UPSC IES Syllabus 2024, Topic-wise Syllabus and Exam Pattern

UPSC IES Syllabus 2024

UPSC IES Syllabus 2024: UPSC IES Syllabus 2024 is all about Engineering Subjects. This exam pattern is based on the Engineering disciplines namely Civil, Mechanical, Electrical, and Electronics & Telecommunication Engineering. In Prelims General Studies and Engineering Aptitude is also asked.

The Indian Engineering Services (IES) Prelims exam comprises two objective papers. The first paper, Paper I, encompasses General Studies and Engineering Aptitude, testing candidates on a broad spectrum. The second paper, Paper II, concentrates on the candidate’s chosen engineering stream, delving deeper into their specialized field. Moving on to the UPSC ESE Mains exam, it involves two descriptive papers tailored to the candidate’s selected engineering discipline. These papers in the mains stage allow candidates to showcase their in-depth knowledge and expertise in their chosen engineering field. After that an interview round is conducted to test the personality skill of the candidates.

UPSC IES Syllabus 2024: Overview

Here are some quick insights about the exam and conducting body: –

Exam NameUPSC IES Examination
Conducting BodyUnion Public Service Commission
Notification Released on6th September 2023
Application ModeOnline
Exam ModeOffline
Total Vacancy167
Frequency Annually
Exam Pattern Prelims, Mains and Interview

UPSC IES Syllabus 2024

The UPSC IES Prelims exam comprises two objective papers. The Paper I, General Studies and Engineering Aptitude, holds 200 marks and of 2 hours’ time duration. The Paper II, based on the candidate’s chosen engineering stream, holds 300 marks for 3 hours’ time duration. The UPSC ESE/IES Mains exam consists of two descriptive papers based on the candidate’s selected engineering discipline. Both papers are of 300 marks each and of 3 hours’ time duration each.

Topic wise details of IES Syllabus are: –

Prelims Syllabus for IES/ESE

IES Syllabus Prelims Paper I

General Studies and Engineering Aptitude

This paper will contain questions based on the recent news and events as well as the basics of Engineering. This paper will be common for all candidates. The nature of paper will be objective type.

  • Current issues of national and international importance relating to social, economic and industrial development.
  • Engineering Aptitude covering Logical reasoning and Analytical ability.
  • Engineering Mathematics and Numerical Analysis.
  • General Principles of Design, Drawing, Importance of Safety.
  • Standards and Quality practices in production, construction, maintenance and services.
  • Basics of Energy and Environment: Conservation, environmental pollution and degradation, Climate Change, Environmental impact assessment.
  • Basics of Project Management.
  • Basics of Material Science and Engineering.
  • Information and Communication Technologies (ICT) based tools and their applications in Engineering such as networking, e-governance and technology-based education.
  • Ethics and values in Engineering profession.

Syllabus of both the Papers together for Preliminary Examination (Objective type, Paper–II) and Separately for Main Examination (Conventional type Paper-I and Paper – II): –

IES Syllabus for Civil Engineering: Paper I

Topics Paper I Civil Engineering Syllabus
Structural AnalysisBasics of strength of materials, Types of stresses and strains, bending moments and shear force, the concept of bending and shear stresses; Analysis of determinate and indeterminate structures, rolling loads, Influence Lines, Unit load method & other methods; Free and Forced vibrations of single degree and multi-degree freedom system; Suspended Cables; Concepts and use of Computer-Aided Design
Solid MechanicsElastic constants, Stress, plane stress, Strains, plane strain, Mohr’s circle of stress and strain, Elastic theories of failure, Principal Stresses, Bending, Shear and Torsion
Building MaterialsStone, Lime, Glass, Plastics, Steel, FRP, Ceramics, Aluminum, Fly Ash, Basic Admixtures, Timber, Bricks and Aggregates: Classification, properties and selection criteria; Cement: Types 
Design of Concrete and Masonry structuresLimit state design for bending, shear, axial compression and combined forces; Design of beams, Slabs, Lintels, Foundations, Retaining walls, Tanks, Staircases; Principles of pre-stressed concrete design 
Design of Steel StructuresPrinciples of Working Stress methods, Design of tension and compression members, Design of beams and beam-column connections, built-up sections, Girders, Industrial roofs, Principles of Ultimate load design
Construction Practice, Planning and ManagementConstruction – Planning, Equipment, Site investigation and Management including Estimation with latest project management tools and network analysis for different Types of works; Analysis of Rates of various types of works; Tendering Process and Contract Management, Quality Control, Productivity, Operation Cost; Land acquisition; Labour safety and welfare.

