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gate 2020 answer keys

GATE 2020 official answer key released by IIT Delhi

GATE Exam 2020 Answer Key & Solutions (All Sets & All Papers of all branches): Indian Institute of Technology, Delhi (IIT Delhi) conducts the Graduate Aptitude Test Engineering (GATE 2020). This year’s GATE 2020 Exam will be conducted on 1st, 2nd, 8th & 9th February 2020.

GATE 2020 Exam was conducted in different shifts in February on Saturday and Sunday. Students looking for GATE 2020 official Answer Keys with detailed solutions then you are at the right place. GATE 2020 official Answer Key helps many GATE aspirants to calculate their GATE Marks GATE Score before actual GATE 2020 Result.

LOGICWORK help you by providing GATE 2020 Answer solution for Mechanical (ME), Instrumentation – (IN), Production – (PI), Electronics & Communication – (EC), Electrical – (EE), Computer Science – (CS) & Civil Engineering – (CE) and other branches by IIT Delhi.

GATE official answer key branch-wise by IIT Delhi given below –

GATE 2020 Answer Key – Civil Engineering CE

Check the table given below for the GATE 2020 official civil engineering CE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 CE Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Mechanical Engineering ME

Check the table given below for the GATE 2020 official Mechanical ME Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 ME Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Computer Science and Information Technology CSE

Check the table given below for the GATE 2020 official Computer Science and Information Technology CSE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Electronics and Communication Engineering ECE

Check the table given below for the GATE 2020 official Electronics and Communication Engineering ECE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Electrical Engineering EE

Check the table given below for the GATE 2020 official Electrical Engineering EE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Instrumentation Engineering IN

Check the table given below for the GATE 2020 official Instrumentation Engineering IN Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Aerospace Engineering AE

Check the table given below for the GATE 2020 official Aerospace Engineering AE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Agricultural Engineering AG

Check the table given below for the GATE 2020 official Agricultural Engineering AG Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Architecture and Planning AR

Check the table given below for the GATE 2020 official Architecture and Planning AR Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Biomedical Engineering BM

Check the table given below for the GATE 2020 official Biomedical Engineering BM Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Biotechnology BT

Check the table given below for the GATE 2020 official Biotechnology BT Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Chemical Engineering CH

Check the table given below for the GATE 2020 official Chemical Engineering CH Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Chemistry CY

Check the table given below for the GATE 2020 official Chemistry CY Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Ecology and Evolution EY

Check the table given below for the GATE 2020 official Ecology and Evolution EY Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Geology and Geophysics GG

Check the table given below for the GATE 2020 official Geology and Geophysics GG Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key –
Mathematics MA

Check the table given below for the GATE 2020 official Mathematics MA Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Mining Engineering MN

Check the table given below for the GATE 2020 official Mining Engineering MN Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Metallurgical Engineering MT

Check the table given below for the GATE 2020 official Metallurgical Engineering MT Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Petroleum Engineering PE

Check the table given below for the GATE 2020 official Petroleum Engineering PE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Physics PH

Check the table given below for the GATE 2020 official Physics PH Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Production and Industrial Engineering PI

Check the table given below for the GATE 2020 official Production and Industrial Engineering PI Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Statistics ST

Check the table given below for the GATE 2020 official Statistics ST Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Textile Engineering and Fibre Science TF

Check the table given below for the GATE 2020 official Textile Engineering and Fibre Science TF Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Engineering Sciences XE

Check the table given below for the GATE 2020 official Engineering Sciences XE Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Life Sciences XL

Check the table given below for the GATE 2020 official Life Sciences XL Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Fluid Mechanics

Check the table given below for the GATE 2020 official Fluid Mechanics Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Materials Science

Check the table given below for the GATE 2020 official Materials Science Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Solid Mechanics

Check the table given below for the GATE 2020 official Solid Mechanics Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Thermodynamics

Check the table given below for the GATE 2020 official Thermodynamics Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Polymer Science and Engineering

Check the table given below for the GATE 2020 official Polymer Science and Engineering Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Food Technology

Check the table given below for the GATE 2020 official Food Technology Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Atmospheric and Oceanic Sciences

Check the table given below for the GATE 2020 official Atmospheric and Oceanic Sciences Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Biochemistry

Check the table given below for the GATE 2020 official Biochemistry Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Botany

Check the table given below for the GATE 2020 official Botany Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Microbiology

Check the table given below for the GATE 2020 official Microbiology Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key –
Zoology

Check the table given below for the GATE 2020 official Zoology Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

GATE 2020 Answer Key – Food Technology

Check the table given below for the GATE 2020 official Food Technology Answer Keys for SET 1 & SET 2. You can download SET 1 & SET 2 Question Paper and Answer Keys with detailed solutions.

