IES Syllabus 2020 for Engineering Services, Exam Pattern and Exam Dates

IES Syllabus 2020 - IES syllabus for engineering services exam is released by UPSC along with IES notification. Along with IES syllabus, UPSC also mentions the IES exam pattern, marking scheme. IES Syllabus for 2020 exam is graduation level from the engineering stream. The IES syllabus is based on the engineering discipline of the candidates respective engineering graduate stream.

The IES Syllabus 2020 is categorised based on the engineering discipline:

  1. Mechanical Engineering
  2. Electrical Engineering
  3. Civil Engineering
  4. Electronics and Telecommunication Engineering

Latest: IES Application Form 2020 is available now.

IES Syllabus 2020 - Highlights

  • The Preliminary examination of IES comprises of two papers - Paper-I (General Studies and Engineering Aptitude) and Paper-II (Civil Engineering/Mechanical Engineering/Electrical Engineering/Electronics and Telecommunication Engineering).
  • The Mains exam consists of two papers related to engineering specific disciplines.
  • Based on the engineering background of the student, syllabus of IES 2020 has been divided into different disciplines, namely Electrical, Mechanical, Civil and Electronics and Telecommunication.
  • General Studies and Engineering Aptitude section will cover subjects from graduation in Engineering and Science level.
  • Engineering specific paper will include subjects studied by engineering students in their graduation.

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IES Exam Paper

IES Syllabus PDF Download

IES General Studies and Engineering Aptitude Syllabus

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IES Mechanical Engineering Syllabus

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IES Electrical Engineering Syllabus

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IES Civil Engineering Syllabus

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IES Electronics and Telecommunications Engineering

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IES Exam Pattern

Candidates preparing for IES exam should have a clear understanding about the exam pattern of engineering services exam. IES exam is conducted in 3 stages - Prelims, Mains and Interview. 

  • The prelims exam is the screening test consists of two objective papers; Paper 1 - General Studies and Engineering aptitude (200 Marks - 2 Hours) and Paper 2 - Engineering Paper (EE/ME/EC/CE) of 300 marks (3 hours)
  • The mains exam is the conventional exam consists of two papers; Paper 1 - Engineering Paper 1 - EE/ME/EC/CE (300 Marks - 3 Hours) and Engineering Paper Paper 2 -  EE/ME/EC/CE (300 marks - 3 hours)
  • IES interview is the final phase of the IES exam, conducted for 200 marks.
Read More: IES Exam Pattern

IES Syllabus 2020

Candidates preparing for IES exam 2020 should understand the detailed IES Syllabus provided by Union Public Service Commission (UPSC). In this Syllabus for IES exam, you will get syllabus topics for:

  1. Mechanical Engineering
  2. Electrical Engineering
  3. Civil Engineering
  4. Electronics and Telecommunication Engineering
  5. General Studies and Engineering Aptitude 

IES Syllabus - General Studies and Engineering Aptitude

The standard of paper in IES prelims General Studies and Engineering Aptitude will be such as may be expected of an Engineering/Science Graduate. The standard of papers in other subjects will approximately be that of an Engineering Degree Examination of an Indian University.

IES General  Studies and Engineering  Aptitude Syllabus Topics 

Current  issues of  national and  international importance

Basics of Energy and Environment

Engineering Aptitude

Basics of Project Management

Engineering Mathematics and Numerical Analysis

Basics of Material Science and Engineering

General  Principles  of Design, Drawing, Importance  of Safety

ICT based  tools and their applications

Standards  and Quality  practices in  production, construction,  maintenance and services

Ethics and values in the Engineering profession

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

Note: The paper in General Studies and Engineering Aptitude will include Knowledge of relevant topics as may be expected from an engineering graduate, without special study. Questions from all the 10 topics mentioned above shall be set. Marks for each Topic may range from 5% to 15% of the total marks in the paper. 

IES Syllabus - Mechanical Engineering

Mechanical Engineering is one of the oldest and most popular engineering disciplines in IES exam. The subject code of Mechanical branch is ME. The questions in IES prelims are objective in nature and in IES mains conventional questions are asked. The syllabus for Mechanical engineering for IES exam is the same only the nature of questions varies.

