RVUNL Technical Grade 3 Syllabus 2025: The Rajasthan Rajya Vidyut Utpadan Nigam Limited (RVUNL) has released the official syllabus and exam pattern for the upcoming Technician Grade-III Recruitment 2025. This recruitment drive is being conducted under the Rajasthan State Electricity Department, offering a total of 2163 vacancies across multiple technical posts.
Candidates who have applied or are planning to apply for the RVUNL Technician Grade 3 exam should start their preparation according to the latest syllabus released on the official website — energy.rajasthan.gov.in.
In this detailed guide, you’ll find everything you need to know about the RVUNL Technician Grade III Syllabus 2025, exam pattern, and subject-wise topics for all groups.
RVUNL Technician Grade 3 Recruitment 2025 Overview
| Particular | Details |
|---|---|
| Organization Name | Rajasthan Rajya Vidyut Utpadan Nigam Limited (RVUNL) |
| Post Name | Technician Grade-III (ITI) |
| Advertisement Number | RVUN/Rectt/2025-26/36 |
| Total Vacancies | 2163 |
| Application Start Date | 3 September 2025 |
| Last Date to Apply Online | 25 September 2025 |
| Syllabus Status | Released |
| Official Website | energy.rajasthan.gov.in |
RVUNL Technician Grade 3 Exam Pattern 2025
The RVUNL Technician Grade III Exam will be conducted online (Computer-Based Test). The paper will include objective-type questions based on trade-related subjects and general topics.
There will be no descriptive section, and questions will come from technical subjects relevant to the applicant’s trade. Each group has its own syllabus, divided into four groups based on the trade:
- Group I – Electrician / Power Electrician / Wireman
- Group II – Electronics Mechanic / Computer Operator & Programming Assistant (COPA)
- Group III – Boiler Attendant / Steam Turbine cum Auxiliary Plant Operator
- Group IV – Welder (Gas & Electric) / Fitter
Group I Syllabus – Electrician / Power Electrician / Wireman
This section is designed for candidates applying under electrical trades such as Electrician, Power Electrician, and Wireman.
Key Topics:
- Basic Electrical Knowledge: Concepts of conductors, insulators, and semiconductors.
- Types of Wires and Cables: Standard wire gauge, types of cables, and their applications.
- Ohm’s Law & Circuits: Series and parallel circuits, Kirchhoff’s laws, and analog/digital meters.
- Protective Devices: Fuses, circuit breakers, earthing systems, and safety measures.
- Batteries & Cells: Lead-acid cell faults, nickel-alkaline cells, charging and efficiency.
- Magnetism & Electromagnetism: Classification of magnets, magnetic materials, and DC generators/motors.
- AC and DC Circuits: Difference between AC and DC, RMS value, frequency, phase, and load factor.
- Alternator & Transformer: Principle, classification, parts, efficiency, EMF equation, and parallel operation.
- Motors & Starters: Single-phase motors, induction motors, starting and control devices.
- Measurement Tools: Use of megger, ammeter, voltmeter, and wiring fault location.
- Electronics Fundamentals: Conductors, semiconductors, energy levels, PN junction, diodes, and rectifiers.
- Transistors: Working principle, biasing, and applications.
- Switchgear & Protection: Types of switches, lightning arresters, earthing, and busbar systems.
- Basic Wiring Systems: Layouts as per IS-732-1963 standards.
This group mainly focuses on practical and theoretical knowledge required for electricians in power generation and distribution setups.
Group II Syllabus – Electronics Mechanic / Computer Operator & Programming Assistant (COPA)
This group covers electronic and computer-based trades and includes a mix of both hardware and software topics.
Key Topics:
- Safety and Precautions: Basic first aid, importance of grounding, and handling of tools.
- Fundamental Physics: Molecules, atoms, Bohr’s theory, Coulomb’s law, electric fields, and potential difference.
- Resistors & Circuits: Types, color coding, and usage of multimeter and Wheatstone bridge.
- Electromagnetism: Properties, artificial magnets, electromagnetic relays, and core types.
- Digital Electronics: Binary, decimal, octal, hexadecimal conversions; logic gates (NOT, AND, OR, NAND, NOR); Boolean algebra; flip-flops; and counters.
