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RRB Junior Engineer (diesel Electrical) 2026 Free Mock Test Practice
1
RRB Junior Engineer (Diesel Electrical) CBT 1 Exam - Hindi100 questions • 90 mins • 100 marks
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RRB Junior Engineer (diesel Electrical) 2026 Exam Free Online Question Bank
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RRB Junior Engineer (Diesel Electrical) Syllabus 2026, Exam Pattern
RRB Junior Engineer (Diesel Electrical) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about RRB (Railway Recruitment Board) has published notification 2026 for the recruitment of Junior Engineer (Diesel Electrical) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
RRB JE Syllabus 2026 - Overview
| Conducting Authority | Railway Recruitment Boards (RRB) |
| Name of the Posts | Junior Engineer (Diesel - Electrical) |
| Vacancies | 40 |
| Application Mode | Online |
| Selection Process | First Stage of CBT Second Stage of CBT Document Verification Medical Examination |
| Category | Syllabus and Exam Pattern |
| Official website | Rrbcdg.gov.in |
RRB Junior Engineer (Diesel Electrical) Syllabus 2026
RRB JE CBT 1 Syllabus :-
Mathematics :
1. Number systems
2. BODMAS
3. Decimals
4. Fractions
5. LCM and HCF
6. Ratio and Proportion
7. Percentages
8. Mensuration
9. Time and Work
10. Time and Distance
11. Simple and Compound Interest
12. Profit and Loss
13. Algebra
14. Geometry
15. Trigonometry
16. Elementary Statistics
17. Square Root, Age Calculations
18. Calendar & Clock
19. Pipes & Cistern
General Intelligence & Reasoning :
1. Analogies
2. Alphabetical and Number Series
3. Coding and Decoding
4. Mathematical operations
5. Relationships
6. Syllogism
7. Jumbling
8. Venn Diagram
9. Data Interpretation and Sufficiency
10. Conclusions and Decision Making
11. Similarities and Differences
12. Analytical reasoning
13. Classification
14. Directions
15. Statement – Arguments and Assumptions etc.
General Awareness :
1. Knowledge of Current affairs
2. Indian geography
3. culture and history of India including freedom struggle
4. Indian Polity and constitution
5. Indian Economy
6. Environmental issues concerning India and the World
7. Sports
8. General scientific and technological developments etc.
General Science :
1. Physics, Chemistry and Life Sciences (Up to 10th Standard CBSE Syllabus)
RRB JE CBT 2 Syllabus :-
General Awareness:
Mathematics :
1. Number systems
2. BODMAS
3. Decimals
4. Fractions
5. LCM and HCF
6. Ratio and Proportion
7. Percentages
8. Mensuration
9. Time and Work
10. Time and Distance
11. Simple and Compound Interest
12. Profit and Loss
13. Algebra
14. Geometry
15. Trigonometry
16. Elementary Statistics
17. Square Root, Age Calculations
18. Calendar & Clock
19. Pipes & Cistern
General Intelligence & Reasoning :
1. Analogies
2. Alphabetical and Number Series
3. Coding and Decoding
4. Mathematical operations
5. Relationships
6. Syllogism
7. Jumbling
8. Venn Diagram
9. Data Interpretation and Sufficiency
10. Conclusions and Decision Making
11. Similarities and Differences
12. Analytical reasoning
13. Classification
14. Directions
15. Statement – Arguments and Assumptions etc.
General Awareness :
