IES Syllabus
Candidates, who are found eligible for Main exam, must check updated IES Syllabus from this page. Union Public Service Commission will conduct IES ESE Pre and Indian Engineering Services (ESE) main exam 2021 on scheduled dates.
IES Exam Details:
 Name of the Organization: Union Public Service Commission (UPSC)
 Name of the Exam: Indian Engineering Services (IES/ESE)
IES Syllabus
What is IES Exam?
Engineering Services Examination (ESE) or Indian Engineering Services (IES) is an entrance examination organized by the Union Public Service Commission (UPSC).
The IES Exam is conducted for the recruitment of engineers for posts of Electrical Engineering, Civil Engineering, Mechanical Engineering and Electronics & Telecommunication Engineering in government sectors of railways, roadways, defense, energy and telecommunication.
IES 2021 Syllabus:
UPSC IES Syllabus for General Studies and Engineering Aptitude
Topics covered in UPSC ESE Syllabus are as follows:
 Current issues of National and International
 Engineering Aptitude covering Logical reasoning and Analytical ability
 Engineering Mathematics and Numerical Analysis
 Basics of Energy and Environment and Project Management
 Basics of Material Science and Engineering
 Standards and Quality practices in production, construction, maintenance and services
 Information and Communication Technologies (ICT) based tools and their applications in Engineering
 Ethics and values in Engineering profession
 General Principles of Design, Drawing, Importance of Safety
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UPSC IES Syllabus for Civil Engineering (CE)
Topics covered in Syllabus of IES Exam are as follows:
Paper I Syllabus  Paper II Syllabus 


UPSC IES Syllabus for Mechanical Engineering (ME)
Topics covered in Syllabus for IES Exam are as follows:
Paper I IES Mechanical Syllabus  Paper II IES ME Syllabus 


UPSC IES Syllabus for Electrical Engineering (EE)
Topics covered in Syllabus for IES Exam are as follows:
Paper I IES EE Syllabus  Paper II Syllabus 


UPSC IES Syllabus for Electronics & Telecommunication Engineering
Topics covered in IES Syllabus 2021 are as follows:
Paper I Syllabus  Paper II Syllabus 


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Detailed UPSC IES Syllabus for Mains
IES Civil Engineering Syllabus
Topics covered in IES Syllabus are as follows:
Paper I IES Civil Syllabus 
Building Materials: stone, lime, glass, plastics, steel, ceramics, aluminum, fly ash, basic admixtures, timber, bricks and classification, properties and selection criteria; cement types, composition, properties, uses, specifications and various tests; lime & cement mortars and concrete properties and various tests; design of concrete mixes, proportioning of aggregates and methods of mix design. 
Design of steel structures: Topics covered in IES Syllabus are as follows: Design of tension and compression members, design of beams and beamcolumn connections principles of working stress methods, builtup sections, girders, industrial roofs, principles of ultimate load design. 
Design of masonry and concrete structures: Design of slabs, beams, foundations, lintels, principles of prestressed concrete design including materials and methods limit state design for bending, shear, axial compression and combined forces; earthquake resistant design of structures; design of masonry structure. 
Solid mechanics: Topics covered in IES ECE Syllabus are as follows: Mohr’s circle of stress and strain, elastic theories of failure, elastic constants, stress, plane stress, strains, plane strain, principal stresses, bending, shear and torsion. 
Structural analysis: analysis of determinate and indeterminate structures; trusses, beams, plane frames; rolling loads, basics of strength of materials, types of stresses and strains, bending moments and shear force, suspended cables; concepts and use of computeraided design. 
Construction practice, planning and management: Topics covered in IES Syllabus are as follows: Analysis of Rates of various types of works; Tendering Process and Contract Management, Quality Control, Productivity, Operation Cost Construction – Planning, Equipment, Site investigation and Management including Estimation with latest project management tools and network analysis for different Types of works; Land acquisition; Labor safety and welfare. 
Paper II Syllabus 
Fluid mechanics, open channel flow, pipe flow: Topics covered in IES Syllabus are as follows: Flow net; Viscosity, Boundary layer and control, Drag, Lift, Principles in open channel flow, Flow controls. Hydraulic jump; Surges; Pipe networks, Fluid properties; Dimensional Analysis and Modeling; Fluid dynamics including flow kinematics and measurements 
Hydraulic machines and hydropower: Topics covered in IES Syllabus are as follows: Powerhouse – classification and layout, storage, pondage, control of supply, Various pumps, Air vessels, Hydraulic turbines – types, classifications & performance parameters; 
Hydrology: Topics covered in IES Syllabus are as follows: Groundwater hydrology, data analysis; Streams and their gauging; River morphology, Hydrological cycle, Flood, drought; Capacity of Reservoirs. 
