IES Syllabus : UPSC IES (ESE) Examination Detailed Syllabus

IES (ESE) Examination :- The UPSC IES (ESE) or Engineering Services Examination is the most reputed recruitment examination for the selection of Grade ‘A’ Officers in Engineering Services of Indian Government. UPSC conducts the IES Exam every year. This is a highly desirable position and most of the Government job aspirants, who hold engineering degrees, take this exam to become one of the most respected positions in the Government. The categories in which candidates will be selected and positioned as Grade- A Officers are:-

  • Category – I- Civil Engineering
  • Category – II – Mechanical Engineering
  • Category – III – Electrical Engineering
  • Category – IV – Electronics and Telecommunications Engineering

So we will discuss about the syllabus, exam pattern and selection process of the UPSC IES (ESE) Examination.

IES Exam Pattern :-

IES Exam Preliminary Paper and Mains Paper Pattern :-

IES Exam Selection Procedure :-

IES Syllabus : UPSC IES (ESE) Examination Detailed Syllabus :-

The detailed syllabus for the UPSC IES (ESE) Examination can be classified according to the streams and respective subjects or topics. The Engineering branches of Mechanical, Civil, Electrical and Electronics/Telecommunication is a compilation of many multiple subjects, which is a complete informative and learning material about the Engineering. So we will classify the syllabus in accordance with the Prelims and Mains examination comprising papers. The syllabus to these papers is explained in relevance with topics and subject for respective branches.

IES Syllabus Prelims Stage – Paper I(Common to all candidates) :-

The preliminary examination’s General Studies and Engineering aptitude syllabus and question paper will be developed in account for a general expectation of a Science/Engineering graduate may take. It will be similar to the examination principles of an Indian university.

General Studies and Engineering Aptitude :-

  • Issues related to the National and International significance in social, industrial and economic development.
  • Aptitude comprising Logical reasoning and Analytical approach.
  • Engineering Mathematics and Numerical Analysis.
  • General Designing and drawing principles, Significance of Safety.
  • Quality Practices in Construction, Manufacturing, Production, maintenance and services.
  • Environmental and Energy specifications(Conservation, Pollution & degradation, climate changes and impact assessment)
  • Basic study of material sciences and engineering.
  • Project management basics.
  • Tools used in ICT (Information and Communication technology) along with applications of use in networking, technology in education and e-governance.
  • Ethics and principle values in profession of engineering.

IES Syllabus of Prelims Stage – Paper II & Mains Stage Paper I and II :-

Engineering Discipline :-

The discipline paper will be different for category and stream chosen. But the subjects and topics for each engineering discipline will remain same for the respective stream candidates. Candidates will have to face the similar questions in the respective stream in engineering discipline. Just the preliminary examination paper (Paper II) will be of objective type while Mains paper (I & II) will be of subjective type. The syllabus defining topics, from which questions will be asked, is explained below:-

IES Syllabus of Civil Engineering (Paper I) :-

  • Building Materials:

Lime, Stone, Plastics, Glass, Ceramics, Aluminium, Basic admixtures, FRP, Steel, Timber, Fly Ash, Bricks and Aggregates: Details, Properties and criteria of selection.

Cement: Composition, Types, Properties, Applications and specification with various tests. Cement and lime mortars and Concrete: Types, Mixes designs, tests and properties. Aggregate proportioning and methods for designing of mixes.

  • Structural Analysis:

Strength of materials, Classification of stresses and strains, Bending and stress concept, Shear forces and bending moment. Analysis of determinate and indeterminate structures. Beams, Trusses, Frames, Rolling loads, Influence lines, Unit Load and relevant methods . Forced and Free vibrations of freedom system (single and multi degree). Suspension cables. CAD (Computer Aided design) concepts.

  • Solid Mechanics:

Stress and strain: Types , Elastic constants, Mohr’s circle of strain and stress, Elastics theories (failures), Principle stresses, Shear, Bending and Torsion.

  • Design of Steel Structures:

Working stress methods and principles, tensions designs and compression members, Beam: Design and column connections, Girders, Built-up sections, Ultimate load design, Industrial roofs development.

