runs through the whole chapter: paper length, marks, deductions and pass criteria are notice-controlled, so you read them from your own examination notification and instruction screen and never from rumour. Read this chapter once now and again in your last week; every chapter after it assumes you know these rules.
KarmSakha preparation topics covered
- The Craftsman Training Scheme (CTS): what it is, who runs it, and where the AITT sits inside it
- NCVT and SCVT affiliation, the National Trade Certificate, and the role of DGT, NCVET and NIMI
- How CTS relates to apprenticeship (NAC) and instructor training (CITS), and why the four certificates are confused in MCQs
- The five examinable subjects: Trade Theory, Trade Practical, Workshop Calculation & Science, Engineering Drawing, Employability Skills
- What is common across trades and what is trade-specific
- How the MCQ trade theory paper is constructed: question families, distractor design, computer-based test mechanics and bilingual papers
- Marking and negative-marking conventions as notice-controlled information, and the arithmetic of guessing
- How to read a CTS trade syllabus: Learning Outcomes, Professional Skill, Professional Knowledge, core-skills hours and indicative hours
- Building a working formula sheet with unit discipline, pre-rearranged formulae and the metric conversion set
- Using Engineering Drawing practice to score marks: line conventions, first-angle placement, dimensioning, sectioning and sheet layout
- A realistic 45-day preparation plan for a trainee who is also working, and how to compress it
1.1 The Craftsman Training Scheme and where the AITT sits
The Craftsman Training Scheme, written everywhere as CTS, is India's oldest and largest vocational training programme. It has run since 1950 and is administered by the Directorate General of Training (DGT) under the Ministry of Skill Development and Entrepreneurship. The training itself is delivered by Industrial Training Institutes (ITIs), both government and privately run. You are admitted into a named trade — Electrician, Fitter, Welder, Turner, Mechanic Motor Vehicle, Stenographer, COPA and so on — and you follow a printed national syllabus written for that trade. Trade durations vary: one-year and two-year trades are the common patterns and some trades are shorter. The duration, the entry qualification and the NSQF level for your own trade are printed on the cover of your syllabus, and that cover is the authority for them, not hearsay in the workshop.
At the end of the training period you sit the All India Trade Test, usually shortened to AITT. The AITT is a summative examination: it is the one that decides your certificate. Everything done inside the institute during the year — internal tests, job work, attendance, assignments — is formative. Formative work builds the skill, but it does not replace the AITT, and a trainee who is strong on the shop floor can still fail the paper by never learning the theory vocabulary.
Trades are affiliated either to the National Council for Vocational Training (NCVT) or to a State Council for Vocational Training (SCVT). NCVT affiliation leads to the National Trade Certificate (NTC), which is recognised across India and is the qualification named in a great many PSU, railway, defence and state recruitment notices. SCVT affiliation leads to a state-level certificate. Since 2018 the regulator for vocational qualifications has been the National Council for Vocational Education and Training (NCVET), but the certificate awarded on passing a nationally affiliated CTS trade is still the National Trade Certificate. Which certificate any particular recruitment will accept is stated in that recruitment's own notice, so check the notice rather than assuming.
One more body matters to you directly. The National Instructional Media Institute (NIMI), Chennai, is an autonomous body under DGT that prepares the instructional media used in ITI classrooms and supports question-bank work for CTS trades. The practical consequence is that the trade theory paper is written in the same vocabulary as your workshop manual. A question will use the workshop term, not the colloquial term: it will say 'tang' and not 'the pointed end', 'kerf' and not 'the cut gap', 'pinning' and not 'the file getting blocked'. Learn the words exactly as they are printed, because in a four-option question the term itself is often the whole answer.
It also helps to know what sits on either side of CTS, because examiners like to test the boundary. Apprenticeship training is a separate route governed by the Apprentices Act, 1961; it is served in industry and leads to the National Apprenticeship Certificate (NAC), not the NTC. Instructor training is a third route: the Craft Instructor Training Scheme (CITS) trains people to teach in ITIs and leads to a craft instructor certificate. A polytechnic diploma is a different qualification stream altogether. NTC, NAC, CITS certificate and diploma are four distinct things, and confusing them is one of the easiest marks in the paper to lose.
| Point of difference | NCVT-affiliated trade | SCVT-affiliated trade |
|---|---|---|
| Standard-setting body | National Council for Vocational Training, the national-level body serviced through DGT | State Council for Vocational Training of that state |
| Certificate on passing | National Trade Certificate (NTC) | State-level trade certificate |
| Syllabus followed | National CTS syllabus for that trade | State syllabus, usually aligned to the national one |
| Typical recognition | Accepted nationally and named in many central recruitment notices | Strongest within the issuing state |
| Where to confirm acceptance | The recruitment notice you are applying under | The recruitment notice you are applying under |
1.2 The five subjects: what is common and what is trade-specific
A CTS trainee is examined under up to five headings. Two of them are written specifically for your trade, two are core subjects shared by engineering trades, and one is common to every trainee in the country. Knowing which is which changes how you allocate study time, because a common subject has a finite, highly repetitive body of material while a trade-specific subject does not.