Water resources engineering: Topics covered in IES Syllabus are as follows: Waterlogging, canal and drainage design, Gravity dams, falls, weirs, Energy dissipaters, barrage Distribution works, Cross drainage works and headworks and their design; Multipurpose uses of Water, River basins and their potential; Irrigation systems, water demand assessment; Concepts in canal design, construction & maintenance; River training, measurement and analysis of rainfall. 
Water supply engineering: Rural, Institutional and industrial water supply, Sources, quality standards and testing of water and their treatment; Physical, chemical and biological characteristics and sources of water, Pollutants in water and its effects, Estimation of water demand; Drinking water Standards, Water Treatment Plants, Water distribution networks. 
Wastewater engineering: Planning & design of domestic wastewater, sewage collection and disposal; Plumbing Systems. Components of sewerage system; Planning of Domestic Wastewater disposal system; Sludge management including treatment, disposal and reuse of treated effluents; Industrial waste waters and Effluent Treatment Plants including institutional and industrial sewage management. 
Air and noise pollution and ecology: Topics covered in IES Syllabus are as follows: sources and effects of air pollution, monitoring of air pollution; noise pollution and standards; ecological chain and balance, environmental assessment. 
Foundation engineering: types of piles and their design and layout, types of foundations, selection criteria, laboratory and field tests; foundations on expansive soils, swelling and its prevention, foundation on swelling soils. 
Surveying: Topics covered in IES Syllabus are as follows: Field astronomy, Global Positioning System; Map preparation; Photogrammetry; Remote sensing concepts; Classification of surveys, various methodologies, instruments & analysis of measurement of distances, elevation and directions; Survey Layout for culverts, canals, bridges, road/railway alignment and buildings. 
Transportation engineering: Topics covered in IES Syllabus 2021 are as follows: Harbors – Terminology, layouts and planning. Airports – Layout, planning & design, Highways Alignment and geometric design, Planning & construction methodology; Traffic Surveys and Controls; Principles of Flexible and Rigid pavements design. Tunneling – Alignment, drainage, methods of construction, lighting and ventilation. Railways Systems –Planning, designs and maintenance practices, track modernisation. 
UPSC IES Syllabus for Mechanical Engineering
Topics covered in IES Syllabus 2021 are as follows:
Paper I Syllabus 
Thermodynamics and Heat transfer: Gas mixtures, Modes of heat transfer, Steady and unsteady heat conduction, Thermal resistance, Fins, Free and forced convection, Correlations for convective heat transfer, Radioactive heat transfer – Radiation heat transfer coefficient; boiling and condensation, Heat exchanger performance analysis, Thermodynamic systems and processes; properties of pure substance; First and Second Laws of Thermodynamics; Entropy, Irreversibility and availability; analysis of thermodynamic cycles; ideal and real gases; compressibility factor 
IC Engines, Refrigeration and Airconditioning: Topics covered in IES Syllabus 2021 are as follows: SI and CI Engines, Engine Systems and Components, Performance and testing of IC Engines; Fuels; Emissions and Emission Control. Vapor compression refrigeration, Refrigerants and Working cycles, Compressors, Condensers, Evaporators and Expansion devices, refrigeration systems like Vapor Absorption, Vapor jet, thermoelectric and Vortex tube refrigeration. Psychometric properties and processes, Comfort and industrial air conditioning, Load calculations and Heat pumps. 
Fluid Mechanics: Topics covered in IES Syllabus 2021 are as follows: Basic Concepts and Properties, Fluid Statics, Buoyancy, Equations of Motion, Bernoulli’s equation and applications, the Viscous flow of incompressible fluids, Laminar and Turbulent flows, Flow through pipes and head losses in pipes. 
Turbo Machinery: Topics covered in IES Syllabus 2021 are as follows: Kaplan and Francis Turbines, velocity diagrams, Impulse and Reaction principles, Reciprocating and Rotary pumps, Steam and Gas Turbines, Theory of Jet Propulsion – Pulse jet and Ram Jet Engines, Reciprocating and Rotary Compressors. 