  • Design of Concrete and Masonry structures:

State design for bending, Axial compressions and combination forces, Shear, Beam designs, Slabs, Foundations, Lintels, Retaining walls, Staircases, Tanks. Methods and principles of pre-stressed concrete designs inclusion with materials. Earthquake resistance and designing of structures, Design of masonry structure.

  • Construction Practice, Planning and Management:

Construction – Analysis, Planning and tools, Site Investigation and managements, Estimation of large projects and management tools, Network analysis for types of works. Rate analysis for various kind of works, Contract management and tendering process, Quality assurance and control, Efficiency and productivity, estimation of Operational costs, acquisition of lands, labour safety and their welfare.

IES Syllabus of Civil Engineering (PAPER – II) :-

  • Flow of Fluids, Hydraulic Machines and Hydro Power:-
  • Fluid mechanics, Open channel and flow, Pipe Flows:

Properties of fluids. Dimensional modelling and analysis. Dynamics: Fluid kinematics and measurements, Viscosity, Flow net, Layer and control of boundary, Lift, Drags, Open channel flow: Principles, Flow controls, Surges, Hydraulic jumps, Networks of pipes.

  • Hydraulic Machines and Hydro Power:

Types of pumps, Vessels, Turbines: Classification, Types and Performance analysis, Power house: Classification and complete layout, Pondage, Storage, Supply control.

  • Hydrology and Water Resources Engineering:

Specification of hydrology: Cycles, Classification: Well and ground water hydrology and related analysis of data, Streams and measurements/gauging, River morphology, Disaster management : Flood and drought, Reservoirs and their capacity.

Water resources and Engineering: Uses of water, basins and potentials of rivers, irrigation systems, assessment of water demands, Resources: Storages and yields, Logging, Drainage designs and Canals, Dams, Weirs, Falls, barrage, Power dissipaters. Distribution and cross drainage, designs and details of head works, Canal designing concepts, Construction and maintaining structures, Measure and analysis of rainfalls, river trainings.

  • Environmental Engineering:
  • Water Supply and Engineering:

Management, Sourcing, Estimations, Quality assurance and standardizations, Testing and treatment techniques of water, Rural and urban water supply( institutional & industrial), Characteristics and sources of water, Water pollution, pollutants and effects, Water demand estimation, drinking water and its standards, Treatment plants, Distribution networks of water.  

  • Waste Water Engineering:

Designing and planning of domestic water wastage, collection of sewage and disposal, Plumbing, Sewage systems: Layout and components, Domestic waste water disposal system: design and planning, Sludge management, Disposals and re –use of treated effluents, industrial waste water treatment and effluent treatment in industrial and institutional sewage management.

  • Solid Waste Management:

Solid wastes: Sources, classification and management system design and planning, Disposal management system, waste re-use applications and utilization by Civil Engineers.

  • Air and Noise pollution and Ecology:

Concepts and methodology.

  • Geo-technical Engineering and Foundation Engineering :
  • Geo-technical Engineering:

Planning & methods of Soil Exploration, Properties and kinds of Soils, Testing and inter- relationships. Seepage and permeability check, Compressibility of soils, Shear resistance and consolidations, Stresses and pressure theory of Earth. Soil distribution, Geo-synthetics: Principles and uses.

  • Foundation Engineering:

Classifications of foundation and selection, Capacity of bearing, Design and testing of Shallow & deep foundations, Settlement analysis, Stability analysis for slopes, Embankments and Dams, Retaining structures: Classification, analysis and designing, ground modifications’ principles.

  • Surveying and Geology:
  • Surveying:

Classification and methodologies, Analysis and tools of measurements of distances, Elevation and directions, Field analyzing and astronomy, GPS(global positioning system), preparation of maps, photogrammetry. Concepts of remote sensing, Surveys of canals, culverts, roads/railway alignments, buildings, setting out of curves.

  • Geology:

Knowledge of geology engineering and applications in projects.

