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RRB Junior Engineer (diesel Mechanical) 2026 Free Mock Test Practice
1
RRB Junior Engineer (Diesel Mechanical) CBT 1 Exam - Hindi100 questions • 90 mins • 100 marks
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RRB Junior Engineer (Diesel Mechanical) CBT 1 Exam - English100 questions • 90 mins • 100 marks
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RRB Junior Engineer (Diesel Mechanical) CBT 2 Exam - Hindi150 questions • 120 mins • 150 marks
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RRB Junior Engineer (Diesel Mechanical) CBT 2 Exam - English150 questions • 120 mins • 150 marks
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RRB Junior Engineer (diesel Mechanical) 2026 Exam Free Online Question Bank
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5. 1500 (+) Current Affairs MCQ with Answer PDF in Hindi.
6. 1000 (+) GK MCQ with Answer PDF Book in Hindi.
2. Question Bank - 2000 Questions with Answer.
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RRB Junior Engineer (Diesel Mechanical) Syllabus 2026, Exam Pattern
RRB Junior Engineer (Diesel Mechanical) 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 Mechanical) 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 Mechanical |
| Vacancies | 45 |
| 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 Mechanical) 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 Mechanical) :
1. Engineering Mechanics ;
Forces: Resolution of forces, Equilibrium and Equilibrant, Parallelogram/Triangle/Polygon laws of forces, Lami's theorem.
Statics: Couple and moment of a couple, Condition for equilibrium of rigid bodies under coplanar non-concurrent forces.
Friction: Static and dynamic friction, Limiting angle of friction and angle of repose, Motion on horizontal and inclined planes with friction.
Dynamics: Newton's laws of motion, Motion of projectile, D'Alembert's principle, Conservation laws (energy, momentum).
Moment of Inertia: Calculation of moment of inertia and radius of gyration for standard sections (I, Channel, T, L, Z, Built-up sections).
2. Material Science :
Mechanical Properties: Tensile strength, Compressive strength, Ductility, Malleability, Hardness, Toughness, Brittleness, Impact strength, Fatigue, Creep resistance.
Steels: Classification of steels (mild, alloy steels).
Heat Treatment: Importance and processes like Annealing, Normalizing, Hardening, Tempering, Carburizing, Nitriding, and Cyaniding.
3. Strength of Materials :
Basic Concepts: Stress, Strain, Stress-strain diagram, Factor of safety, Thermal stresses, Strain energy, Proof resilience, and Modulus of resilience.
Beams: Shear Force and Bending Moment diagrams for Cantilever, Simply Supported, Continuous, and Fixed beams.
Torsion: Torsion in shafts and springs.
Pressure Vessels: Thin cylinder shells.
4. Machining and Machine Tools :
Lathe: Working principle, Types (Engine lathe), Construction details and specifications.
Cutting Tools: Nomenclature of single-point cutting tool, Geometry, Tool signature, Functions of tool angles.
Operations: Turning, Facing, Taper turning, Thread cutting, Knurling, Forming, Drilling, Boring, Reaming, Keyway cutting.
Fluids: Cutting fluids, Coolants, and Lubricants.
Other Machines: Introduction to Shaper, Slotter, Planer, Broaching, Milling, and Gear manufacturing.
5. Welding ;
Basics: Classification, Advantages and limitations.
Arc Welding: Principles, Equipment, Electrode selection, Modern processes (MIG, TIG, $text{CO}_2$, Atomic-Hydrogen).
Gas Welding: Principles of gas (oxy-acetylene) welding, Equipment.
Procedures: Welding procedures (Arc & Gas), Soldering and Brazing (techniques, solders, fluxes).
Defects and Inspection: Defects in welding, Testing and inspection.
6. Grinding and Finishing Processes :
Grinding: Principles of metal removal by grinding, Abrasives (natural/artificial), Bonds (vitrified, silicate, shellac, rubber).
Machines: Grinding machines (cylindrical, surface, tool & cutter), Construction, Merits.
Centreless Grinding: Principles, Advantages & limitations.
Finishing: Honing, Lapping, Super finishing, Electroplating, Hot dipping, Organic coatings.
7. Fluid Mechanics and Hydraulic Machinery
Fluid Properties: Density, Specific weight/gravity, Viscosity, Surface tension, Compressibility, Capillarity.
Fluid Statics: Pascal's law, Pressure measurement, Buoyancy.
Fluid Dynamics: Reynolds number, Forms of energy (pressure, potential, kinetic), Conservation laws (mass, energy, momentum), Bernoulli's equation and assumptions, Head losses.
Flow Measurement: Venturimeters, Pitot-tube, Current meters.
Pumps: Working principle & constructional details of Centrifugal pump, Efficiencies, Cavitation, Jet & Submersible pumps.
