SSC JE Syllabus 2025 For Tier 1 and Tier 2 Exams, Download PDF

(ii) General Awareness

(iii) Part-A General Engineering (Civil & Structural) or
Part B General Engineering (Electrical) or
Part-C General Engineering (Mechanical)

• Analogies
• Similarities and Differences
• Space Visualization
• Problem Solving
• Analysis
• Judgment
• Decision Making
• Visual Memory
• Discrimination
• Observation
• Relationship Concepts
• Arithmetical Reasoning
• Verbal and Figure Classification
• Arithmetical Number Series
• Dealing with Abstract Ideas and Symbols
• Arithmetical Computations
• Analytical Functions

• Current Affairs (National & International)
• India and its Neighbouring Countries
• History of India
• Indian Culture
• Geography (Physical, Social & Economic aspects)
• Indian Polity and Constitution
• Economic Scene
• Scientific Research and Discoveries
• General Science
• Environmental Issues
• Important Government Schemes and Policies
• Awards and Honours
• Books and Authors
• Sports
• Static GK (e.g., national symbols, important days, etc.)

• Theory of Machines and Machine Design
• Engineering Mechanics & Strength of Materials
• Thermodynamics (1st & 2nd Laws)
• IC Engines (Performance, Combustion, Cooling & Lubrication)
• Air Standard Cycles (Otto, Diesel)
• Rankine Cycle & Boilers
• Air Compressors & Refrigeration Cycles
• Steam Nozzles & Turbines
• Fluid Mechanics & Machinery
• Measurement of Flow & Pressure
• Hydraulic Turbines & Centrifugal Pumps
• Classification of Steel & Basic Production Engineering

• Basic Electrical Concepts
• Circuit Laws (Ohm’s Law, Kirchhoff’s Laws)
• Magnetic Circuits
• AC Fundamentals
• Measurement & Measuring Instruments
• Electrical Machines (DC & AC)
• Fractional Kilowatt Motors & Single-Phase Induction Motors
• Synchronous Machines
• Generation, Transmission & Distribution of Electrical Power
• Estimation and Costing
• Utilization of Electrical Energy (Heating, Welding, Lighting, etc.)
• Basic Electronics (Diodes, Transistors, BJTs, JFETs)

• Building Materials
• Estimating, Costing, and Valuation
• Surveying
• Soil Mechanics
• Hydraulics
• Irrigation Engineering
• Transportation Engineering
• Environmental Engineering
• Structural Engineering: Theory of Structures, Concrete Technology, RCC Design, Steel Design

• Resistance, inductance, capacitance
• Factors affecting R, L, and C
• Current, voltage, power, energy
• Units of electrical quantities

• Kirchhoff’s Current and Voltage Laws
• Simple circuit solutions using:
• Network theorems

• Flux, MMF (Magneto-Motive Force), and reluctance
• Types of magnetic materials
• Magnetic field calculations for:
• Straight conductors
• Circular loops
• Solenoids
• Electromagnetic induction
• Self and mutual induction

• Instantaneous, peak, RMS, and average values
• Sinusoidal waveform representation
• Simple series and parallel AC circuits (R, L, C)
• Resonance, tank circuit
• Polyphase systems:
• Star and delta connection
• 3-phase power concepts
• DC and sinusoidal response of R-L and R-C circuits

• Power and energy measurement:
• Single-phase and three-phase (active/reactive)
• 2-wattmeter method for 3-phase power
• Measurement of frequency and phase angle
• Instruments:
• Ammeter and voltmeter (moving coil and moving iron)
• Wattmeter (range extension)
• Multimeter, megger, energy meter
• AC bridges
• CRO and signal generator
• CT (Current Transformer) and PT (Potential Transformer)
• Earth fault detection methods

• DC Machines
  Construction and working principles
• Characteristics of DC motors and generators
• Speed control methods
• Starting and braking of DC motors
• Losses and efficiency analysis
• (b) Transformers
  Single-phase and three-phase transformers
• Construction and working principle
• Equivalent circuit, voltage regulation
• OC (Open Circuit) and SC (Short Circuit) tests
• Losses and efficiency
• Effect of voltage, frequency, and waveform
• Parallel operation of transformers
• Auto-transformers
• (c) Induction Motors
  3-phase induction motor construction and working
• Rotating magnetic field
• Torque-speed characteristics
• Starting and speed control methods
• Braking techniques
• Impact of voltage and frequency on performance

• Power station types
• Load factor, diversity factor, demand factor
• Cost of generation and station interconnection
• Power factor improvement
• Tariff types
• Faults and symmetrical short circuit current
• Switchgear basics:
• Circuit breaker ratings
• Arc extinction (oil, air)
• HRC fuses
• Protection systems:
• Earth leakage, overcurrent
• Buchholtz relay
• Merz-Price protection (generators & transformers)
• Feeder and busbar protection
• Lightning arresters
• Transmission & distribution systems
• Cable types, ratings, derating factors
• Comparison of conductor materials and system efficiency

• Illumination systems
• Electric heating and welding
• Electroplating
• Electric drives and industrial motors

• Simple machine concept
• Four-bar linkage, link motion
• Flywheels and energy fluctuation
• Power transmission (V-belts & Flat belts)
• Clutches: Plate and Conical
• Gears: Types, profiles, gear ratio calculation
• Governors: Principles and classification- Riveted joints- Cams and bearings- Friction in collars and pivots

• Equilibrium of forces
• – Laws of motion
• – Friction concepts
• – Stress and strain, elastic limit, elastic constants
• – Bending moment and shear force diagrams
• – Stress in composite bars
• – Torsion in circular shafts
• – Buckling of columns: Euler’s and Rankine’s theories
• – Thin-walled pressure vessels

• – p-v and P-T diagrams (e.g., H₂O)
• – Steam tables and steam generation
• – Saturated, wet, and superheated steam
• – Dryness fraction and degree of superheat
• – Mollier’s (h-s) chart

• – Stored/internal energy definition
• – 1st Law for cyclic process
• – Non-flow and flow energy equations
• – Enthalpy definition
• – Steady State Steady Flow (SSSF) conditions
• – SSSF Energy Equation

• Heat reservoir, sink, source
• – Heat engine, heat pump, refrigerator
• – Thermal efficiency & Coefficient of Performance (COP)
• – Kelvin-Planck & Clausius statements
• – Thermodynamic temperature scale
• – Entropy, Clausius integral
• – Entropy changes in ideal gases
• – Carnot cycle & efficiency
• – PMM-2 (definition & impossibility)

• – Otto cycle: P-V, T-S diagrams, thermal efficiency
• – Diesel cycle: P-V, T-S diagrams, thermal efficiency
• – IC engine performance, combustion, cooling & lubrication

•  – Simple Rankine cycle on P-V, T-S, h-s diagrams
• – Efficiency with and without pump work

• – Classification and specifications
• – Boiler fittings and accessories
• – Fire-tube and water-tube boilers

• – Air compressor cycles
• – Refrigeration cycle principles
• – Working of refrigeration plant

• – Steel classification: Mild & alloy steel
• – Heat treatment of steel
• – Welding: Arc, Gas, Resistance, TIG, MIG
• – Brazing, soldering
• – Welding defects and testing (including NDT)
• – Foundry & casting: methods, defects, processes
• – Forging and extrusion
• – Metal cutting principles
• – Cutting tools and machining basics: Lathe, Milling, Drilling, Shaping, Grinding
• – Machines, tools, and manufacturing processes