The IES syllabus of Mechanical Engineering (ME) of both the papers are provided below:

IES Syllabus 2020 - ME Paper 1

Fluid Mechanics

Basic 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.

Thermodynamics and Heat transfer

Thermodynamic  systems and processes;  properties of pure substances;  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  – Radiation heat  transfer co‐efficient;  boiling and condensation,  Heat exchanger performance analysis. 

IC Engines, Refrigeration and Air conditioning

SI and CI Engines, Engine Systems and Components, Performance characteristics and testing of IC Engines; Fuels; Emissions and Emission Control. 

Vapour compression refrigeration, Refrigerants and Working cycles, Compressors, Condensers, Evaporators and Expansion devices, Other types of refrigeration systems like Vapour Absorption, Vapour jet, thermo electric and Vortex tube refrigeration. 

Psychometric properties and processes, Comfort chart, Comfort and industrial air conditioning, Load calculations and Heat pumps.

Turbo Machinery

Reciprocating and Rotary pumps, Pelton wheel, Kaplan and Francis Turbines, velocity diagrams, Impulse and Reaction principles, Steam and Gas Turbines 

Theory of Jet Propulsion – Pulse jet and RamJet Engines, Reciprocating and Rotary Compressors – Theory and Applications

Power Plant Engineering

Rankine 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 – their theory and design, types and applications;

Renewable Sources of Energy

Solar Radiation, Solar Thermal Energy collection ‐ Flat Plate and focusing collectors their materials and performance. 

Solar Thermal Energy Storage, Applications – heating, cooling and Power Generation; Solar Photovoltaic Conversion; 

Harnessing of Wind Energy, Bio‐mass and Tidal Energy – Methods and Applications, Working principles of Fuel Cells.

IES Syllabus 2020 - ME Paper 2

Engineering Mechanics

Analysis 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.

Engineering Materials

Basic Crystallography, Alloys and Phase diagrams, Heat Treatment, Ferrous and Non Ferrous Metals, Non metallic materials 

Basics of Nano‐materials, Mechanical Properties and Testing, Corrosion prevention and control

Mechanisms and Machines

Types 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 aircrafts, Governors.

Design of Machine Elements

Design 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,  flywheel. 

Manufacturing ,Industrial and Maintenance Engineering

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. Failure 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.

Mechatronics and Robotics

Microprocessors 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 Systems‐ Mathematical modeling 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.

Books for IES Mechanical Engineering

S. No.




Engineering Thermodynamics

a) PK Nag b) Cengle & Boles


IC Engine

a)ML Mathur and RP Sharma b) V.Ganeshan


Gas Turbine and Propulsive Systems

a) PR Khajuria & SP Dubey b) V.Ganeshan


Fluid Mechanics

a) Modi & Seth b)RK Bansal


Compressible Flow

a) SM Yahya


Heat and Mass Transfer

a) JP Hollman b) RC Sachdeva


Refrigeration and Air Conditioning

a) CP Arora b) Domkundwa


Fluid Machinery

a) JagdishLal b) RK Bansal


Theory of Machines

a) V.P Singh b) Malik &Ghosh


Mechanical Vibration

a) Grover b) V.P Singh


Machine Design

a) Shigley b) VB Bhandari


Material Science

a) WD Callister b) IP Singh


Production Engineering

a) Kalpkjian & Schmid b) Amitabh Ghosh & AK Malik


Industrial Engineering

a) O P Khanna b) Buffa & Sarin


Operations Research

a) Kanti & Swarup b) D.S Hira


Strength of Materials

a) Gere & Timoshenko b) BC Punamia

Know more: Download IES Mechanical Engineering Booklist

IES Syllabus - Electrical Engineering

Electrical Engineering is popular engineering disciplines in IES exam. The subject code of Electrical branch is EE. The questions in IES prelims are objective in nature and in IES mains conventional questions are asked. The syllabus for Electrical engineering for IES exam is the same only the nature of questions varies.

The IES syllabus of Electrical Engineering (EE) of both the papers are provided below:

IES Syllabus 2020 - EE Paper 1 

Engineering Mathematics

Matrix theory, Eigen values & Eigen vectors, system of linear equations, Numerical methods for solution of non‐linear algebraic equations and differential equations, 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, probability and statistics fundamentals, Sampling theorem, random variables, Normal and Poisson distributions, correlation and regression analysis.