Power Plant Engineering: Topics covered in IES Syllabus 2021 are as follows: Rankine and Brayton cycles with regeneration and reheat, Boilers, steam turbines and other power plant components like condensers, air ejectors, electrostatic precipitators, Fuels and their properties, Flue gas analysis and cooling towers – their theory and design, types and applications; 
Renewable Sources of Energy: Topics covered in IES Syllabus 2021 are as follows: Solar Thermal Energy collection – Flat Plate and focusing collectors their materials and performance, Solar Radiation, Solar Photovoltaic Conversion, Thermal Energy Storage. 
Paper II Syllabus 
Engineering Mechanics: Topics covered in IES Syllabus 2021 are as follows: Analysis of System of Forces, Centroid and Centre of Gravity Friction, Dynamics; Stresses and StrainsCompound Stresses and Strains, Bending Moment and Shear Force Diagrams, Theory of Bending Stresses, Thin and thick Cylinders, Spheres. 
Mechanisms and Machines: Types of Kinematics Pair, Kinematic Analysis, Velocity and Acceleration Analysis of Planar Mechanisms, Mobility, Inversions, CAMs with uniform acceleration and retardation, cycloidal motion, oscillating followers;, Critical Speed of Shafts. Dynamic Analysis – Slider – crank mechanisms, turning moment computations, balancing of Revolving & Reciprocating masses, Gyroscopes –Effect of the Gyroscopic couple on automobiles, ships and aircrafts, Governors. 
Design of Machine Elements: Topics covered in IES Syllabus 2021 are as follows: Design for static and dynamic loading; Shafts, Spur gears, rolling and sliding contact bearings, Brakes and clutches, flywheels failure theories; fatigue strength and the SN diagram and principles of the design of machine elements. 
Mechatronics and Robotics: Microprocessors and Microcontrollers: Sensors and actuators, Piezoelectric accelerometer, Hall effect sensor, Optical Encoder, Resolver, Pneumatic and Hydraulic actuators, stepper motor, Control Systems Mathematical modelling of Physical systems, control signals, controllability and observability. Architecture, programming, Computer interfacing, Programmable logic controller. Robotics, Robot Classification, Robot Specification, Direct and Inverse Kinematics. 
UPSC IES Syllabus for Electrical Engineering
Paper I Syllabus 
Engineering Mathematics: Topics covered in IES Syllabus are as follows: Matrix theory, Numerical methods for solution of nonlinear algebraic equations and differential equations, integral calculus, Eigen values & Eigen vectors, system of linear equations partial derivatives, maxima and minima, Line, Taylor’s and Laurent’s series, residue theorem, probability and statistics fundamentals, Sampling theorem, random variables, Surface and Volume Integrals. Fourier series, linear, nonlinear and partial differential equations, initial and boundary value problems, complex variables, Normal and Poisson distributions, and correlation and regression analysis. 
Electrical Materials: Topics covered in IES Syllabus are as follows: Electrical Engineering Materials, ferrites, ferromagnetic materials and components; basics of solid state physics, crystal structures and defects, ceramic materials, insulating materials, magnetic materials – basics, properties and applications; conductors; Photoconductivity; Basics of Nanomaterials and Superconductors. 
Electric Circuits and Fields: Topics covered in IES Syllabus are as follows: Circuit elements, network graph, KCL, KVL, Node and Mesh analysis, ideal current and voltage sources, Thevenin’s, Sinusoidal steady state analysis, basic filter concepts, twoport networks, three phase circuits, Norton’s, Superposition and Maximum Power Transfer theorems, transient response of DC and AC networks, Magnetically coupled circuits, Gauss Theorem, electric field and potential due to point, line, plane and spherical charge distributions, Ampere’s and BiotSavart’s laws; inductance, dielectrics, capacitance; Maxwell’s equations. 
Electrical and Electronic Measurements: Topics covered in IES Syllabus are as follows: Principles of measurement, accuracy, precision and standards; Bridges and potentiometers; moving coil, instrument transformers, digital voltmeters and multimeters, phase, time and frequency measurement, moving iron, dynamometer and induction type instruments, measurement of voltage, current, power, energy and power factor, Qmeters, oscilloscopes, error analysis, Basics of sensors, Transducers, basics of data acquisition systems 
Computer Fundamentals: Topics covered in IES Syllabus are as follows: Number systems, arithmetic functions, Basic Architecture, Boolean algebra, Central Processing Unit, I/O and Memory Organization; virtual memory, peripheral devices, data representation and programming, basics of Operating system and networking, file systems; Elements of programming languages, typical examples. 