8. Thermal Engineering (Thermodynamics and IC Engines)
Thermodynamics: Laws of thermodynamics ($text{Zeroth, First, Second}$), Laws of perfect gases, Thermodynamic processes (Isochoric, Isobaric, Isothermal, Isentropic, Polytropic, Throttling).
Heat Transfer: Modes of heat transfer (Conduction, Convection, Radiation), Stefan–Boltzmann law.
Cycles: Air standard cycles (Carnot, Otto, Diesel).
I.C. Engines: Construction and working, Systems of IC engines, Comparison of Diesel and Petrol engines, Performance of IC engines.
9. Metrology and Inspection
Measurement: Linear measurement (slip gauges, dial indicators), Angular measurement (bevel protractor, sine bar).
Gauges: Plug and snap gauges.
Comparators: Mechanical, Electrical, Optical, and Pneumatic comparators.
Surface Measurement: Surface roughness measurement methods.
Optical Instruments: Interferometry, Tool-makers' microscope, Profile projector.
10. Industrial Management
Personnel: Job analysis, Motivation, Satisfaction, Performance reward systems.
Production Planning: Routing, Scheduling, Dispatching, PERT and CPM.
Inventory Control: ABC Analysis, Safety stock, Re-order level, $text{EOQ}$ (Economic Ordering Quantity).
Others: Break-even analysis, Stores layout/equipment/records, Purchasing procedures, Material handling.
1. Engineering Mechanics ;
Forces: Resolution of forces, Equilibrium and Equilibrant, Parallelogram/Triangle/Polygon laws of forces, Lami's theorem.
Statics: Couple and moment of a couple, Condition for equilibrium of rigid bodies under coplanar non-concurrent forces.
Friction: Static and dynamic friction, Limiting angle of friction and angle of repose, Motion on horizontal and inclined planes with friction.
Dynamics: Newton's laws of motion, Motion of projectile, D'Alembert's principle, Conservation laws (energy, momentum).
Moment of Inertia: Calculation of moment of inertia and radius of gyration for standard sections (I, Channel, T, L, Z, Built-up sections).
2. Material Science :
Mechanical Properties: Tensile strength, Compressive strength, Ductility, Malleability, Hardness, Toughness, Brittleness, Impact strength, Fatigue, Creep resistance.
Steels: Classification of steels (mild, alloy steels).
Heat Treatment: Importance and processes like Annealing, Normalizing, Hardening, Tempering, Carburizing, Nitriding, and Cyaniding.
3. Strength of Materials :
Basic Concepts: Stress, Strain, Stress-strain diagram, Factor of safety, Thermal stresses, Strain energy, Proof resilience, and Modulus of resilience.
Beams: Shear Force and Bending Moment diagrams for Cantilever, Simply Supported, Continuous, and Fixed beams.
Torsion: Torsion in shafts and springs.
Pressure Vessels: Thin cylinder shells.
4. Machining and Machine Tools :
Lathe: Working principle, Types (Engine lathe), Construction details and specifications.
Cutting Tools: Nomenclature of single-point cutting tool, Geometry, Tool signature, Functions of tool angles.
Operations: Turning, Facing, Taper turning, Thread cutting, Knurling, Forming, Drilling, Boring, Reaming, Keyway cutting.
Fluids: Cutting fluids, Coolants, and Lubricants.
Other Machines: Introduction to Shaper, Slotter, Planer, Broaching, Milling, and Gear manufacturing.
5. Welding ;
Basics: Classification, Advantages and limitations.
Arc Welding: Principles, Equipment, Electrode selection, Modern processes (MIG, TIG, $text{CO}_2$, Atomic-Hydrogen).
Gas Welding: Principles of gas (oxy-acetylene) welding, Equipment.
Procedures: Welding procedures (Arc & Gas), Soldering and Brazing (techniques, solders, fluxes).
Defects and Inspection: Defects in welding, Testing and inspection.
6. Grinding and Finishing Processes :
Grinding: Principles of metal removal by grinding, Abrasives (natural/artificial), Bonds (vitrified, silicate, shellac, rubber).
Machines: Grinding machines (cylindrical, surface, tool & cutter), Construction, Merits.
Centreless Grinding: Principles, Advantages & limitations.
Finishing: Honing, Lapping, Super finishing, Electroplating, Hot dipping, Organic coatings.
7. Fluid Mechanics and Hydraulic Machinery
Fluid Properties: Density, Specific weight/gravity, Viscosity, Surface tension, Compressibility, Capillarity.
Fluid Statics: Pascal's law, Pressure measurement, Buoyancy.
Fluid Dynamics: Reynolds number, Forms of energy (pressure, potential, kinetic), Conservation laws (mass, energy, momentum), Bernoulli's equation and assumptions, Head losses.
Flow Measurement: Venturimeters, Pitot-tube, Current meters.
