RRB JE Mechanical Syllabus 2026, Check Topic Wise Syllabus

Main TopicsDetailsEngineering Mechanics– Resolution of forces, equilibrium, and equilibrant – Parallelogram, triangle, polygon laws of forces, and Lami’s theorem – Couple and moment of a couple – Equilibrium conditions for rigid bodies under coplanar non-concurrent forces – Static and dynamic friction; limiting angle of friction and angle of repose – Forces on horizontal and inclined planes with friction – Moment of inertia and radius of gyration for I, channel, T, L (equal & unequal), Z, and built-up sections – Newton’s laws of motion (without derivation), projectile motion, D’Alembert’s principle – Law of conservation of energy and momentumMaterial Science– Mechanical properties: tensile/compressive strength, ductility, malleability, hardness, toughness, brittleness, impact strength, fatigue, creep – Steel classification: mild and alloy steels – Importance and processes of heat treatment: annealing, normalizing, hardening, tempering, carburizing, nitriding, cyanidingStrength of Materials– Stress, strain, stress-strain diagram, factor of safety – Thermal stresses, strain energy, proof resilience, modulus of resilience – Shear force and bending moment diagrams (cantilever, simply supported, continuous, fixed beams) – Torsion in shafts and springs, thin cylinder shellsMachining– Working principle of lathe, types (e.g., engine lathe), construction and specs – Single-point cutting tool: nomenclature, geometry, functions – Lathe operations: turning, facing, taper turning, threading, knurling, forming, drilling, boring, reaming, keyway cutting – Cutting fluids, lubricants – Intro to shaper, slotter, planer, broaching, milling, gear manufacturing, heat treatment of gearsWelding– Types, advantages, limitations of welding – Arc welding: principles, equipment, electrode selection – Gas (oxy-acetylene) welding: principles, equipment, procedures – Soldering & brazing: types and applications of solders/fluxes – Flame cutting processes: types, pros/cons – Welding defects, testing and inspection – Modern methods: submerged arc, CO₂, atomic-hydrogen, ultrasonic, MIG, TIG weldingGrinding & Finishing Process– Metal removal by grinding; abrasives (natural & artificial), bonds (vitrified, silicate, shellac, rubber) – Types of grinding machines: cylindrical, surface, tool & cutter; construction and comparison – Centreless grinding: principles, pros/cons – Work holding devices, wheel maintenance, balancing, coolants – Finishing processes: honing, lapping, super finishing – Electroplating, hot dipping, galvanizing, tin coating, parkerising, anodizing, metal spraying (wire/powder) – Organic coatings: oil/lacquer/bituminous/rubber baseMetrology– Linear measurements: slip gauges, dial indicators – Angular measurements: bevel protractor, sine bar, angle slip gauges – Comparators: mechanical, electrical, optical, pneumatic – Surface roughness measurement: comparison, tracer, interferometry – Measuring tools: collimators, measuring microscopes, interferometers – Inspection via shadow and profile projectionFluid Mechanics & Hydraulic Machinery– Properties: density, specific weight, viscosity, surface tension, compressibility, capillarity – Pascal’s law, pressure measurement, buoyancy – Reynold’s number, types of energy in fluids, Bernoulli’s equation – Flow measuring devices: venturimeter, pitot tube, current meter – Centrifugal pump: principle, construction, efficiencies (manometric, volumetric, mechanical, overall) – Cavitation effects, jet & submersible pumps (working with diagrams)Industrial Management– Job analysis, motivation theories, satisfaction, rewards – Production planning and control: routing, scheduling, dispatching – PERT and CPM with simple problems – Inventory control: ABC analysis, safety stock, reorder level, EOQ – Break-even analysis, store layout/equipment/records – Purchasing procedures, bin card, Cardex – Material handling: manual, hoist, cranes, conveyors, fork trucksThermal Engineering– Thermodynamics: laws, perfect gases – Processes: isochoric, isobaric, isothermal, hyperbolic, isentropic, polytropic, throttling – Heat transfer: conduction, convection, radiation, Stefan–Boltzmann law – Air standard cycles: Carnot, Otto, Diesel – I.C. engine construction, systems, comparison (diesel vs petrol), performance – Air compressors and refrigeration cycles, refrigeration plant principles