Basic Electronics Engineering: Topics covered in IES Syllabus are as follows: Basics of Semiconductor diodes and transistors and characteristics, equivalent circuits and frequency response; oscillators and other circuits, Junction and field effect transistors, different types of transistor amplifiers, feedback amplifiers. 
Paper II Syllabus 
Analog and Digital Electronics: Topics covered in IES Syllabus 2021 are as follows: Operational amplifiers – characteristics and applications, combinational and sequential logic circuits, multiplexers, multivibrators, sample and hold circuits, A/D and D/A converters, 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. 
Control Systems: Topics covered in IES Syllabus 2021 are as follows: Principles of feedback, transfer function, block diagrams and signal flow graphs, steadystate errors, transforms and their applications; RouthHurwitz criterion, Nyquist techniques, Bode plots, root loci, lag, lead and leadlag 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. 
Systems and Signal Processing: Topics covered in IES Syllabus 2021 are as follows: Representation of continuous and discretetime signals, shifting and scaling operations, linear, timeinvariant 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. 
Power Electronics and Drives: Topics covered in IES Syllabus 2021 are as follows: 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, basic concepts of adjustable speed dc and ac drives, DCDC switched mode converters, DCAC switched mode converters, resonant converters, high frequency inductors and transformers, power supplies. 
Electrical Machines: Topics covered in IES Syllabus 2021 are as follows: Single phase transformers, three phase transformers – connections, parallel operation, autotransformer, 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 ringmain 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. 
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IES Admit Card  IES Exam Details 
UPSC IES Syllabus for Electronics & Telecommunication Engineering
Paper I Syllabus 
Basic Electronics Engineering: Basics of semiconductors; Diode/Transistor basics and characteristics; Diodes for different uses; Junction & Field Effect Transistors; 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 applicationslinear/nonlinear; Optical sources/detectors; Basics of Optoelectronics and its applications. 
Basic Electrical Engineering: Topics covered in IES Syllabus 2021 are as follows: DC circuitsOhm & Kirchoff’s laws, mesh and nodal analysis, circuit theorems; Electromagnetism, Transformers, efficiency; BasicsDC machines, induction machines, and synchronous machines; Electrical power sources basics: hydroelectric, thermal, nuclear, wind, solar; Basics of batteries and their uses. Faraday’s & Lenz’s laws, induced EMF and its uses; Singlephase AC circuits; 
Materials Science: Electrical Engineering materials; Crystal structure & defects; Ceramic materialsstructures, composites, processing and uses; Magnetic materials, basics, classification, ferrites, Ferro/paramagnetic materials and components; Insulating laminates for electronics, structures, properties and uses; Nano materialsbasics, preparation, purification, sintering, nanoparticles and uses; Nanooptical/magnetic/electronic materials and uses; Superconductivity, uses. 
Network Theory: Network graphs & matrices; WyeDelta transformation; Linear constant coefficient differential equations time domain analysis of RLC circuits; 2port network parametersdriving point & transfer functions; State equations for networks; Steady state sinusoidal analysis. Solution of network equations using Laplace transforms frequency domain analysis of RLC circuits 
Electronic Measurements and Instrumentation: Principles of measurement, accuracy, precision and standards; Analog and Digital systems for measurement, errors, statistical analysis and curve fitting; Measurement systems for nonelectrical quantities; Basics of telemetry; Different types of transducers and displays; measuring instruments for different applications; Static/dynamic characteristics of measurement systems, Data acquisition system basics. 
Analog and Digital Circuits circuits for different uses; Biasing & stability of BJT & JFET amplifier circuits; Small signal equivalent circuits of diodes; Diode wave shaping, A/DD/A converters; Boolean Algebra& uses; Analysis/design of amplifier single/multistage; Feedback& uses; Active filters, timers, multipliers Logic gates, Digital IC families, Combinatorial/sequential circuits; Basics of multiplexers, counters/registers/ memories /microprocessors, design& applications. 
Paper II Syllabus 
Analog and Digital Communication Systems: Topics covered in IES Syllabus 2021 are as follows: Random signals, Systems AM, FM, transmitters/receivers, theory/practice/ standards, noise, probability theory, information theory; Analog versus digital communication & applications:, SNR comparison; Digital communication basics: Sampling, quantizing, coding, PCM, DPCM, multiplexingaudio/video; Digital modulation: ASK, FSK, PSK; Multiple access: TDMA, FDMA, CDMA; Optical communication: fibre optics, theory, practice/standards. 