  • Transportation Engineering:
  • Highways:

Planning, design and construction methodologies, Geometric design and alignments. Traffic surveys and control management: Designing of flexible and rigid pavements.


Alignments, Principles of Constructions, Muck disposal, Drain system, ventilation and lighting.

Railways Systems:

Terms, Principles, Practices for designs, planning and maintenance, ventilation and lighting.


Terminology, principles of construction, design layouts and planning.

Airports –

Constructions, Layout, planning & designing.

IES Syllabus of Mechanical Engineering (Paper I) :-

Fluid Mechanics:

Fluids: Concepts and properties, Fluid Statics principles, Manometry, Principles of Buoyancy, Benoulli’s principle, equations and uses, Equations of motion, Incompressible liquids and viscous flow, Flows: Laminar and Turbulent, flows and head losses in pipes.

Thermodynamics and Heat transfer:

Thermodynamics: Processes and systems, Pure substances and properties, Laws of Thermodynamics, Irreversibility, Entropy, Availability. Thermodynamic cycles for energy conversion: Otto, Diesel, Rankine and Dual Cycles, Classification of Gases, Mixtures of gases, Compressibility factor.

Heat transfer and its modes, Conduction of heat: steady and unsteady, Thermal resistance, Convection: free and forced convections and its correlations, Fins, Heat transfer due to radiation and its co-efficient, condensation and boiling, Performance analysis of exchanger.

IC Engines, Refrigeration and Air conditioning:

Engines: engine systems and its components, CI and SI engines, IC Engines: Characteristics and testing, Fuels and types, Emissions, types and emission Control. Refrigeration: Vapour compression, refrigerants and Operation Cycles, Condensers, Compressors, Expansion devices and evaporators, Refrigeration systems: Vapour Jet and Absorption, Thermo electric system and vortex tube refrigeration. Properties and processes in Psychometrics, Comfort charts and Industrial air conditioning, proper  load calculations and heating pumps.

Turbo Machinery:

Pumps: Rotatory and reciprocatory pumps, Turbines: Kaplan and Francis, Pelton wheel, Diagrams of velocity, Principles of Impulse and Reaction, Gas and steam turbines, Jet Propulsion theory: Engines (Pulse jet and Ram jet), Compressors: Reciprocating and Rotary, its theory and Applications

Power Plant Engineering:

Brayton and Rankine cycles with reheat and regeneration processes, Fuels types and their properties, Gas analysis of Fuel, boilers and its working, steam turbines and its components such as condensers, air ejectors, electrostatic precipitators, cooling towers; their theories, structural design, types and uses.

Renewable Sources of Energy:

Solar Thermal Energy and radiation collection: Collectors (flat plate and focusing), materials and performance. Storage of Solar thermal energy, its applications in heating/cooling and generation of power, Solar energy and photovoltaic conversion, Wind Energy and harnessing, Tidal Energy: Principles, methods and uses, Bio-mass energy, Fuel Cells and their working.

IES Syllabus of Mechanical Engineering (Paper II) :-

Engineering Mechanics:

System of forces and its analysis, Centre of Gravity, Friction, Centroids and Dynamics, Compound Stresses and Strains definitions and principles, Diagrams: Bending Moments and Shear Force, Bending Stresses concepts: Slope and Torsion deflection, Cylinders and Spheres.

Engineering Materials:

Concepts of Crystallography, Diagrams: Phase and alloy, Treatment of heat, non metallic materials, ferrous and non ferrous substances, Nano-materials: Properties and testing, Corrosion: Its prevention and control.

Mechanisms and Machines:

Kinds of Kinematics Pair, Kinematic Analysis, Mobility, Inversions Velocity and Analysis of Acceleration: Plane Mechanisms, CAMs: uniform acceleration and retardation principles, cyclic motion, oscillation and its followers; Vibrations: Types, vibrations in un-damped and damped SDOF systems, Transmissibility Ratio, Critical Speed of Shafts, Vibration Isolation. Gears: Tooth profiles and geometry, Laws, Interference, Involute profiling, Gears types: Helical, Spiral and Worm, Gear Trains: Simple, compound & Epicycle, Dynamics, Analysis: Slider and crank mechanisms, computations of turning moment, balancing of masses, Gyroscopes: Effect and needs of Gyroscopic couples in vehicles, Governors.