IES Syllabus for Civil Engineering: Paper II

Topics Paper II Civil Engineering Syllabus
Flow of Fluids, Hydraulic Machines and Hydro PowerFluid Mechanics, Open Channel Flow, Pipe Flow, Hydraulic Machines and Hydropower
Hydrology and Water Resources EngineeringHydrological cycle, Ground water hydrology, well hydrology and related data analysis; Streams and their gauging; River morphology; Flood, drought, and their management; Capacity of Reservoirs. Water Resources Engineering: Multipurpose uses of Water, River basins and their potential; Irrigation systems, water demand assessment; Resources, canal and drainage design, Gravity dams, falls, weirs, Energy dissipators, barrage Distribution works, Cross drainage works and headworks and their design; Concepts in canal design, construction & maintenance; River training, measurement, and analysis of rainfall.
Environmental EngineeringWater Supply Engineering, Wastewater Engineering, Solid Waste Management, Air, Noise pollution, and Ecology
Geotechnical Engineering and Foundation EngineeringGeo-technical Engineering: Soil exploration – planning & methods, Properties of soil, classification, various tests and inter-relationships; Permeability & Seepage, Compressibility, consolidation, and Shearing resistance, Earth pressure theories and stress distribution in soil; Properties and uses of geo-synthetics. Foundation Engineering: Types of foundations & selection criteria, bearing capacity, settlement analysis, design and testing of shallow & deep foundations; Slope stability analysis, Earthen embankments, Dams, and Earth retaining structures: types, analysis and design, Principles of ground modifications.
Surveying and GeologyClassification of surveys, various methodologies, instruments & analysis of measurement of distances, elevation, and directions; Field astronomy, Global Positioning System; Map preparation, Survey Layout for culverts, canals, bridges, road/railway alignment, and buildings, Setting out of Curves. Basic knowledge of Engineering geology & its application in projects
Transportation EngineeringHighways – Planning & construction methodology, Alignment, and geometric design; Traffic Surveys and Controls Railways Systems – Terminology, Planning, designs, and maintenance practices; track modernization. Harbours – Terminology, layouts and planning. Airports – Layout, planning & design. Tunnelling – Alignment, methods of construction, disposal of muck, drainage, lighting, and ventilation.

IES Syllabus for Electronics and Telecommunication Engineering: Paper I

Topics Paper II ECT Syllabus
Basic Electronics EngineeringBasics of semiconductors, Junction & Field-Effect Transistors, Transistor amplifiers of different types, oscillators, and other circuits; Basics of Integrated Circuits (ICs); Bipolar, MOS and CMOS ICs, Optical sources/detectors
Analog and Digital CircuitsSmall signal equivalent circuits of diodes, Active filters, timers, multipliers, wave shaping, A/D-D/A converters; Boolean Algebra & uses; Logic gates, Digital IC families, Combinatorial/sequential circuits, BJTS, and FETs, Analysis/design of amplifier single/multi-stage.
Network TheoryNetwork graphs & matrices; Wye-Delta transformation; Linear constant coefficient differential equations- time-domain analysis of RLC circuits; 26 Solution of network equations using Laplace transforms- frequency domain analysis of RLC circuits; 2-port network parameters, State equations for networks; Steady state sinusoidal analysis.
Materials ScienceElectrical 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, nanoparticles and uses; Nano-optical/magnetic/electronic materials.
Electronic Measurements and InstrumentationPrinciples 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.
Basic Electrical EngineeringDC circuits ohm’s & Kirchoff’s laws, mesh and nodal analysis, circuit theorems; Electromagnetism, 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.

