ISRO Draughtsman Exam Pattern, Eligibility, Important Dates
114 topics across 4 subjects. Every question carries a written explanation.
Draughtsman 'B' is a Level 3 post at ISRO (₹21,700 basic) for candidates with an ITI in a draughtsman trade. ISRO centres recruit for it individually, and only a post or two at a time.
The 2026 calls were small. ISTRAC, Bengaluru advertised one Draughtsman (Civil) and one Draughtsman (Mechanical) under Advt. ISTRAC:02:2026, and held its computer based test on 25 September 2026. LPSC advertised one Draughtsman (Mechanical) at Valiamala, near Thiruvananthapuram, under Advt. LPSC/02/2026; applications closed on 4 September 2026.
Last checked against the official notification on .
ISRO Draughtsman Details
Exam Pattern
A written test or CBT of 80 multiple choice questions in 90 minutes, with minus 0.33 for each wrong answer. The pass mark is 32 out of 80, or 24 for a reserved post. Next comes a skill test for 100 marks that you must pass with 50 (40 for a reserved post), though the score isn't used for ranking.
The syllabus for both is the ITI draughtsman curriculum of your trade.
Eligibility Criteria
- SSLC/SSC pass.
- ITI with NTC or NAC from NCVT in the Draughtsman (Civil) or Draughtsman (Mechanical) trade, matching the post.
- Age 18 to 35 on the last date for applications. SC, ST and OBC relaxations (5, 5 and 3 years) only against posts reserved for them; other relaxations as per Government orders.
Selection Process
Five candidates per post, at least ten, go from the written test to the skill test. Among those who pass, the written test marks decide the order. ITI marks break ties, and at ISTRAC a candidate with an NAC is preferred if the tie remains.
Salary
Level 3 (₹21,700 to ₹69,100) plus DA and allowances, NPS or UPS pension, and the usual Central Government benefits.
How to Apply
Online through the centre's link on the ISRO Careers page. Fee ₹500, of which ₹400 is refunded if you take the written test; women, SC, ST, PwBD and ex-servicemen get the full ₹500 back.
Participating Institutes
| Centre | Trade | Posts | Category |
|---|---|---|---|
| ISTRAC, Bengaluru | Draughtsman (Civil) | 1 | OBC, backlog post for PwBD (OH) |
| ISTRAC, Bengaluru | Draughtsman (Mechanical) | 1 | OBC |
| LPSC, Valiamala | Draughtsman (Mechanical) | 1 | UR |
LPSC describes the job as preparing drawings, fluid schematics, sketches and bills of materials to the prescribed drawing standards.
Exam Centres
LPSC holds both tests in Thiruvananthapuram. ISTRAC's CBT can be in Bengaluru or other cities, with the skill test in Bengaluru.
Important Dates
ISTRAC: applications 27 June to 20 July 2026, CBT on 25 September 2026, answer key objections until 4 October. LPSC: applications 18 August to 4 September 2026, written test date not announced by 16 October 2026.
No centre advertises Draughtsman posts on a fixed schedule.
Official Links
Frequently Asked Questions
Who recruits ISRO Draughtsman B?
Individual ISRO centres. In 2026, ISTRAC and LPSC.
How many posts were advertised in 2026?
Three in all: two at ISTRAC and one at LPSC.
What qualification do I need?
Class 10 and an ITI in the Draughtsman (Civil) or (Mechanical) trade from NCVT.
What is the salary?
₹21,700 basic at Level 3, plus allowances.
Engineering Mathematics (8)
- Matrices and Determinants
- Differential Calculus
- Integral Calculus
- Multiple Integrals
- Vector Calculus
- Ordinary Differential Equations
- Partial Differential Equations
- Complex Variables
General Awareness / General Knowledge (GK) (23)
- Indian Politics
- Indian History
- Indian Economy
- Important Acts of the Parliament of India
- Honours and Awards
- Indian Geography
- Indian Culture
- World Geography
- Famous Places in India
- Famous Personalities
- Books and Authors
- Sports
- Days and Years
- Inventions
- Highest, Longest, Biggest, Largest, Deepest, Smallest of the World
- General Science
- World Currency
- Country Languages
- Technology
- Physics
- Chemistry
- Biology
- Scientific Names of Plants and Animals
Quantitative Aptitude (49)
- Number System
- H.C.F. & L.C.M.
- Decimal Fractions
- Simplification
- Square Roots & Cube Roots
- Average
- Problems on Numbers
- Problems on Ages
- Surds & Indices
- Percentage
- Operations on Numbers
- Profit & Loss
- Ratio & Proportion
- Partnership
- Chain Rule
- Time & Work
- Pipes & Cistern
- Time & Distance
- Problems on Trains
- Boats & Streams
- Alligation or Mixture
- Simple Interest
- Compound Interest
- Logarithms
- Area
- Volume & Surface Areas
- Mensuration
- Races & Games of Skill
- Calendar
- Clocks
- Stocks & Shares
- Permutations & Combinations
- Probability
- True Discount
- Banker’s Discount
- Heights & Distances
- Odd Man Out & Series
- Algebra
- Divisibility Rules & Remainder Theorem
- Factorials & Power Cycles
- Progressions (A.P., G.P., H.P.)
- Work & Wages
- Set Theory / Venn Diagrams
- Geometry (Lines, Angles, Triangles, Polygons)
- Coordinate Geometry
- Data Interpretation
- Trigonometry
- Statistics (Mean, Median, Mode)
- Arithmetic Operations
Reasoning (34)
- Analogy
- Number Series
- Classification
- Series Completion
- Coding-Decoding
- Input Output
- Inequality
- Blood Relation
- Puzzle Test
- Sequential Output Tracing
- Direction Sense Test
- Linear Seating Arrangement
- Circular Seating Arrangement
- Alphabet Test
- Number, Ranking and Time Sequence Test
- Mathematical Operations
- Logical Sequence of Words
- Arithmetical Reasoning
- Inserting The Missing Character
- Data Sufficiency
- Decision Making
- Assertion and Reason
- Situation Reaction Test
- Verification of Truth of the Statement
- Letter and Symbol Series
- Logic
- Statement - Arguments
- Statement - Assumptions
- Statement - Courses of Action
- Syllogisms
- Statement - Conclusions
- Deriving Conclusions From Passages
- Theme Detection
- Question - Statements
Exam Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development