Pumps: Working principle & constructional details of Centrifugal pump, Efficiencies, Cavitation, Jet & Submersible pumps.
8. Thermal Engineering (Thermodynamics and IC Engines)
Thermodynamics: Laws of thermodynamics ($text{Zeroth, First, Second}$), Laws of perfect gases, Thermodynamic processes (Isochoric, Isobaric, Isothermal, Isentropic, Polytropic, Throttling).
Heat Transfer: Modes of heat transfer (Conduction, Convection, Radiation), Stefan–Boltzmann law.
Cycles: Air standard cycles (Carnot, Otto, Diesel).
I.C. Engines: Construction and working, Systems of IC engines, Comparison of Diesel and Petrol engines, Performance of IC engines.
9. Metrology and Inspection
Measurement: Linear measurement (slip gauges, dial indicators), Angular measurement (bevel protractor, sine bar).
Gauges: Plug and snap gauges.
Comparators: Mechanical, Electrical, Optical, and Pneumatic comparators.
Surface Measurement: Surface roughness measurement methods.
Optical Instruments: Interferometry, Tool-makers' microscope, Profile projector.
10. Industrial Management
Personnel: Job analysis, Motivation, Satisfaction, Performance reward systems.
Production Planning: Routing, Scheduling, Dispatching, PERT and CPM.
Inventory Control: ABC Analysis, Safety stock, Re-order level, $text{EOQ}$ (Economic Ordering Quantity).
Others: Break-even analysis, Stores layout/equipment/records, Purchasing procedures, Material handling.
RRB Junior Engineer (Diesel Mechanical) 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 Mechanical) | 100 | 100 |
| Total | 150 | 150 |
Exam Date 2026 : Notified Soon
Starting Date of Application Form : 14th August 2026
Last Date of Application Form : 13th September 2026
Total Post : 45
FAQs
RRB Junior Engineer (diesel Mechanical) 2026 Exam Syllabus Frequently Asked Questions (FAQ's)
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The candidates must be well versed and acquainted with the syllabus and the exam pattern. Select the areas where improvement is required and schedule your preparation accordingly. To ace this exam, the applicants ought to maintain speed with high accuracy. Practicing previous years question papers will help you understand the exam pattern and the level of difficulty of the exam. You need to hone your strengths and improve upon your weaknesses. Toppersexam.com will aid you through the preparation and drive you to success. At Toppersexam.com, you can practice a complete set of test series along with a free RRB Junior Engineer Diesel Mechanical mock test designed by our expert faculty.
The syllabus of RRB Junior Engineer Diesel Mechanical Exam includes all topics that are important for the exam and are necessary for thorough preparation. Toppersexam provides a complete and updated syllabus with a detailed topic-wise breakdown.
You can download the complete RRB Junior Engineer Diesel Mechanical Exam syllabus PDF from toppersexam.com. The PDF is available free and includes a detailed list of topics, section-wise subjects, and weightage for better exam preparation.
Yes, RRB Junior Engineer Diesel Mechanical Exam has a topic-wise syllabus that includes all relevant subtopics. Toppersexam provides the detailed breakdown, helping candidates focus on high-weightage areas and avoid missing important sections.
Toppersexam ensures that the RRB Junior Engineer Diesel Mechanical syllabus is updated for 2026. The latest syllabus reflects current exam trends, question patterns, and updated topics as per official notifications.
The RRB Junior Engineer Diesel Mechanical Exam pattern includes details like the number of sections, total questions, marks distribution, and exam duration. Toppersexam provides a comprehensive guide on exam format, marking scheme, and question types.
Yes, the majority of questions in RRB Junior Engineer Diesel Mechanical Exam are MCQs. Toppersexam provides practice MCQs with answers to help candidates understand the question pattern and improve accuracy.
Yes, questions are divided section-wise. Toppersexam provides a clear guide on how many questions are asked per section and their difficulty level for effective preparation.
Yes, Toppersexam offers online mock tests that strictly follow the RRB Junior Engineer Diesel Mechanical Exam pattern. These mocks help candidates practice time management and get real-exam experience.
Yes, exam patterns can change over time. Toppersexam provides updated information on the latest exam pattern, question types, and section-wise changes.
Understanding the exam pattern is crucial for time management, question prioritization, and strategy planning. Toppersexam guides candidates on how to use the pattern effectively to maximize scores.
Start by dividing the syllabus into sections and prioritizing high-weightage topics. Toppersexam provides a preparation strategy, along with topic-wise tips and sample questions to make syllabus analysis easier.
Yes, focusing on high-weightage topics improves efficiency. Toppersexam highlights important topics, helping candidates prioritize sections for better performance.
Toppersexam provides a free downloadable PDF that includes both the syllabus and detailed exam pattern. This helps candidates study offline and revise efficiently.