IES Syllabus for Electronics and Telecommunication Engineering: Paper II

Topics Paper II ECT Syllabus
Advanced Electronics TopicsVLSI technology: Processing, lithography, interconnects, packaging, testing; VLSI design: Principles, MUX/ROM/PLA-based design, Moore & Mealy circuit design; Pipeline concepts & functions; Design for testability, examples; DSP: Discrete-time signals/systems, uses; Digital filters: FIR/IIR types, design, speech/audio/radar signal processing uses; Microprocessors & microcontrollers, basics, interrupts, DMA, instruction sets, interfacing; Controllers & uses; Embedded systems.
Control SystemsClassification 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.
Advanced Communication TopicsCommunication Networks: Principles /practices /technologies /uses /OSI model/security; Basic packet multiplexed streams/scheduling; Cellular networks, types, analysis, protocols (TCP/TCPIP) Microwave & satellite communication: Terrestrial/space type LOS systems, block schematics link calculations, system design; Communication satellites, orbits, characteristics, systems, uses; Fiber-optic communication systems, block schematics, link calculations, system design.
Analog and Digital Communication SystemsRandom 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: fiber optics, theory, practice/standards.
Electro MagneticsElements of vector calculus, Maxwell’s equations-basic concepts; Gauss’, Stokes’ theorems; Wave propagation through different media; Transmission Lines-different types, basics, Smith’s chart, impedance matching/transformation, S- parameters, pulse excitation, uses; Waveguides-basics, rectangular types, modes, cut-off frequency, dispersion, dielectric types; Antennas-radiation pattern, monopoles/dipoles, gain, arrays-active/passive, theory, uses.
Computer Organization and ArchitectureBasic architecture, CPU, I/O organization, memory organization, peripheral devices, trends; Hardware /software issues; Data representation & Programming; Operating systems-basics, processes, characteristics, applications; Memory management, virtual memory, file systems, protection & security; Databases, different types, characteristics, and design; Transactions and concurrency control; Elements of programming languages, typical examples.

IES Syllabus for Electrical Engineering: Paper I

Topics Paper I Electrical Engineering Syllabus
Engineering MathematicsMatrix theory, Eigen values & Eigen vectors, system of linear equations, Numerical methods for the solution of non-linear algebraic equations and differential equations, probability and statistics fundamentals, Sampling theorem, random variables, Normal and Poisson distributions, correlation and regression analysis, integral calculus, partial derivatives, maxima and minima, Line, Surface and Volume Integrals. Fourier series, linear, non-linear and partial differential equations, initial and boundary value problems, complex variables, Taylor’s and Laurent’s series, residue theorem
Electrical MaterialsElectrical Engineering Materials, crystal structures, and defects, ceramic materials, insulating materials, magnetic materials – basics, properties and applications; ferrites, ferromagnetic materials, and components; basics of solid-state physics, conductors; Photoconductivity; Basics of Nano materials and Superconductors.
Electric Circuits and FieldsCircuit 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, and spherical charge distributions, Ampere’s and Biot-Savart’s laws; inductance, dielectrics, capacitance; Maxwell’s equations, basic filter concepts, two-port networks, three-phase circuits, Magnetically coupled circuits, Gauss Theorem, electric field and potential due to point, line, plane
Electrical and Electronic MeasurementsPrinciples of measurement, accuracy, precision, and standards; Bridges and potentiometers; moving coil, moving iron, dynamometer and induction type instruments, Basics of sensors, Transducers, basics of data acquisition systems, measurement of voltage, current, power, energy and power factor, instrument transformers, digital voltmeters and multimeters, phase, time and frequency measurement, Q-meters, oscilloscopes, potentiometric recorders, error analysis
Computer FundamentalsPeripheral devices, data representation and programming, basics of Operating system, and networking, virtual memory, file systems; Elements of programming languages, typical examples, Number systems, Boolean algebra, arithmetic functions, Basic Architecture, Central Processing Unit, I/O and Memory Organization
Basic Electronics EngineeringBasics 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 for Electrical Engineering: Paper II