- Computer Fundamentals: Generations of computers, hardware, software, and architecture (block diagram).
- Input/Output Devices: Keyboard, mouse, printer, scanner, etc.
- Memory Devices: RAM, ROM, PROM, EPROM, hard disks, CDs, and DVDs.
- Operating Systems: DOS, UNIX, and Windows basics.
- Programming Basics: Machine, assembly, and high-level languages, compilers, interpreters, and flowcharts.
- C/C++ Language Introduction: Syntax, structure, and basic programming concepts.
- MS Office Skills: Word, Excel, and basic data handling.
- Database Concepts: DBMS, RDBMS fundamentals.
- Networking & Internet: LAN, WAN, MAN, Email, TCP/IP, FTP, and website basics.
- Semiconductor Theory: P-type and N-type semiconductors, PN junction, biasing, and diode characteristics.
- Transistors and Power Devices: UJT, FET, MOSFET, SCR, TRIAC, IGBT, and GTO.
- Electrical Machines: Generator and motor construction, EMF equation, types, and speed control methods.
This group is ideal for candidates from electronics or computer background who have ITI certification in COPA or related trades.
Group III Syllabus – Boiler Attendant / Steam Turbine cum Auxiliary Plant Operator
This section focuses on thermal power plant operations and boiler maintenance.
Key Topics:
- Industrial Fuels: Solid, liquid, and gaseous fuels, coal grading, moisture, ash content, and calorific value.
- Pulverizers: Types and functions in coal mills.
- Combustion Theory: Fuel burning techniques and principles of combustion.
- Heat Transfer: Modes of conduction, convection, and radiation.
- Boilers & Steam Generators: Working principles, types, laws of gases, steam formation, and usage of steam tables.
- Boiler Accessories: Superheater, reheater, economizer, air preheater, and draft systems.
- Draft Systems: Pressurized and balanced draft mechanisms.
- Burners & Firing: Types, arrangements, and importance of purging.
- Heat Exchangers & Pumps: Boiler feed pumps, lubrication systems, and ash handling.
- Steam Turbines: Principle, types, governing mechanism, and safety devices.
- Feed Water Systems: Hard and soft water, deaeration, and boiler feed conditioning.
- Condensers & Safety: Extraction pumps, turbine shutdown procedures, and protective mechanisms.
Candidates should focus on understanding thermal engineering and mechanical systems as they are crucial for power generation operations.
Group IV Syllabus – Welder (Gas & Electric) / Fitter
This group is meant for trades related to mechanical fitting and welding processes.
Key Topics:
- Safety and First Aid: Workplace precautions and industrial safety standards.
- Welding Basics: Importance, equipment, and welding processes (gas and electric).
- Metal Joining Methods: Bolting, riveting, soldering, and brazing.
- Oxy-Acetylene Cutting: Tools, flame types, temperature ranges, and uses.
- Arc Welding: Theory, welding positions (flat, horizontal, vertical, overhead), and electrodes.
- Welding Defects: Causes, effects, and remedies; right-hand and left-hand techniques.
- Metallurgy Basics: Effect of atmosphere on metals, welding of cast iron, copper, alloy steel, and aluminum.
- Testing & Inspection: Destructive and non-destructive tests of weld joints.
- CO₂ Welding: Equipment, wire types, and accessories.
- Fitting Operations: Files, bearings, gears, coupling, pipe fitting, threading, bending, and maintenance.
- Lathe Machine: Construction, safety measures, and operation.
- Power Transmission Systems: Belts, pulleys, nuts, bolts, and washers.
How to Download RVUNL Technician Grade III Syllabus 2025 PDF
Follow these simple steps to download the syllabus directly from the official website:
- Visit the official portal – energy.rajasthan.gov.in
- On the homepage, click on the “Recruitment” section.
- Select “Syllabus” from the menu options.
- The RVUNL Technician Grade 3 Syllabus PDF will appear on your screen.
- Download and save it for preparation reference.
Final Words
The RVUNL Technician Grade 3 Syllabus 2025 gives a clear roadmap for exam preparation. Candidates should carefully analyze their trade syllabus, make short notes, and revise regularly. With focused study and proper understanding of core concepts, securing a position in Rajasthan State Electricity Department becomes much easier.