The Staff Selection Commission (SSC) conducts the Junior Engineer Examination to recruit qualified diploma and degree engineers into key central government organizations such as the Central Water Commission, Military Engineer Services (MES), and DGQA Naval. Securing a Junior Engineer (Mechanical) post requires a targeted preparation approach aligned with the latest syllabus and exam format. This guide details the complete SSC JE Mechanical Engineering Syllabus 2026, the updated examination scheme, topic-wise syllabus weightage, and strategic preparation advice to guide your study plan.
SSC JE Exam 2026: Overview
| Particulars | Details |
| Recruitment Body | Staff Selection Commission (SSC) |
| Notification Reference | F. No. HQ-C-3019/1/2026-C-3 |
| Post Title | Junior Engineer (Mechanical) |
| Total Notified Vacancies | 1748 (Combined Tentative Vacancies) |
| Cadre Classification | Group ‘B’ (Non-Gazetted) |
| Pay Scale | Level-6 (₹35,400 – ₹1,12,400/-) |
| Exam Delivery Mode | Computer-Based Examination (Online) |
| Official Portal |
SSC JE Mechanical Engineer Selection Criteria
The selection process for SSC JE Mechanical consists of three distinct stages designed to test aptitude, discipline knowledge, and credential eligibility:
- Paper-I (Computer-Based Examination): Serves as the primary shortlisting round consisting of non-technical reasoning, general awareness, and domain engineering questions. Marks obtained in Paper-I are normalized and evaluated against qualifying thresholds to shortlist candidates for the next phase.
- Paper-II (Computer-Based Examination): Evaluates comprehensive, in-depth subject matter expertise in Mechanical Engineering. Final merit rankings and department allocations are primarily decided on candidate scores in Paper-II combined with their submitted post preferences.
- Document Verification (DV): Conducted directly by the respective user organizations and departments following the announcement of final results to verify educational credentials, category claims, and relevant experience certificates.
SSC JE Mechanical Engineer Exam Pattern
The SSC JE examination consists of two online papers, both administered as objective-type tests featuring multiple-choice questions (MCQs). Paper-I spans general aptitude and baseline technical competence for 200 marks, carrying a penalty of 0.25 marks for every incorrect response. Paper-II focuses solely on mechanical engineering, carrying 300 marks with a penalty of 1 mark for each incorrect response. Both examinations have an allotted duration of two hours each. An on-screen virtual scientific calculator and steam tables are provided on the candidate’s exam console during Paper-II.
| Paper | Subject Components | Questions | Maximum Marks | Time Duration | Negative Marking |
| Paper-I | General Intelligence & Reasoning | 50 | 50 | 2 Hours | 0.25 Marks per wrong answer |
| General Awareness | 50 | 50 | |||
| Part-C: General Engineering (Mechanical) | 100 | 100 | |||
| Paper-II | Part-C: General Engineering (Mechanical) | 100 | 300 | 2 Hours | 1.00 Mark per wrong answer |
Topic-wise SSC JE Mechanical Engineering Syllabus
The technical syllabus for Mechanical Engineering (Part-C) corresponds broadly to the diploma curriculum in mechanical engineering. It encompasses foundational mechanics, machine elements, thermal systems, fluid sciences, production processes, and contemporary manufacturing methods. The subject-wise scope for both Paper-I and Paper-II is detailed below:
| Core Subject Area | Detailed Topics Included in the Syllabus |
| Engineering Mechanics & Strength of Materials | Free body diagrams, force equilibrium, resultant forces, Lami’s Theorem, laws of friction, centroid, center of gravity. Simple stress and strain, types of beams, shear force and bending moment diagrams, bending and deflection of beams, torsion in shafts, thin cylindrical shells. |
| Theory of Machines & Machine Design | Cams and followers, drives (belts, chains, ropes, gears), gear trains, flywheels, governors, balancing, vibrations, brakes, dynamometers, clutches, bearings. Types of loads and stresses, creep and fatigue, theories of failure, design of joints (cotter, knuckle, bolted, welded), levers, cranks, keys, shafts, couplings, spur gears, power screws, and springs. |
| Materials Science & Engineering | Crystal structures and bonding, Iron-Carbon phase equilibrium diagram, heat treatment of steels, cast irons, plain carbon steels, major non-ferrous alloys (aluminium, nickel-copper, bearing alloys), mechanical testing, non-destructive testing (NDT), and corrosion mechanisms. |
| Thermal Engineering & Thermodynamics | Energy sources, laws of thermodynamics, thermal cycles (Otto, Diesel, Dual with P-V and T-s diagrams), thermal power plant configurations, heat engines, refrigerators, heat pumps, steam properties, steam generators, nozzles, impulse/reaction steam turbines, cooling towers, IC engine types, air compressors, refrigeration cycles, air conditioning systems, gas turbines, jet propulsion, heat transfer (conduction, convection, radiation), and heat exchangers. |
| Fluid Mechanics & Hydraulic Machinery | Fluid properties, fluid statics, kinematics, continuity equation, fluid dynamics, flow through pipes, jet impact on flat and curved vanes, hydraulic turbines, power plant layouts, centrifugal pumps, and reciprocating pumps. |
| Manufacturing Engineering & Metrology | Pattern making, moulding, casting methods, metal forming, welding (gas, arc, resistance), lathe operations, broaching, drilling, milling, gear generation, grinding, press work. Measurement standards, precision, accuracy, sensitivity, calibration, comparators, surface finish assessment, coordinate measuring machines (CMM), limits, fits, tolerances, and interchangeability. |
| Industrial Engineering & Advanced Manufacturing | Facility location and plant layout, work-study, work measurement, production planning and control (PPC), statistical quality control (SQC), inventory management models. Jigs and fixtures, CNC machines, programmable logic controllers (PLC), special purpose machines (SPM), non-traditional machining (EDM, ECM, AJM, LBM, EBM), fundamentals of CAD/CAM, industrial robotics, and flexible manufacturing systems (FMS). |