Topics Paper II Electrical Engineering Syllabus
Analog and Digital ElectronicsMicroprocessor basics- interfaces and applications, basics of linear integrated circuits; Analog communication basics, Modulation, and demodulation, 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, Operational amplifiers, combinational and sequential logic circuits, multiplexers, multivibrators, sample and hold circuits, A/D and D/A converters, basics of filter circuits and applications, simple active filters
Systems and Signal ProcessingRepresentation of continuous and discrete-time signals, Shifting and scaling operations, linear, time-invariant and causal systems, Discrete Fourier transform, FFT, linear convolution, discrete cosine transform, FIR filter, IIR filter, bilinear transformation, Fourier series representation of continuous periodic signals, sampling theorem, Fourier and Laplace transforms, Z transforms.
Control SystemsRouth-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, Principles of feedback, transfer function, block diagrams and signal flow graphs, steady-state errors, transforms and their applications.
Electrical MachinesSingle-phase transformers, three-phase transformers – connections, parallel operation, auto-transformer, energy conversion principles, DC machines, generator characteristics, armature reaction and commutation, starting and speed control of motors, Induction motors, Synchronous machines.
Power SystemsMatrix 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, 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, distributed generation, solar and wind power, smart grid concepts, environmental implications, fundamentals of power economics.
Power Electronics and DrivesSemiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs, principles of choppers and inverters, basic 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 for Mechanical Engineering: Paper I

Topics Paper I Mechanical Engineering Syllabus
Fluid MechanicsBasic Concepts and Properties of Fluids, Manometry, Fluid Statics, Buoyancy, Equations of Motion, Bernoulli’s equation and applications, Viscous flow of incompressible fluids, Laminar and Turbulent flows, Flow through pipes and head losses in pipes.
Power Plant EngineeringRankine and Brayton cycles with regeneration and reheat, Fuels and their properties, Flue gas analysis, Boilers, steam turbines and other power plant components like condensers, air ejectors, electrostatic precipitators and cooling towers
IC Engines, Refrigeration and Air conditioningVapour compression refrigeration, Refrigerants, and Working cycles, Compressors, Condensers, Evaporators and Expansion devices, SI and CI Engines, Engine Systems and Components, Performance characteristics, and testing of IC Engines; Fuels; Emissions and Emission Control. Other types of refrigeration systems like Vapour Absorption, Vapour jet, thermoelectric, and Vortex tube refrigeration. Psychometric properties and processes, Comfort chart, Comfort and industrial air conditioning, Load calculations, and Heat pumps.
Turbo MachineryReciprocating and Rotary pumps, Pelton wheel, Kaplan and Francis Turbines, velocity diagrams, Impulse and Reaction principles, Steam and Gas Turbines, Theory of Jet Propulsion, Rotary Compressors
Renewable Sources of EnergyPlate and focusing collectors their materials and performance. Solar Thermal Energy Storage, Applications, Bio-mass and Tidal Energy
Thermodynamics and Heat transferThermodynamic systems and processes; properties of pure substance; Zeroth, First and Second Laws of Thermodynamics; Entropy, Irreversibility, and availability; analysis of thermodynamic cycles related to energy conversion: Rankine, Otto, Diesel and Dual Cycles; ideal and real gases; compressibility factor; Gas mixtures. Modes of heat transfer, Steady and unsteady heat conduction, Thermal resistance, Fins, Free and forced convection, Correlations for convective heat transfer, Radiative heat transfer