Electro Magnetics: Topics covered in IES Syllabus 2021 are as follows: Elements of vector calculus, Transmission Linesdifferent types, basics, Smith’s chart, impedance matching/transformation, Maxwell’s equationsbasic concepts; Gauss’, Stokes’ theorems; Wave propagation through different media; Sparameters, pulse excitation, uses; Waveguidesbasics, rectangular types, modes, cutoff frequency, dispersion, dielectric types; Antennasradiation pattern, monopoles/dipoles, gain, arraysactive/passive, theory, uses. 
Advanced Electronics Topics: VLSI technology: Processing, lithography, interconnects, packaging, testing; VLSI design: Principles, MUX/ROM/PLAbased design, Moore & Mealy circuit design; Pipeline concepts & functions; Design for testability, examples; Microprocessors & microcontrollers, basics, interrupts, DMA, instruction sets, interfacing; Controllers & uses; Embedded systems. DSP: Discretetime signals/systems, uses; Digital filters: FIR/IIR types, design, speech/audio/radar signal processing uses; 
Control Systems: Topics covered in IES Syllabus 2021 are as follows: Classification of signals and systems; Application of signal and system theory; System realisation; Transforms & their applications; stability analysis, steady state, transient and frequency response analysis; Design of control systems, compensators, elements of lead/lag compensation, PID and industrial controllers. Signal flow graphs, RouthHurwitz criteria, root loci, Nyquist/Bode plots; Feedback systemsopen &close loop types 
Computer Organization and Architecture: Topics covered in IES Syllabus 2021 are as follows: Basic architecture, CPU, I/O organisation, memory organisation, peripheral devices, trends; Databases, different types, characteristics and design; Transactions and concurrency control; Elements of programming languages, typical examples. 
Advanced Communication Topics: Topics covered in IES Syllabus 2021 are as follows: Communication networks: Principles /practices /technologies /uses /OSI model/security; Basic packet multiplexed streams/scheduling; Cellular networks, types, analysis, protocols (TCP/TCPIP); Microwave & satellite communication: block schematics link calculations, orbits, Terrestrial/space type LOS systems, system design, characteristics, systems, uses; Fibreoptic communication systems, Communication satellites, block schematics, link calculations, system design. 
Download: UPSC ESE Syllabus PDF
IES Exam Pattern 2021
Stage I Preliminary:
Subject  Duration  Maximum Marks 
PaperI (General Studies and Engineering Aptitude)  2 hrs.  200 
PaperII (Engineering Subject)  3 hrs.  300 
Stage II–Mains:
Subject  Duration  Maximum Marks 
PaperI ( Engineering Subject )  3 hrs.  300 
PaperII (Engineering Subject)  3 hrs.  300 
Stage III Personality Test:
It includes a Personal Interview with 200 Marks. The candidates who qualify for the Preliminary exam will be eligible for the Mains Exam and those who clear Mains exam will be further called for Personality Test.
Benefits of IES Syllabus 2021:
 Candidates can check below the benefits of knowing UPSC IES Syllabus
 IES Syllabus covers all the mandatory topics for Preliminary and Mains examination.
 IES Syllabus 2021 will help in preparing for the exam in organized manner.
 UPSC IES Syllabus will help candidates to segregate the most important and least important topics as per previous years question paper trend.
 Contenders, if you are aware of the topics given in IES syllabus 2021, then it will get Confidence in solving problems in exam.
Highlights of IES 2021 Syllabus:
 The standard of paper in General Studies and Engineering Aptitude will be of graduation in Engineering or Science level.
 The UPSC ESE Syllabus has been divided as per different discipline – Electrical, Mechanical, Civil and Electronics and Telecommunication.
 The standard of Engineering Specific paper will be based on the subjects candidates have studied in their four or five year engineering graduation programme.
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IES ESE Syllabus Download:
Here on this page, we have provided IES Exam Syllabus for all subjects: ECE, ME, Civil, EE. Engineering Services Exam Syllabus contains subjectwise topics for both Papers (Preliminary and Main).With the help of IES ESE Syllabus, applicants can make their study plan accordingly and follow it.
So it is all about the IES Syllabus 2021, you can download the UPSC ESE Syllabus PDF format from this web portal which is recruitmentresult.com
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