ISRO SAC Technician-B Recruitment 2025 Exam Pattern & Syllabus Out Now

Indian Space Research Organisation (ISRO), Space Applications Centre (SAC), Ahmedabad has released the official notification for the recruitment of Technician-B in various trades under Advertisement No. SAC:04:2025. A total of 55 vacancies have been announced. Eligible candidates can apply online through the official website www.sac.gov.in from November 2025. Check the full details below before applying online.

Indian Space Research Organisation (ISRO)

ISRO SAC Technician-B Recruitment 2025 Exam Pattern & Syllabus

ADVT No. 0425 | Short Details of Notification

WWW.GOVFORMHUB.COM

ISRO SAC Technician-B Exam Pattern 2025

The selection process will be conducted in two stages:

Written Test
Skill Test (Qualifying in nature)

Stage 1 – Written Test

Particulars	Details
Type of Exam	Objective Type (Multiple Choice Questions)
Total Questions	80
Total Marks	80
Duration	90 Minutes
Negative Marking	0.33 Marks for each wrong answer
Medium of Exam	English & Hindi

Note:

The written test will assess both theoretical and practical knowledge.
The questions will be based on the respective ITI Trade syllabus.

Stage 2 – Skill Test

Particulars	Details
Type of Test	Qualifying (Go/No-Go basis)
Marks Considered for Merit	No (Only qualifying)
Purpose	To test the practical skills of the candidate in their respective trade

📚 ISRO SAC Technician-B Syllabus 2025

The syllabus for the written test will be based on the NCVT/SCVT ITI trade syllabus relevant to the post applied.
Below are the general topics covered for each trade 👇

1. Electrical Trade

Basic Electrical Theory
Ohm’s Law, AC/DC Circuits
Electrical Machines (Transformers, Motors, Generators)
Wiring, Earthing, and Safety Measures
Measurement Instruments and Control Systems
Power Systems and Utilization of Electrical Energy

2. Mechanical Trade

Engineering Drawing and Workshop Calculation
Strength of Materials, Machine Design
Thermodynamics and Heat Engines
Welding, Fitting, and Machining Processes
Fluid Mechanics and Hydraulic Systems
Measurement Tools and Maintenance Techniques

3. Electronics Trade

Basic Electronics & Communication
Analog and Digital Circuits
Transistors, Diodes, and Logic Gates
Microprocessors and Microcontrollers
Signals and Systems
Power Electronics and Measurement Instruments

4. Computer/IT Trade

Computer Fundamentals and Hardware Basics
Operating Systems and MS Office
Internet, Networking, and Data Communication
Programming Basics (C, C++, Python)
Database and Software Fundamentals
Cyber Security Awareness

5. Fitter/Other Trades

Tools, Materials, and Workshop Practices
Fitting Operations, Drilling, Tapping, Grinding
Basic Engineering Drawing
Measurement Instruments (Vernier, Micrometer)
Machine Maintenance and Safety Rules

Important Links:

Apply Online	Click Here
Join GovFormhub Channel	Telegram \| WhatsApp
Official Notification PDF	Download PDF
Official Website	CLICK HERE

🧠 7-Day Preparation Plan for ISRO Technician-B Exam 2025

🔸 Day 1:
Revise basic trade theory from your ITI syllabus and focus on core principles.

🔸 Day 2:
Practice numerical and conceptual questions related to your trade (Electric current, machines, circuits, etc.).

🔸 Day 3:
Revise general workshop practices, safety rules, and tools operations.

🔸 Day 4:
Focus on applied practical questions and real-life trade applications.

🔸 Day 5:
Solve at least 2 mock tests and analyze weak areas.

🔸 Day 6:
Revise formulas, diagrams, and short notes made earlier.

🔸 Day 7:
Take one final full-length test and relax; review key concepts only.

❓ ISRO SAC Technician-B Recruitment 2025 – FAQs

Q1. What is the selection process for ISRO SAC Technician-B 2025?
👉 Selection will be based on a Written Test followed by a Skill Test (Qualifying).

Q2. Is there any negative marking in the ISRO Technician-B exam?
👉 Yes, 0.33 marks will be deducted for each wrong answer.

Q3. How many questions are there in the written exam?
👉 There will be 80 questions carrying 1 mark each.

Q4. What is the duration of the written exam?
👉 The exam duration is 90 minutes.

Q5. What is the syllabus for ISRO Technician-B exam?
👉 The syllabus is based on the ITI Trade syllabus relevant to the candidate’s discipline.

Q6. How is the Skill Test conducted?
👉 The Skill Test is conducted on a Go/No-Go basis, and marks are not added to the final merit.

Q7. What are the best books for ISRO Technician-B preparation?
👉 Use your NCVT/SCVT trade textbooks, previous year ISRO Technician papers, and mock tests for practice.