Gate EXAM 2020

Gate Syllabus for Production and Industrial Engineering (PI)

The syllabus for Production and Industrial Engineering is available on this page for the candidates. The syllabus for all the subjects in GATE 2020 is different and candidates can check it out on the official website of the exam. There will be 65 questions in the exam, out of which 55 questions will be based on the PI subject and Mathematics. The remaining 10 questions will be based on the third section, the General Aptitude section. Candidates can check the syllabus for PI paper from this page.

Table Of Contents

GATE 2020 Syllabus and Paper Pattern

GATE Paper (Code)Production and Industrial Engineering (PI)
Total Number of Questions65
Total Marks100
Time Duration of Exam3 Hours
Marks Distribution15 Marks from General Aptitude
15 Marks from Engineering Mathematics
70 Marks from Core Subjects of Paper

DOWNLOAD GATE Production and Industrial Engineering (PI) syllabus pdf

1. General Aptitude

Verbal Ability: English grammar, sentence completion, verbal analogies, word groups, instructions, critical reasoning and verbal deduction.
Numerical Ability: Numerical computation, numerical estimation, numerical reasoning and data interpretation.

2. Engineering Mathematics

Linear Algebra: Matrix algebra, Systems of linear equations, Eigen values and eigen vectors.


Calculus: Functions of single variable, Limit, continuity and differentiability, Mean value theorems, Evaluation of definite and improper integrals, Partial derivatives, Total derivative, Maxima and minima, Gradient, Divergence and Curl, Vector identities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss and Green’s theorems.


Differential Equations: First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Cauchy’s and Euler’s equations, Initial and boundary value problems, Laplace transforms, Solutions of one dimensional heat and wave equations and Laplace equation.


Complex variables: Analytic functions, Cauchy’s integral theorem, Taylor series.
Probability and Statistics: Definitions of probability and sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Poisson, Normal and Binomial distributions.


Numerical Methods: Numerical solutions of linear and non-linear algebraic equations Integration by trapezoidal and Simpson’s rule, single and multi-step methods for differential equations.

3. General Engineering

Engineering Materials: Structure and properties correlation;engineering materials (metals, ceramics, polymers and composites) – properties and applications; stress-strain behavior of metals and alloys;iron-carbon phase diagram, heat treatment of metals and alloys, its influence on mechanical properties.


Applied Mechanics: Engineering mechanics – equivalent force systems, free body concepts, equations of equilibrium; trusses; strength of materials–stress, strain and their relationship; failure theories, Mohr’s circle(stress), deflection of beams, bending and shear stress, Euler’s theory of columns.


Theory of Machines and Design: Analysis of planar mechanisms, cams and followers; governors and fly wheels; design of bolted, riveted and welded joints; interference/shrink fit joints; design of shafts, keys, spur gears, belt drives, brakes and clutches; pressure vessels.


Thermal and Fluids Engineering: Fluid mechanics – fluid statics, Bernoulli’s equation, flow through pipes, equations of continuity and momentum, capillary action, contact angle and wetting; thermodynamics – zeroth, first and second law of thermodynamics, thermodynamic system and processes, calculation of work and heat for systems and control volumes; air standard cycles; heat transfer – basic applications of conduction, convection and radiation.

4. Manufacturing Processes I

Casting: types of casting processes and applications; patterns – types and materials; allowances; moulds and cores – materials, making, and testing; casting techniques of cast iron,
steels and nonferrous metals and alloys; analysis ofsolidification andmicrostructure development; design of gating and riser; origin of defects.


Metal Forming: Stress-strain relations in elastic and plastic deformation; concept of flow stress; hot and cold working – forging, rolling, extrusion and wire drawing; sheet metal
working processes – blanking, bending and deep drawing; ideal work and slab analysis;origin of metal workingdefects.


Joining of materials: Principles of fusion welding processes(manual metal arc, MIG, TIG, plasma arc, submerged arc welding processes)–different heat sources (flame, arc, resistive,
laser, electron beam), and heat transfer and associated losses, flux application, feeding of filler rod; Principles of solid state welding processes (friction, explosive welding, ultrasonic
welding processes); Principles of adhesive, brazing and soldering processes; Origins of welding defects.


Powder processing: Production of metal/ceramic powders, compaction and sintering of metals and ceramic powders. Polymers and Composites: Plastic processing – injection, compression and blow molding, extrusion, calendaring and thermoforming; molding of composites.

