GATE Production and Industrial Engineering Pattern 2027: Questions, Marks and Negative Marking
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Content Writer | Updated On - Oct 26, 2026
GATE 2027 has 65 questions for 100 marks in three hours. General Aptitude carries 15 marks. The remaining structure depends on the paper and, for some papers, the selected optional sections.
PI covers mathematics, general engineering, two manufacturing-process sections, quality and reliability, industrial engineering, operations research and operations management.
GATE PI 2027 Paper Structure
| Feature | Rule |
|---|---|
| Duration | 3 hours |
| Total questions | 65: 10 General Aptitude and 55 subject questions |
| Total marks | 100 |
| Mode and language | Computer-based test; English |
| Question types | MCQ, MSQ and numerical answer type |
| Mark value | 1 or 2 marks per question |
| Section | Marks | Requirement |
|---|---|---|
| General Aptitude | 15 | Compulsory |
| Engineering Mathematics | 13 | Part of the subject paper |
| Core subject | 72 | All listed technical units are in scope |
There is no optional subject block in this paper. All listed sections are part of the syllabus.
MCQ, MSQ and Numerical Questions
| Question | How to answer |
|---|---|
| MCQ | Select the one correct option |
| MSQ | Select every correct option; there may be more than one |
| NAT | Enter the numerical answer using the on-screen virtual keypad |
An MSQ is not an MCQ with extra chances. Selecting a subset of the correct options, or adding a wrong option, earns no marks. NAT questions have no listed answer options; enter the number at the precision requested in the question.
Marking Scheme and Negative Marking
| Question type | Correct | Incorrect | Unanswered |
|---|---|---|---|
| MCQ, 1 mark | +1 | -1/3 | 0 |
| MCQ, 2 marks | +2 | -2/3 | 0 |
| MSQ, 1 or 2 marks | Full marks only for the exact correct set | 0; no partial credit | 0 |
| NAT, 1 or 2 marks | Full marks for an accepted numerical answer | 0 | 0 |
Unanswered questions carry zero. The MCQ penalty is a fraction of that question's marks, not a flat one-mark deduction. Wrong MSQ and NAT responses receive zero, with no additional penalty.
How Raw Marks Are Calculated
For a mixed paper, add the marks earned on correct answers and subtract only the applicable MCQ penalties. This example is illustrative, not a fixed question-type distribution.
| Answers | Calculation | Marks |
|---|---|---|
| One-mark MCQs: 12 correct, 3 wrong | 12 - 3/3 | 11 |
| Two-mark MCQs: 15 correct, 3 wrong | 30 - (3 x 2/3) | 28 |
| MSQs: four correct two-mark questions | 4 x 2 | 8 |
| NATs: six correct two-mark questions | 6 x 2 | 12 |
| Combined example | 11 + 28 + 8 + 12 | 59 / 100 |
The remaining questions in this example are incorrect non-MCQs or unanswered, contributing zero. These 59 marks are not a GATE score of 590. GATE score calculation uses paper-level qualifying and top-performance benchmarks, with normalised marks where applicable.
Subjects and Syllabus Coverage
| Unit | Topics |
|---|---|
| Engineering Mathematics | Linear Algebra: Matrix algebra; Systems of linear equations; Eigenvalues and eigenvectors. Calculus: Functions of single variable; Limit, continuity and differentiability; Mean value theorems, Evaluation of definite integrals ; Partial derivative; Total derivative; Maxima and minima ; Gradient, divergence and curl; Vector identities ; Directional derivatives; Line, Surface and Volume integrals; Stokes, Gauss and Green’s theorems; Taylor series. 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 transform. Probability and Statistics: Definitions of probability and sampling theorems ; Conditional probability ; Mean, median, mode and standard deviation ; Linear regression, Random variables, Poisson, normal, binomial and exponential distributions. Numerical Methods: Numerical solutions of linear and nonlinear algebraic equations; Integration by trapezoidal and Simpson’s rules; Single and multi-step methods for differential equations. |
| General Engineering | Engineering Materials: Structure, physical and mechanical properties, and applications of common engineering materials (metals and alloys, semiconductors, ceramics, polymers, and composites – metal, polymer and ceramic based); Iron -carbon equilibrium phase diagram; Heat treatment of metals and alloys and its influence on mechanical properties; Stress-strain behavior of metals and alloys. Applied Mechanics: Engineering mechanics – equivalent force systems, free body concepts, equations of equilibrium; Strength of materials – stress, strain and their relationship; Failure theories; Mohr’s circle (stress); Deflection of beams, bending and shear stresses; Thick and thin cylinders; Torsion. 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; Friction and lubrication; Design of shafts, keys, couplings, spur gears, belt drives, brakes and clutches. Thermal and Fluids Engineering: Fluid mechanics – fluid statics, Bernoulli’s equation, flow through pipes, laminar and turbulent flows, equations of continuity and momentum, capillary action; Dimensional analysis; Thermodynamics – zeroth, first and second laws of thermodynamics, thermodynamic systems and processes, calculation of work and heat for systems and control volumes; Air standard cycles; Heat transfer – basic applications of conduction, convection and radiation. |