Design of Machine Elements:

Static and dynamic loading and its designing, Theories (Failures), the S-N diagram, Fatigue strength, principles of riveted, welded and bolted joints. Components: Shafts, Spur gears contact bearings (sliding and rolling), clutch, brakes and flywheels.

Manufacturing, Industrial and Maintenance Engineering:

Casting and forming of metal, Operations: Joining and Machining. Limits, tolerances, fits, computer Integrated manufacturing metrology and inspection, Inventory control and research – CPM-PERT., FMS, Production: planning and Control, Failure & characteristics – Reliability, Failure analysis, Vibration of machine, acquisition of data, Fault Detection and management, Monitoring (vibration and noise), Field Balancing, Analysis: wear and debris, Signature Analysis, NDT Techniques in Monitoring.

Mechatronics and Robotics:

Microprocessors and Microcontrollers: Architecture, programming, I/O, Programmable logic controller Computer interfaces. Working of Sensors and actuators, Hall effect sensor, Piezoelectric accelerometer, Pneumatic and Hydraulic actuators Optical Encoder, Inductosyn, Resolver. Stepper motor, Control Systems and physical systems and its mathematically modelling, Controllability and observability.

Robotics: Classification, Specification, Notation, Kinematics (direct and inverse),  ARM equations and coordinates for 4-axis SCARA Robot.

IES Syllabus of Electrical Engineering (Paper I) :-

Engineering Mathematics:

Matrix theory, Eigen values & Eigen vectors, system of linear equations, solutions of non-linear algebraic equations, differential equations, integral and differential calculus, maxima and minima, partial derivatives, Fourier series, linear, non-linear and partial differential equations, Line, Surface and Volume Integrals, initial and boundary value problems, complex variables, Taylor’s and Laurent’s series, Residue and Sampling Theorem, Fundamentals of probability and statistics theory, complex and random variables, Normal and Poisson distributions, correlation and regression analysis.

Electrical Materials

Materials, crystal structures and defects, insulating materials, ceramic materials, properties and applications of magnetic materials, ferrites, ferro-magnetic materials and its components, solid state physics, conductors; Basics of Nano materials and Superconductors, Photo-conductivity.

Circuit elements, network graph, KCL, KVL, Node and Mesh analysis, ideal current and voltage sources, Thevenin’s, Norton’s, Superposition and Maximum Power Transfer theorems, transient response of DC and AC networks, Sinusoidal steady state analysis, basic filter concepts, two-port networks, three phase circuits, Magnetically coupled circuits, Gauss Theorem, electric field and potential due to point, line, plane and spherical charge distributions, Ampere’s and Biot-Savart’s laws; inductance, dielectrics, capacitance; Maxwell’s equations.

Electrical and Electronic Measurements:

Principles of measurement, accuracy, precision and standards; Bridges and potentiometers; moving coil, moving iron, dynamometer and induction type instruments, measurement of voltage, current, power, energy and power factor, instrument transformers, digital voltmeters and multi-meters, phase, time and frequency measurement, Q-meters, oscilloscopes, potentiometric recorders, error analysis, Basics of sensors, Transducers, basics of data acquisition systems.

Computer Fundamentals:

Number systems, Boolean algebra, arithmetic functions, Basic Architecture, Central Processing Unit, I/O and Memory Organisation; peripheral devices, data represenation and programming, basics of Operating system and networking, virtual memory, file systems; Elements of programming languages, typical examples.

Basic Electronics Engineering:

Basics of Semiconductor diodes and transistors and characteristics, Junction and field effect transistors (BJT, FET and MOSFETS), different types of transistor amplifiers, equivalent circuits and frequency response; oscillators and other circuits, feedback amplifiers. 