5. Manufacturing Processes II

Machine Tools and Machining: Basic machine tools like centre lathe, milling machine, and drilling machine – construction and kinematics; machining processes – turning, taper
turning, thread cutting, drilling, boring, milling, gear cutting, thread production, grinding; geometry of single point cutting tools, chip formation, cutting forces, specific cutting
energy and power requirements, Merchant’s analysis; basis ofselection of machining parameters; tool materials, tool wear and tool life, economics of machining, thermal aspects of
machining, cutting fluids, machinability; Jigs and fixtures – principles, applications, and design
Non-traditional Manufacturing: Principles, applications, effect of process parameters on MRR and product quality of non-traditional machining processes – USM, AJM, WJM,
AWJM, EDM and Wire cut EDM, LBM, EBM, PAM, CHM, ECM.


Computer Integrated Manufacturing: Basic concepts of CAD – geometric modeling, CAM – CNC and robotics – configurations, drives and controls, Group Technology and its
applications – CAPP, cellular manufacturing and FMS.

6. Qualityand Reliability

Metrology and Inspection: Limits, fits, and tolerances, gauge design, interchangeability, selective assembly; linear, angular, and form measurements(straightness, squareness, flatness,
roundness, and cylindricity) by mechanical and optical methods; inspection of screw threads and gears; surface finish measurement by contact and non-contact methods;tolerance
analysis in manufacturing and assembly.


Quality management: Quality – concept and costs; quality assurance; statistical quality control, acceptance sampling, zero defects, six sigma; total quality management; ISO 9000.


Reliability and Maintenance: Reliability, availability and maintainability; distribution of failure and repair times; determination of MTBF and MTTR, reliability models; determination
of system reliability; preventive maintenance and replacement.

7. Industrial Engineering

Product Design and Development: Principles of good product design, tolerance design; quality and cost considerations; product life cycle; standardization, simplification, diversification,
value engineering and analysis, concurrent engineering;comparison of production alternatives.


Work System Design: Taylor’s scientific management, Gilbreths’s contributions; productivity – concepts and measurements; methodstudy, micro-motion study, principles of motion
economy; work measurement –time study, work sampling, standard data, PMTS; ergonomics; job evaluation, merit rating, incentive schemes, and wage administration.


Facility Design: Facility location factors and evaluation of alternate locations; types of plant layout and their evaluation; computer aided layout design techniques; assembly line
balancing; materials handling systems.

8. Operations research and Operations management

Operation Research: Linear programming – problem formulation, simplex method, duality and sensitivity analysis; transportation and assignment models; network flow models,
constrained optimization and Lagrange multipliers; Markovian queuing models; dynamic programming; simulation – manufacturing applications.


Engineering Economy and Costing: Elementary cost accounting and methods of depreciation; break-even analysis, techniques for evaluation of capital investments, financial
statements, time-cost trade-off, resource leveling.


Production control: Forecasting techniques – causal and time series models, moving average, exponential smoothing, trend and seasonality; aggregate production planning; master
production scheduling; MRP and MRP-II; routing, scheduling and priority dispatching; Push and pull production systems, concept of JIT manufacturing system; Logistics, distribution, and supply chain management; Inventory – functions, costs, classifications, deterministicinventory models, quantity discount; perpetual and periodic inventory control
systems.
Project management – PERT and CPM.

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Gate EXAM 2020

Gate Syllabus for Electrical Engineering (EE) pdf

Download Gate Syllabus for Electrical Engineering (EE) pdf – As a GATE aspirant gate syllabus is the first step to clear the exam.

GATE 2020 Syllabus and Paper Pattern

Table Of Contents
GATE Paper (Code)Electrical Engineering (EE)
Total Number of Questions65
Total Marks100
Time Duration of Exam3 Hours
Marks Distribution15 Marks from General Aptitude
15 Marks from Engineering Mathematics
70 Marks from Core Subjects of Paper

DOWNLOAD GATE SYLLABUS Electrical Engineering pdf

1. General Aptitude

Verbal Ability: English grammar, sentence completion, verbal analogies, word groups, instructions, critical reasoning and verbal deduction.
Numerical Ability: Numerical computation, numerical estimation, numerical reasoning and data interpretation.

2. Engineering Mathematics

Linear Algebra: Matrix Algebra, Systems of linear equations, Eigenvalues, Eigenvectors.
Calculus: Mean value theorems, Theorems of integral calculus, Evaluation of definite and improper integrals, Partial Derivatives, Maxima and minima, Multiple integrals, Fourier series, Vector identities, Directional derivatives, Line integral, Surface integral, Volume integral, Stokes’s theorem, Gauss’s theorem, Green’s theorem.