Electrical Materials

Electrical Engineering Materials, crystal structures and defects, ceramic materials, insulating materials, magnetic materials – basics, properties and applications; 

ferrities, ferro‐magnetic materials and components; basics of solid state physics, conductors; 

Photo‐conductivity; Basics of Nano materials and Superconductors.

Electric Circuits and Fields

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 representation 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 2020 - EE Paper 2

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.

Books for IES Electrical Engineering

S. No.




Network Analysis

Van Valkenburg



Willain H. Haytn


Electrical Machinery

PS Bhimra


Electrical Machines

Nagrath & Kothari


Power System Engg.

Nagrath & Kothari


Electric Power Systems

CL Wadhwa


Automatic Control System

Benjamin C. Kuo


Control System Engg.

Nagrath & Gopal


Electrical & Electronic Measurement and Instrumentation

AK Sawhney


Integrated Electronics

a) Milman & Halkias b) Millma & Grobel


Digital Logic & Computer Design

Morris Mano


Power Electronics

PS Bhimra

Know more: Download IES Electrical Engineering Booklist

IES Syllabus - Civil Engineering

Civil Engineering is one of the oldest and most popular engineering disciplines in IES exam. The subject code of Civil branch is CE. The questions in IES prelims are objective in nature and in IES mains conventional questions are asked. The syllabus for Civil engineering for IES exam is the same only the nature of questions varies.

The IES syllabus of Civil Engineering (CE) of both the papers are provided below:

IES Syllabus 2020 - CE  Paper 1

Building Materials

Stone, Lime, Glass, Plastics, Steel, FRP, Ceramics, Aluminum, Fly Ash, Basic Admixtures, Timber, Bricks 

Aggregates: Classification, properties and selection criteria; 

Cement: Types, Composition, Properties, Uses, Specifications and various Tests; Lime & Cement Mortars 

Concrete: Properties and various Tests; 

Design of Concrete Mixes: Proportioning of aggregates and methods of mix design

Solid Mechanics

Elastic constants, Stress, plane stress, Strains, plane strain, Mohr’s circle of stress and strain

Elastic theories of failure, Principal Stresses, Bending, Shear and Torsion.

Structural Analysis

Basics of strength of materials, Types of stresses and strains, Bending moments and shear force, concept of bending and shear stresses; 

Analysis of determinate and indeterminate structures; 

Trusses, beams, plane frames; 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.

Design of Steel Structures

Principles 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.

Design of Concrete and Masonry structures

Limit 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 including materials and methods; 

Earthquake resistant design of structures; Design of Masonry Structure.

Construction Practice, Planning and Management

Construction ‐ 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 2020 - CE  Paper 2

Flow of Fluids, Hydraulic Machines and Hydro Power

Fluid Mechanics, Open Channel Flow, Pipe Flow

Fluid properties; Dimensional Analysis and Modeling; 

Fluid dynamics including flow kinematics and measurements; 

Flow net; Viscosity, Boundary layer and control, Drag, Lift, Principles in open channel flow, Flow controls. 

Hydraulic jump; Surges; Pipe networks.

Hydraulic Machines and Hydro power

Various pumps, Air vessels, Hydraulic turbines – types, classifications & performance parameters; 

Power house – classification and layout, storage, pondage, control of supply.

Hydrology and Water Resources Engineering

Hydrological 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 ‐ storages and their yields; Water logging, canal and drainage design, Gravity dams, falls, weirs, Energy dissipaters, barrage Distribution works, Cross drainage works and head‐works and their design; 

Concepts in canal design, construction & maintenance; River training, measurement and analysis of rainfall.

Environmental Engineering

Water Supply Engineering

Sources, Estimation, quality standards and testing of water and their treatment; 

Rural, Institutional and industrial water supply; 

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.

Waste Water Engineering

Planning & design of domestic waste water, sewage collection and disposal; 

Plumbing Systems. Components and layout of sewerage system; Planning & design of Domestic Waste‐water disposal system; 

Sludge management including treatment, disposal and re‐use of treated effluents; 

Industrial waste waters and Effluent Treatment Plants including institutional and industrial sewage management.