IES Syllabus of Electrical Engineering (Paper II) :-

Analog and Digital Electronics:

Operational amplifiers – characteristics and applications, combinational and sequential logic circuits, multiplexers, multi-vibrators, sample and hold circuits, A/D and D/A converters, basics of filter circuits and applications, simple active filters; Microprocessor basics- interfaces and applications, basics of linear integrated circuits; Analog communication basics, Modulation and de-modulation, noise and bandwidth, transmitters and receivers, signal to noise ratio, digital communication basics, sampling, quantizing, coding, frequency and time domain multiplexing, power line carrier communication systems.

Systems and Signal Processing :

Representation of continuous and discrete-time signals, shifting and scaling operations, linear, time-invariant and causal systems, Fourier series representation of continuous periodic signals, sampling theorem, Fourier and Laplace transforms, Z transforms, Discrete Fourier transform, FFT, linear convolution, discrete cosine transform, FIR filter, IIR filter, bilinear transformation.

Control Systems:

Principles of feedback, transfer function, block diagrams and signal flow graphs, steady-state errors, transforms and their applications; Routh-hurwitz criterion, Nyquist techniques, Bode plots, root loci, lag, lead and lead-lag compensation, stability analysis, transient and frequency response analysis, state space model, state transition matrix, controllability and observability, linear state variable feedback, PID and industrial controllers.

Electrical Machines :

Single phase transformers, three phase transformers – connections, parallel operation, auto-transformer, energy conversion principles, DC machines – types, windings, generator characteristics, armature reaction and commutation, starting and speed control of motors, Induction motors – principles, types, performance characteristics, starting and speed control, Synchronous machines – performance, regulation, parallel operation of generators, motor starting, characteristics and applications, servo and stepper motors.

Power Systems :

Basic power generation concepts, steam, gas and water turbines, transmission line models and performance, cable performance, insulation, corona and radio interference, power factor correction, symmetrical components, fault analysis, principles of protection systems, basics of solid state relays and digital protection; Circuit breakers, Radial and ring-main distribution systems, Matrix representation of power systems, load flow analysis, voltage control and economic operation, System stability concepts, Swing curves and equal area criterion. HVDC transmission and FACTS concepts, Concepts of power system dynamics, distributed generation, solar and wind power, smart grid concepts, environmental implications, fundamentals of power economics.

Power Electronics and Drives :

Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs – static characteristics and principles of operation, triggering circuits, phase control rectifiers, bridge converters – fully controlled and half controlled, principles of choppers and inverters, basis concepts of adjustable speed DC and AC drives, DC-DC switched mode converters, DC-AC switched mode converters, resonant converters, high frequency inductors and transformers, power supplies.

IES Syllabus of Electronics & Telecommunication Engineering (Paper I) :-

Basic Electronics Engineering:

Basics of semiconductors; Diode/Transistor basics and characteristics; Diodes for different uses; Junction & Field Effect Transistors (BJTs, JFETs, MOSFETs); Transistor amplifiers of different types, oscillators and other circuits; Basics of Integrated Circuits (ICs); Bipolar, MOS and CMOS ICs; Basics of linear ICs, operational amplifiers and their applications-linear/non-linear; Optical sources/detectors; Basics of Opto electronics and its applications.

Basic Electrical Engineering:

DC circuits-Ohm’s & Kirchoff’s laws, mesh and nodal analysis, circuit theorems; Electro-magnetism, Faraday’s & Lenz’s laws, induced EMF and its uses; Single-phase AC circuits; Transformers, efficiency; Basics-DC machines, induction machines, and synchronous machines; Electrical power sources- basics: hydroelectric, thermal, nuclear, wind, solar; Basics of batteries and their uses.

Materials Science:

Electrical Engineering materials; Crystal structure & defects; Ceramic materials-structures, composites, processing and uses; Insulating laminates for electronics, structures, properties and uses; Magnetic materials, basics, classification, ferrites, ferro/para-magnetic materials and components; Nano materials-basics, preparation, purification, sintering, nano particles and uses; Nano-optical/magnetic/electronic materials and uses; Superconductivity, uses.

