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RRB Junior Engineer Diesel Electrical Vacancy 2026: Apply Online, Selection Process

📅 Updated On 15 October 2026✨ Update By Jyoti Sharma🌐 Hindi & English

RRB Junior Engineer Diesel Electrical Free Mock Test

Crack the RRB Junior Engineer Diesel Electrical Mock Test 2026 with the help of an online Test series or a free mock test. Every sample paper in the RRB Junior Engineer Diesel Electrical Exam has a designated weight, so do not miss out on any paper. Prepare for the RRB Junior Engineer Diesel Electrical mock test and check your test scores.

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:
 
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.
 
RRB Junior Engineer (Diesel Electrical) Exam Pattern 2026
 
RRB JE CBT 1

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

RRB Junior Engineer (Diesel Electrical) Exam Free Online Test Series

Crack RRB Junior Engineer (Diesel Electrical) Mock Test for exam 2026 with the help of Online Test Series or Free Mock Test. Every Question Paper in RRB JE CBT 1, 2 Exam has a designated weightage so do not miss out any Paper. Practice for RRB JE Mock Test and check your test scores.
1
RRB Junior Engineer (Diesel Electrical) CBT 1 Exam - Hindi100 questions • 90 mins • 100 marks
Free Test →
2
RRB Junior Engineer (Diesel Electrical) CBT 1 Exam - English100 questions • 90 mins • 100 marks
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3
RRB Junior Engineer (Diesel Electrical) CBT 2 Exam - Hindi150 questions • 120 mins • 150 marks
Free Test →
4
RRB Junior Engineer (Diesel Electrical) CBT 2 Exam - English150 questions • 120 mins • 150 marks
Free Test →
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FAQs

RRB Junior Engineer (diesel Electrical) 2026 Free Mock Test Frequently Asked Questions (FAQ's)

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