Engineering trades — Fitter, Turner, Welder, Electrician, Machinist, Mechanic Motor Vehicle and similar — carry Workshop Calculation & Science and Engineering Drawing as core subjects alongside Trade Theory and Trade Practical. Most non-engineering trades, such as the secretarial, sewing and hospitality group, do not carry those two core subjects. Employability Skills, however, is carried by every trade, engineering or not. Look at the core-skills page of your own syllabus to confirm which of the five apply to you; that page also prints the hours allotted to each core subject, which is your first weighting signal.
Employability Skills deserves a word of its own because trainees routinely waste it. It is the same syllabus for a Welder and a Stenographer, it is short, and it is written in plain language: communication and workplace behaviour, basic IT and digital literacy, entrepreneurship and basic finance, productivity and quality concepts, occupational safety and health, and an introduction to labour welfare legislation. There is nothing here that requires practice at a machine, so it is the highest marks-per-hour subject on your list. The one caution is that the Employability Skills syllabus has been revised more than once, so study the version bound into your own syllabus copy rather than an older printed guide.
Two planning consequences follow from all this. First, if your trade carries Workshop Calculation & Science and Engineering Drawing, a large slice of what you can score comes from material that is identical for a Fitter and a Turner: the same mensuration, the same unit conversions, the same line conventions. That is the cheapest place to gain marks, and it is where weak candidates habitually give marks away. Second, Trade Practical cannot be revised the night before. It is assessed on a job produced at the centre, usually with a viva, and it rewards hand skill, measurement discipline and safe working, all of which are built over weeks, not hours.
| Subject | Usual mode of examination | Common or trade-specific | What it really tests |
|---|---|---|---|
| Trade Theory | Written, commonly multiple-choice on computer | Trade-specific | Names of parts and tools, materials, processes, sequence of operations, defects and their causes, trade safety |
| Trade Practical | Job work at the examination centre, with viva | Trade-specific | Whether you can produce the job to the given dimensions and tolerance, safely, within time |
| Workshop Calculation & Science | Written, commonly multiple-choice | Core subject, engineering trades | Arithmetic, mensuration, units, ratio and proportion, heat, basic mechanics and basic electricity applied to shop problems |
| Engineering Drawing | Sheet work and/or multiple-choice | Core subject, engineering trades | Line conventions, projection, dimensioning, symbols, sections, reading a component drawing |
| Employability Skills | Written, commonly multiple-choice | Common to all trades | Communication, basic IT, entrepreneurship, workplace behaviour, health and safety, quality and productivity, labour welfare |
1.3 How the MCQ trade theory paper is actually examined
Multiple-choice trade theory questions are not random. They come from five recognisable families, and once you can name the family you can usually see the answer faster, because each family has its own reading technique. Learn to classify the question in the first two seconds of reading it.
The three wrong options, called distractors, are built just as deliberately as the key. The commonest patterns are: a near-miss number produced by dropping one step of the calculation; the correct answer to a neighbouring topic; a statement that is true in general but does not answer the stem that was asked; and the right value carrying the wrong unit. That last pattern deserves real fear. A candidate who correctly calculates 200 rev/min and then selects '200 m/min' has done the whole question right and scored zero. In a numeric question, work out the answer before you look at the options, then match; if you read the options first, the near-miss distractor will make your correct working feel wrong.
Marking conventions are notice-controlled. The number of questions, the total time, the marks per question, whether any mark is deducted for a wrong answer, the languages the paper is offered in and the pass criteria for each subject are fixed by the examination notification for that session and repeated on the instruction screen shown before your paper begins. They are not identical for every trade and they do not stay the same forever. Never carry forward last year's assumption and never rely on what a classmate says. Spend the first minute reading the instruction screen properly; it is the only place where the rules for your paper are stated with authority, and everything in this section about pacing and guessing depends on the numbers you read there.
Learn the mechanics of the delivery system as well as the content. In a computer-based test you should know before the day how to move to the next question, how to return to a previous one, how the review or 'mark for review' flag works, how the question palette colours answered, unanswered and flagged questions, and where the countdown clock is displayed. Papers for CTS trades are frequently offered bilingually, in Hindi and English; if you use a bilingual paper and the two versions of a question read slightly differently, the technical term is your anchor, because the workshop term carries the meaning in both languages. Whether your paper offers a language choice is again something the instruction screen tells you.
Two habits protect marks in any paper format. First, use the review flag rather than sitting on a hard question: mark it, move on, and come back with the time you saved. A question you cannot start in twenty seconds will not usually yield to another two minutes of staring, but it often falls apart on a second visit. Second, decide your guessing policy from the instructions, not from nerves. If no mark is deducted for a wrong answer, then leaving any question blank is a pure loss and every blank must be filled before you submit. If a deduction does apply, work the arithmetic out once, before the exam, so that you are not attempting probability under pressure — Solved Example 4 does exactly that, for two different deduction rates.
- Direct recall — a definition, a unit, a standard value or a name. Read the stem, answer from memory, do not linger. Example shape: the unit in which a micrometer reading is expressed.
- Identification — which tool, symbol, part or material is being described. The stem is a description; the answer is a name. Watch for two tools that do the same job in different sizes.
- Cause and effect — what happens if a step is done wrongly, or why a defect appears. These reward workshop experience: think about the job you actually spoiled, not the sentence in the book.
- Small numeric — a one-step or two-step calculation with a standard formula. Compute first, match the option second, and check the unit last.
- Sequence — which operation comes first, or which step is out of order. Reconstruct the operation mentally from the raw material to the finished job; the answer usually falls out of the physical order of work.