Electronic Measurements and Instrumentation:

Principles of measurement, accuracy, precision and standards; Analog and Digital systems for measurement, measuring instruments for different applications; Static/dynamic characteristics of measurement systems, errors, statistical analysis and curve fitting; Measurement systems for non-electrical quantities; Basics of telemetry; Different types of transducers and displays; Data acquisition system basics.

Network Theory:

Network graphs & matrices; Wye-Delta transformation; Linear constant coefficient differential equations- time domain analysis of RLC circuits;

Solution of network equations using Laplace transforms- frequency domain analysis of RLC circuits; 2-port network parameters-driving point & transfer functions; State equations for networks; Steady state sinusoidal analysis.

Analog and Digital Circuits:

Small signal equivalent circuits of diodes, BJTS and FETs; Diode circuits for different uses; Biasing & stability of BJT & JFET amplifier circuits; Analysis/design of amplifier- single/multi-stage; Feedback& uses; Active filters, timers, multipliers, wave shaping, A/D-D/A converters; Boolean Algebra& uses; Logic gates, Digital IC families, Combinatorial/sequential circuits; Basics of multiplexers, counters/registers/ memories /microprocessors, design& applications.

IES Syllabus of Electronics and Telecommunication Engineering (Paper II) :-

Analog and Digital Communication Systems:

Random signals, noise, probability theory, information theory; Analog versus digital communication & applications: Systems-AM, FM, transmitters/receivers, theory/practice/ standards, SNR comparison; Digital communication basics: Sampling, quantizing, coding, PCM, DPCM, multiplexing- audio/video; Digital modulation: ASK, FSK, PSK; Multiple access: TDMA, FDMA, CDMA; Optical communication: fibre optics, theory, practice/standards.

Control Systems:

Classification of signals and systems; Application of signal and system theory; System realization; Transforms& their applications; Signal flow graphs, Routh-Hurwitz criteria, root loci, Nyquist/Bode plots; Feedback systems-open &close loop types, stability analysis, steady state, transient and frequency response analysis; Design of control systems, compensators, elements of lead/lag compensation, PID and industrial controllers.

Computer Organization and Architecture:

Basic architecture, CPU, I/O organisation, memory organisation, peripheral devices, trends; Hardware /software issues; Data representation& Programming; Operating systems-basics, processes, characteristics, applications; Memory management, virtual memory, file systems, protection & security; Data bases, different types, characteristics and design; Transactions and concurrency control; Elements of programming languages, typical examples.

Electro Magnetics:

Vector calculus, Concepts of Maxwell’s equation, Gauss’ and Stokes’ theorems, Medium of Wave propagation, Types of Transmission Lines, Smith’s chart, S-parameters, pulse excitation, uses, impedance matching/transformation, Waveguides, rectangular types, modes, cut-off frequency, dispersion, dielectric types; Radiation pattern, monopoles/dipoles, arrays-active/passive,  gain theory and uses.

Advanced Electronics Topics:

VLSI technology and its characteristics: Process, interconnects, lithography, packaging and testing in VLSI. Design Principles in VLSI, Moore & Mealy circuit design; Pipeline concepts & functions, MUX/ROM/PLA-based design, Design for testability, examples; DSP: Discrete time signals/systems, Digital filters: IIR/FIR types, designs, types of signal processing; Microprocessors & microcontrollers, interrupts, DMA, instruction sets, Interfacing and Embedded systems.

Advanced Communication Topics:

Communication networks: Principles, practices and technologies used.  OSI model and security principles, Scheduling: Basic packets multiplexed streams or scheduling; Type of Cellular networks and Analysis, Protocols (TCP/TCPIP), Terrestrial/space type LOS systems, Communications: Microwave & satellite, system design, block schematics link calculations; Communication Process: Characteristics, Satellites, Systems,  Orbits, Applications, Fibre-optics, System design.

So this is the whole syllabus for the UPSC IES (ESE) Examination. Please read it carefully and prepare according to a study plan you develop with this syllabus.