1. Knowledge of Current affairs
2. Indian geography
3. culture and history of India including freedom struggle
4. Indian Polity and constitution
5. Indian Economy
6. Environmental issues concerning India and the World
7. Sports
8. General scientific and technological developments etc.
General Science :
1. Physics, Chemistry and Life Sciences (Up to 10th Standard CBSE Syllabus)
RRB JE CBT 2 Syllabus :-
General Awareness:
1. Knowledge of Current affairs
2. Indian geography
3. culture and history of India including freedom struggle
4. Indian Polity and Constitution
5. Indian Economy
6. Environmental issues concerning India and the World
7. Sports
8. General Scientific and Technological Developments
Basics of Computers and Applications :
1. Architecture of Computers
2. input and Output devices
3. Storage devices
4. Networking
5. Operating System like Windows
6. Unix
7. Linux
8. MS Office
9. Various data representation
10. Internet and Email
11. Websites & Web Browsers
12. Computer Virus
Basics of Environment and Pollution Control :
1. Basics of Environment
2. The adverse effect of environmental pollution and control strategies
3. Air
4. water and Noise pollution
5. their effect and control
6. Waste Management
7. Global warming
8. Acid rain
9. Ozone depletion
Physics :
1. Introduction to Physics
2. The Universe: Stars, Sun, Asteroids: In a nutshell
3. The Solar System and Satellites
4. Resistance of a Conductor
5. Refraction of Light
6. Reflection of light from Spherical Mirrors
7. Reflection of Light
8. Refraction of light by Spherical Lenses
9. Refraction of light through a glass prism
10. The Human Eye and its defects
11. Thermal Expansion of Solids, Liquids and Gases
12. Mechanical Properties of Fluids
13. Sound: Doppler Effect and Echo
14. Magnetic effects of Electric Current
15. Waves
16. The Kinetic Theory of Matter
17. The Four Fundamental Forces
18. Special and General Theories of Relativity
19. Radioactivity
20. Nuclear Fission and Fusion
Chemistry :
1. Atoms, Molecules and Chemical Arithmetic
2. Atomic Structure
3. Radioactivity and Nuclear Chemistry
4. The Periodic Table and Chemical Families
5. Chemical Bonding and Molecular Structure
6. Coordination Compounds
7. Solid State
8. Liquid State
9. Gaseous State
Technical Abilities (Diesel Electrical) :
1. Core Electrical Engineering Fundamentals :
(These topics form the theoretical base for understanding locomotive electrical systems)
Basic Concepts & Circuit Laws: Concepts of Resistance, Inductance, Capacitance, Current, Voltage, Power, and Energy. Kirchhoff's Laws (KCL & KVL), Simple circuit analysis using Network Theorems.
Magnetic Circuit: Concepts of Flux, MMF, Reluctance, and Electromagnetic Induction (Crucial for understanding Generators/Alternators and Traction Motors).
AC Fundamentals: RMS and Average values. Simple R, L, and C AC Circuits. 3-Phase Systems (relevant for modern locos with AC-AC transmission).
Electrical Machines (General): Construction, Principles, Characteristics, Speed Control, and Starting of DC Motors and Generators and 3-Phase Induction Motors (relevant for auxiliary machines).
2. Diesel Locomotive Electrical Systems (Specialized Focus)
A. Power Generation and Transmission :
Diesel Engine Power Flow: Understanding the principle of a Diesel-Electric locomotive (Diesel Engine drives the Generator/Alternator).
Traction Alternator/Main Generator (MG): Working principle, construction, excitation systems (e.g., Split Excitation, Self-Excitation), and related control systems.
Rectifiers/Inverters: Principles of Rectifiers (converting AC from the Alternator to DC for DC Traction Motors) and Power Converters/Inverters (in modern HHP locos for AC Traction Motors).
Traction Motors (TMs): Detailed study of DC and AC Traction Motors used in Diesel Locos. Their characteristics, mounting, maintenance, and connection (e.g., Series/Parallel combinations).
Control Systems: Principles of Cranking, Propulsion Control, and Load Regulation (matching the Generator output to the load of the Traction Motors).
B. Control, Auxiliaries, and Protection :
Microprocessor/Traction Control System: Knowledge of Microprocessor-Based Control Systems (MBCS) in ALCO and Traction Control Systems (TCS) in HHP locos. Types of Self-tests and diagnostics.
Control Gear Equipment: Understanding the function and maintenance of Electromagnetic (EM) Relays, EM Contactors, Electro-Pneumatic (EP) Power Contactors, Reversing Switches, Master Controllers, Diodes, and Fuses.
Auxiliary Machines: Knowledge of the electrical supply and maintenance of rotating equipment like the Exciter, Auxiliary Generator (for low voltage/battery charging), Compressors, and Blowers/Ventilating Fans.
Battery System: Types of Batteries used, their charging/discharging circuits, and maintenance procedures.
Safety Devices: Various Electrical Safety Devices in the loco, including ground relays, protection against over-voltage/over-current, and fire detection systems.
Driver's Controls & Devices: Working principle and troubleshooting of the Vigilance Control Device (VCD), Sander, Dynamic Brake (DB), and Auto Flasher.
C. Testing, Maintenance, and Standards :
Maintenance Schedules: Knowledge of various Preventive Maintenance Schedules (e.g., Trip, Monthly, Quarterly) followed for electrical systems in Diesel Locos.
Troubleshooting: Common electrical defects, their diagnosis, and troubleshooting in the main power circuit and control circuits.
Testing: Procedures for Load Testing (Self-load & External load box), Initial Running Check (IRC), Final Running Check (FRC) parameters.
Measurements: Use of testing and measuring instruments like Digital Multimeter, Megger (Insulation Tester - 500/1000 V DC), Non-contact clamping meters, etc.
Standards: Knowledge of Indian Electricity (IE) Rules relevant to railway workshops, different classes of Insulation used in electrical machines, and Dynamic Balancing of armatures/rotors.
1. Core Electrical Engineering Fundamentals :
(These topics form the theoretical base for understanding locomotive electrical systems)
Basic Concepts & Circuit Laws: Concepts of Resistance, Inductance, Capacitance, Current, Voltage, Power, and Energy. Kirchhoff's Laws (KCL & KVL), Simple circuit analysis using Network Theorems.