IES Syllabus for Mechanical Engineering: Paper II

Topics Paper II Mechanical Engineering Syllabus
Engineering MaterialsBasic Crystallography, Alloys and Phase diagrams, Heat Treatment, Ferrous, and Non-Ferrous Metals, Nonmetallic materials, Basics of Nano-materials, Mechanical Properties and Testing, Corrosion prevention and control
Design of Machine ElementsDesign for static and dynamic loading; failure theories; fatigue strength and the S-N diagram; principles of the design of machine elements such as riveted, welded and bolted joints. Shafts, Spur gears, rolling and sliding contact bearings, Brakes and clutches, flywheels.
Manufacturing, Industrial and Maintenance EngineeringFailure concepts and characteristics-Reliability, Failure analysis, Machine Vibration, Data acquisition, Fault Detection, Vibration Monitoring, Field Balancing of Rotors, Noise Monitoring, Wear and Debris Analysis, Signature Analysis, NDT Techniques in Condition Monitoring. Metal casting-Metal forming, Metal Joining, Machining and machine tool operations, Limits, fits and tolerances, Metrology and inspection, computer Integrated manufacturing, FMS, Production planning and Control, Inventory control and operations research – CPM-PERT.
Mechatronics and RoboticsMicroprocessors and Microcontrollers: Architecture, programming, I/O, Computer interfacing, Programmable logic controller. Sensors and actuators, Piezoelectric accelerometer, Hall effect sensor, Optical Encoder, Resolver, Inductosyn, Pneumatic and Hydraulic actuators, stepper motor, Control SystemsMathematical modelling of Physical systems, control signals, controllability and observability. Robotics, Robot Classification, Robot Specification, notation; Direct and Inverse Kinematics; Homogeneous Coordinates and Arm Equation of four Axis SCARA Robot
Engineering MechanicsAnalysis of System of Forces, Friction, Centroid and Centre of Gravity, Dynamics; Stresses and Strains-Compound Stresses and Strains, Bending Moment and Shear Force Diagrams, Theory of Bending Stresses- Slope and deflection-Torsion, Thin and thick Cylinders, Spheres.
Mechanisms and MachinesTypes of Kinematics Pair, Mobility, Inversions, Kinematic Analysis, Velocity and Acceleration Analysis of Planar Mechanisms, CAMs with uniform acceleration and retardation, cycloidal motion, oscillating followers; Vibrations –Free and forced vibration of undamped and damped SDOF systems, Transmissibility Ratio, Vibration Isolation, Critical Speed of Shafts. Gears – Geometry of tooth profiles, Law of gearing, Involute profile, Interference, Helical, Spiral and Worm Gears, Gear Trains- Simple, compound and Epicyclic; Dynamic Analysis – Slider – crank mechanisms, turning moment computations, balancing of Revolving & Reciprocating masses, Gyroscopes –Effect of Gyroscopic couple on automobiles, ships and aircraft, Governors.

UPSC IES/ESE Personality Test/Interview

The Interview round of IES Recruitment process holds 200 marks. This Personality Test will be qualifying in nature. This round will be for those candidates who will clear Prelims and Mains stage. Interview round evaluates candidates’ personality skills such as mental and physical energy, leadership qualities, personality traits, communication skills and Knowledge about current happenings. Having technical knowledge adds cherry on the top. Candidates appearing for interview must be aware about their strong and weak traits.

UPSC IES Prelims Exam Pattern

SubjectDurationMaximum Marks
Paper-I (General Studies and Engineering Aptitude)2 hrs200
Paper-II (Concerned Engineering Subject)3 hrs300

UPSC IES Mains Exam Pattern

SubjectDurationMaximum Marks
Paper-I (Conventional Subject)3 hrs300
Paper-II (Conventional Subject)3 hrs300

UPSC IES/ESE 2024 Preparation Strategy

  • Understand exam patterns and weightage of questions.
  • Go through previous year papers for guidance and smart study decisions.
  • Take help from reference books for strong theory understanding and concept foundation.
  • Practice previous years papers to identify weak areas and to improve speed.
  • General Ability section is crucial, keep general knowledge updated.
  • Prepare for the personal interview as General Ability affects it.


1. How many Papers are there in UPSC IES 2024?

UPSC IES Prelims and Mains exam contains two Papers. In prelims, Paper 1 contains question on the General Studies and Engineering Aptitude and Paper 2 is based on Engineering discipline. While in the Mains exam Paper 1 & 2 contains conventional CE/ME/EC/ECE subjects.

2. What is the nature of the Prelims and Mains of IES Exam 2024?

The Prelims exam is of objective type and the mains papers is of subjective type.

3. Which engineering disciplines are allowed for IES 2024?

There are four engineering streams which are allowed for IES 2024: Civil Engineering, Mechanical Engineering, Electrical Engineering and Electronics and Communication Engineering.

4. Which branch is easy to crack in IES 2024?

With the proper and focused preparation, one can crack any stream allowed for IES 2024.

5. Which topic has the highest weightage in ECE subject?

The highest weightage topics are Material Science, Electrical Machines, Signals and Systems, Control Systems, Power Systems and communication systems.


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