RRB JE Mechanical study guide
RRB JE Mechanical · Work through your exam, one topic at a time.
RRB JE (Mechanical) is the competitive recruitment examination through which the Railway Recruitment Boards fill Junior Engineer and closely related technical posts in Indian Railways, including mechanical-department vacancies in workshops, diesel sheds, carriage-and-wagon depots and production units. Candidates normally need a diploma or degree in mechanical engineering, so the paper assumes a working knowledge of the standard diploma syllabus rather than school-level science alone. The RRB JE Mechanical study guide has 8 sections and about 2,541 words.
01Mathematics - CBT 1 Numerical Ability
Mathematics in RRB JE CBT 1 is Class 10 level arithmetic plus light algebra, geometry and trigonometry, compressed into a paper shared with reasoning, science and awareness. Expect number system, HCF/LCM, percentage, ratio-proportion, average, profit and loss, simple and compound interest, time-work and pipes, time-speed-distance, mensuration 2D/3D, and basic trigonometric identities.
355 words, about 2 min02General Intelligence and Reasoning - CBT 1
Reasoning in CBT 1 is a speed test of pattern recognition: analogy, classification (odd one out), series (number, letter, figure), coding-decoding, blood relations, direction and distance, seating arrangement, syllogism, Venn diagrams, mathematical operations, dice and cubes, mirror and water images, paper folding, embedded figures and figure completion. Most items are solvable in under 45 seconds once the pattern type is recognised.
312 words, about 2 min03General Awareness - CBT 1 and CBT 2
General Awareness appears in both CBT 1 and CBT 2 and is the cheapest place to gain marks because it rewards recall, not calculation. Coverage: Indian polity and the Constitution, modern Indian history and the freedom movement, geography of India and the world, Indian economy and budgets, general science in the news, sports, awards and honours, books and authors, art and culture, important days, and current affairs of the preceding 8–12 months, especially railway-related developments.
317 words, about 2 min04General Science - CBT 1
CBT 1 General Science is NCERT Class 9–10 level physics, chemistry and biology, tested as direct factual recall plus one-step numericals. Physics: motion, force, gravitation, work-energy, sound, light, electricity and magnetism.
308 words, about 2 min05Physics and Chemistry - CBT 2
CBT 2 physics and chemistry go deeper than CBT 1: units and measurement, kinematics and laws of motion, work-power-energy, gravitation, mechanical properties of matter, heat and thermodynamics, waves and optics, electrostatics, current electricity, magnetism, and modern physics basics. Chemistry covers atomic structure, periodicity, chemical bonding, mole concept, acids-bases-salts, electrochemistry, metals and non-metals, hydrocarbons and polymers.
319 words, about 2 min06Basics of Computers and Applications - CBT 2
This section checks working knowledge of computer fundamentals rather than programming: hardware and software, memory and storage units, generations of computers, operating systems, MS Office (Word, Excel, PowerPoint), internet and networking basics, email, and cyber safety. Hardware: CPU (ALU + control unit + registers), input devices, output devices, primary memory (RAM volatile, ROM non-volatile) and secondary storage (HDD, SSD, optical, pen drive).
300 words, about 2 min07Basics of Environment and Pollution Control - CBT 2
This section tests environment literacy as required for railway works: ecosystem structure and function, food chains, biodiversity and conservation, natural resources, and the causes, effects and control of air, water, soil and noise pollution, plus waste management and environmental law. Ecosystem components: producers, consumers, decomposers, and abiotic factors; energy flows one way through a food chain while nutrients cycle.
325 words, about 2 min08Technical Abilities - Mechanical Engineering - CBT 2
This is the largest scoring block of CBT 2. Coverage: engineering mechanics and strength of materials, thermodynamics and IC engines, fluid mechanics and machinery, theory of machines, manufacturing processes, engineering materials, and power plant basics.
305 words, about 2 min