Magnetic Circuit: Concepts of Flux, MMF, Reluctance, and Electromagnetic Induction (Crucial for understanding Generators/Alternators and Traction Motors).
AC Fundamentals: RMS and Average values. Simple R, L, and C AC Circuits. 3-Phase Systems (relevant for modern locos with AC-AC transmission).
Electrical Machines (General): Construction, Principles, Characteristics, Speed Control, and Starting of DC Motors and Generators and 3-Phase Induction Motors (relevant for auxiliary machines).
2. Diesel Locomotive Electrical Systems (Specialized Focus)
A. Power Generation and Transmission :
Diesel Engine Power Flow: Understanding the principle of a Diesel-Electric locomotive (Diesel Engine drives the Generator/Alternator).
Traction Alternator/Main Generator (MG): Working principle, construction, excitation systems (e.g., Split Excitation, Self-Excitation), and related control systems.
Rectifiers/Inverters: Principles of Rectifiers (converting AC from the Alternator to DC for DC Traction Motors) and Power Converters/Inverters (in modern HHP locos for AC Traction Motors).
Traction Motors (TMs): Detailed study of DC and AC Traction Motors used in Diesel Locos. Their characteristics, mounting, maintenance, and connection (e.g., Series/Parallel combinations).
Control Systems: Principles of Cranking, Propulsion Control, and Load Regulation (matching the Generator output to the load of the Traction Motors).
B. Control, Auxiliaries, and Protection :
Microprocessor/Traction Control System: Knowledge of Microprocessor-Based Control Systems (MBCS) in ALCO and Traction Control Systems (TCS) in HHP locos. Types of Self-tests and diagnostics.
Control Gear Equipment: Understanding the function and maintenance of Electromagnetic (EM) Relays, EM Contactors, Electro-Pneumatic (EP) Power Contactors, Reversing Switches, Master Controllers, Diodes, and Fuses.
Auxiliary Machines: Knowledge of the electrical supply and maintenance of rotating equipment like the Exciter, Auxiliary Generator (for low voltage/battery charging), Compressors, and Blowers/Ventilating Fans.
Battery System: Types of Batteries used, their charging/discharging circuits, and maintenance procedures.
Safety Devices: Various Electrical Safety Devices in the loco, including ground relays, protection against over-voltage/over-current, and fire detection systems.
Driver's Controls & Devices: Working principle and troubleshooting of the Vigilance Control Device (VCD), Sander, Dynamic Brake (DB), and Auto Flasher.
C. Testing, Maintenance, and Standards :
Maintenance Schedules: Knowledge of various Preventive Maintenance Schedules (e.g., Trip, Monthly, Quarterly) followed for electrical systems in Diesel Locos.
Troubleshooting: Common electrical defects, their diagnosis, and troubleshooting in the main power circuit and control circuits.
Testing: Procedures for Load Testing (Self-load & External load box), Initial Running Check (IRC), Final Running Check (FRC) parameters.
Measurements: Use of testing and measuring instruments like Digital Multimeter, Megger (Insulation Tester - 500/1000 V DC), Non-contact clamping meters, etc.
Standards: Knowledge of Indian Electricity (IE) Rules relevant to railway workshops, different classes of Insulation used in electrical machines, and Dynamic Balancing of armatures/rotors.
RRB Junior Engineer (Diesel Electrical) Exam Pattern 2026
RRB JE CBT 1
Duration : 90 Minutes
Negative Mark : 0.33
CBT 2 Exam Pattern
Duration : 90 Minutes
Negative Mark : 0.33
| S.No. | Subject | No. of Question | Marks |
| 1. | General Intelligence & Reasoning | 25 | 25 |
| 2. | General Awareness | 15 | 15 |
| 3. | Mathematics | 30 | 30 |
| 4 | General Science | 30 | 30 |
| Total | 100 | 100 |
CBT 2 Exam Pattern
Duration : 120 Minutes
Negative Mark : 0.33
|
S.No.
|
Subject | No. of Question | Marks |
| 1. | General Awareness | 15 | 15 |
| 2. | Physics & Chemistry | 15 | 15 |
| 3. | Basics of Computer Application | 10 | 10 |
| 4. | Basics of Environment and Pollution Control | 10 | 10 |
| 5. | Technical Abilities (Diesel Electrical) | 100 | 100 |
| Total | 150 | 150 |
Exam Date : Notified Soon
Starting Date of Application Form : 14th August 2026
Last Date of Application Form : 13th September 2026
Total Post : 40
FAQs
RRB Junior Engineer (diesel Electrical) 2026 Exam Syllabus Frequently Asked Questions (FAQ's)
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