Differential Equations: First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy’s equation, Euler’s equation, Initial and boundary value problems, Partial Differential Equations, Method of separation of variables.


Complex variables: Analytic functions, Cauchy’s integral theorem, Cauchy’s integral formula, Taylor series, Laurent series, Residue theorem, Solution integrals.


Probability and Statistics: Sampling theorems, Conditional probability, Mean, Median, Mode, Standard Deviation, Random variables, Discrete and Continuous distributions, Poisson distribution, Normal distribution, Binomial distribution, Correlation analysis, Regression analysis.
Numerical Methods: Solutions of nonlinear algebraic equations, Single and Multi-step methods for differential equations.


Transform Theory: Fourier Transform, Laplace Transform, z-Transform.

3. Electric Circuits

Network graph, KCL, KVL, Node and Mesh analysis, Transient response of dc and ac networks, Sinusoidal steadystate analysis, Resonance, Passive filters, Ideal current and voltage sources, Thevenin’s theorem, Norton’s theorem, Superposition theorem, Maximum power transfer theorem, Two-port networks, Three phase circuits, Power and power factor in ac circuits.

4. Electromagnetic Fields

Coulomb’s Law, Electric Field Intensity, Electric Flux Density, Gauss’s Law, Divergence, Electric field and potential due to point, line, plane and spherical charge distributions, Effect of dielectric medium, Capacitance of simple configurations, Biot-Savart’s law, Ampere’s law, Curl, Faraday’s law, Lorentz force, Inductance, Magnetomotive force, Reluctance, Magnetic circuits,Self and Mutual inductance of simple configurations.

5. Signals and Systems

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, Applications of Fourier Transform, Laplace Transform and z-Transform.

6. Electrical Machines

Single phase transformer: equivalent circuit, phasor diagram, open circuit and short circuit tests, regulation and efficiency;

Three phase transformers: connections, parallel operation; Auto-transformer, Electromechanical energy conversion principles, DC machines: separately excited, series and shunt, motoring and generating mode of operation and their characteristics, starting and speed control of dc motors;

Three phase induction motors: principle of operation, types, performance, torque-speed characteristics, no-load and blocked rotor tests, equivalent circuit, starting and speed control; Operating principle of single phase induction motors;

Synchronous machines: cylindrical and salient pole machines, performance, regulation and parallel operation of generators, starting of synchronous motor, characteristics; Types of losses and efficiency calculations of electric machines.

7. Power Systems

Power generation concepts, ac and dc transmission concepts, Models and performance of transmission lines and cables, Series and shunt compensation, Electric field distribution and insulators, Distribution systems, Per-unit quantities, Bus admittance matrix, Gauss-Seidel and Newton-Raphson load flow methods, Voltage and Frequency control, Power factor correction, Symmetrical components, Symmetrical and unsymmetrical fault analysis, Principles of over-current, differential and distance protection; Circuit breakers, System stability concepts, Equal area criterion.

8. Control Systems

Mathematical modeling and representation of systems, Feedback principle, transfer function, Block diagrams and Signal flow graphs, Transient and Steady-state analysis of linear time invariant systems, Routh-Hurwitz and Nyquist criteria, Bode plots, Root loci, Stability analysis, Lag, Lead and Lead-Lag compensators; P, PI and PID controllers; State space model, State transition matrix.

9. Electrical and Electronic Measurements

Bridges and Potentiometers, Measurement of voltage, current, power, energy and power factor; Instrument transformers, Digital voltmeters and multimeters, Phase, Time and Frequency measurement; Oscilloscopes, Error analysis.

10. Analog and Digital Electronics

Characteristics of diodes, BJT, MOSFET; Simple diode circuits: clipping, clamping, rectifiers; Amplifiers: Biasing, Equivalent circuit and Frequency response; Oscillators and Feedback amplifiers; Operational amplifiers: Characteristics and applications;

Simple active filters, VCOs and Timers, Combinational and Sequential logic circuits, Multiplexer, Demultiplexer, Schmitt trigger, Sample and hold circuits, A/D and D/A converters, 8085Microprocessor: Architecture, Programming and Interfacing.

11. Power Electronics

Characteristics of semiconductor power devices: Diode, Thyristor, Triac, GTO, MOSFET, IGBT; DC to DC conversion: Buck, Boost and Buck-Boost converters; Single and three phase configuration of uncontrolled rectifiers, Line commutated thyristor based converters, Bidirectional ac to dc voltage source converters, Issues of line current harmonics, Power factor, Distortion factor of ac to dc converters, Single phase and three phase inverters, Sinusoidal pulse width modulation.

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