Solid Waste Management

Sources & classification of solid wastes along with planning & design of its management system; 

Disposal system, Beneficial aspects of wastes and Utilization by Civil Engineers.

Air, Noise pollution and Ecology

Concepts & general methodology

Geotechnical Engineering and Foundation Engineering

Geotechnical 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 Geology


Classification  of surveys, various  methodologies, instruments  & analysis of measurement  of distances, elevation and  directions;  

Field  astronomy,  Global Positioning  System; Map preparation;  

Photogrammetry;  Remote sensing concepts;  

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 Engineering

Highways ‐ Planning & construction methodology, Alignment and geometric design; Traffic Surveys and Controls; Principles  of Flexible and Rigid pavements design.  

Tunneling ‐ Alignment, methods of construction, disposal of muck, drainage, lighting and ventilation.  

Railways Systems – Terminology, Planning, designs and maintenance practices; track modernization.  

Harbours – Terminology, layouts and planning.   

Airports – Layout, planning & design.  

Books for IES Civil Engineering

S. No.




Strength of Materials

a) Gere and Temoshenko b) B C Punamia


Structural Analysis

a) Negi b) S Ramamurtham c) C K Vang


Concrete Structures

a) Punamia & Jain b) H J Shah


Steel Structures

a) Duggal


Soil Mechanics & Foundation Engg.

a) Ranjan & Rao b) Venkat Ramaiha c) S K Garg


Fluid Mechanics and Hydraulics

a) Modi & Seth b) R K Bansal c) Subramanyam



a) Subramanyam



a) S K Garg


Highway Engg.

a) Khanna & Jasto b) Kadiyali

Know more: Download IES Civil Engineering Booklist

IES Syllabus - Electronics and Telecommunications Engineering

The Electronics and Telecommunications Engineering is popular engineering disciplines in IES exam. The subject code of Electrical branch is EC. The questions in IES prelims are objective in nature and in IES mains conventional questions are asked. The syllabus for Electronics and Telecommunications Engineering for IES exam is the same only the nature of questions varies.

The IES syllabus of Electronics and Telecommunications Engineering (EC) of both the papers are provided below:

IES Syllabus 2020 - EC Paper 1

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 2020 - EC Paper 2

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; 

Databases, different types, characteristics and design; Transactions and concurrency control; 

Elements of programming languages, typical examples.

Electro Magnetics

Elements 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

Advanced Electronics Topics

VLSI 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.

Advanced Communication Topics

Communication 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; Fibre‐optic communication systems, block schematics, link calculations, system design.

Books for IES Electronics and Telecommunications Engineering

S. No.




Network Analysis

a) Van Valkenburg b) Chakrabarti


Electromagnetic Waves & Radiating Systems

a) Jardon & Balmain b) JD Kraus


Integrated Circuits

K.R. Botkar


Op. Amps & Linear Integrated Circuit



Digital Logic & Computer Design

Moris Mano


Automatic Control System

a)Benjamin C. Kuo b) B.S Manke


Control System Engg.

Nagrath & Gopal


Principle of Communication System

a) Taub & Schilling b) J.B Guptac) A. Bruu Carlson


Integrated Electronics

a) Jacob Milman & C. Halkias b) Millman & Grabel


Network and Systems

D. Roy Choudhary


Signals and System

a) Oppehum, Willsky & Nacob b) Sanjay Sharma

Know more: Download IES Electronics Engineering Booklist

IES Syllabus 2020 - Importance

Candidates aspiring to crack IES exam should be thorough with the IES 2020 syllabus which is similar to the previous year syllabus pattern. Here are some of the benefits of using IES Syllabus for preparation:

  • IES Syllabus helps a candidate to identify all the important topics for the exam.
  • Candidates appearing for the IES exam can prepare in an organised manner using the IES Syllabus
  • IES Syllabus helps candidates to segregate all the important topics on the basis of difficulty level.

IES Exam 2020 - Important Dates 



Release of Notification

25 September 2019

Start Date of Online Applications

25 September 2019

Closure of Online Application Process

15 October 2019

Preliminary Examination

5 January 2020

Mains Examination

28 June 2020

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First Week of November 2020

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