| Manufacturing Processes I | Casting: Types of casting processes and applications; Sand casting: patterns – types, materials and allowances; molds and cores–materials, making, and testing; design of gating system and riser; analysis of solidification and microstructure development; Other casting techniques: Pressure die casting, centrifugal casting, investment casting, casting defects and their inspection by non-destructive testing. Metal Forming: Stress-strain relations in elastic and plastic deformation; von Mises and Tresca yield criteria, concept of flow stress; Hot, warm and cold working; Bulk forming processes – forging, rolling, extrusion and wire drawing; Sheet metal working processes – blanking, punching, bending and deep drawing; Ideal work and slab analysis; Defects in metal working and their causes.; Joining of Materials: Classification of joining processes; Principles of fusion welding processes using different heat sources (flame, arc, resistance, laser, and electron beam), heat transfer and associated losses; Arc welding processes - SMAW, GMAW, GTAW, plasma arc, submerged arc welding processes; Principles of solid state welding processes - friction welding, friction stir welding, ultrasonic welding; Welding defects - causes and inspection; Principles of adhesive joining, brazing and soldering processes. Powder Processing: Production of metal/ceramic powders, compaction and sintering of metals and ceramic powders. Polymers and Composites: Polymer processing – injection, compression and blow molding, extrusion, calendaring and thermoforming; Molding of composites. |
| Manufacturing Processes II | Machining: Orthogonal and oblique machining, single point cutting tool and tool signature, chip formation, cutting forces, merchant’s analysis, specific cutting energy and power; Machining parameters and material removal rate; Tool materials, tool wear and tool life; Thermal aspects of machining, cutting fluids, machinability; Economics of machining; Machining processes - turning, taper turning, thread cutting, drilling, boring, milling, gear cutting, thread production; Finishing processes – grinding, honing, lapping and super-finishing. Machine Tools: Lathe, milling, drilling and shaping machines – construction and kinematics; Jigs and fixtures – principles, applications, and design. Advanced Manufacturing: Principles and applications of USM, AJM, WJM, AWJM, EDM, LBM, EBM, PAM, CHM, ECM; Effect of process parameters on material removal rate, surface roughness and power consumption; Additive manufacturing techniques: Fundamentals, stereolithography, fused filament fabrication, selective laser sintering, selective laser melting, directed energy deposition. Computer Integrated Manufacturing: Basic concepts of CAD and CAM, CNC; Automation in manufacturing; Industrial robots – configurations, drives and controls; Cellular manufacturing and FMS - group technology; Introduction to Internet of Things and digital twins. |
| Quality and Reliability | Metrology and Inspection: Accuracy and precision; Types of errors ; Limits, fits and tolerances; Gauge design, Interchangeability, selective assembly; Linear, angular, and form measurements (straightness, flatness, roundness, runout and cylindricity) by mechanical and optical methods; Inspection of screw threads and gears; Surface roughness measurement by contact and non-contact methods. Quality Management: Quality – concepts and cost; Statistical quality control – process capability analysis, control charts for variables and attributes and acceptance sampling; Six sigma; Total quality management, Just -in-Time inventory management; Quality assurance and certification - ISO 9001:2015, ISO 14001:2015 ; Integration of sustainable manufacturing with quality management. 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 and predictive maintenance and replacement, total productive maintenance. |
| Industrial Engineering | Product Design and Development: Principles of product design, tolerance design; Quality and cost considerations; Product life cycle; Standardization, simplification, diversification; Value engineering and analysis; Concurrent engineering; Design for “X”. Work System Design: Taylor’s scientific management, Gilbreths’ contributions; Productivity – concepts and; measurements; Method study, micro-motion study, principles of motion economy; Work measurement – time study, work sampling, standard data, PMTS; Ergonomics; Job evaluation and merit rating. Facility Design: Facility location factors and evaluation of alternate locations; Types of plant layout and their evaluation; Assembly line balancing; Material handling systems. |
| Operations research and Operations management | Operation Research: Linear programming – problem formulation, simplex method, duality and sensitivity analysis; Transportation and assignment models; Integer programming; Markovian queuing models; Introduction to discrete event simulation. Engineering Economy and Costing: Elementary cost accounting and methods of depreciation; Break -even analysis; Activity based costing. Production Control: Forecasting techniques – causal and time series models, moving average, exponential smoothing, trend and seasonality; Aggregate production planning; Master production scheduling; MRP, MRP-II and ERP; Routing, scheduling and priority dispatching; Push and pull production systems, concepts of lean and agile manufacturing systems; Logistics, distribution, and supply chain management; Inventory – functions, costs, classifications, deterministic inventory models, quantity discount; Perpetual and periodic inventory control systems. Project Management: CPM, PERT and Gantt chart. Time-cost tradeoff. |
The GATE PI syllabus gives the full topic list and preparation scope.
Using Previous Papers as Mocks
Separate manufacturing-process calculations from production-planning models. For an optimisation problem, identify the objective, decision variables and constraints before selecting an algorithm.
Use a complete paper for the three-hour practice attempt. A short topic set measures that topic only; do not convert its percentage into an expected GATE rank. Compare the question types, marks and current topics before using previous-year GATE papers as full simulations.
Raw Marks, Normalised Marks, Score and Rank
| Measure | Meaning |
|---|---|
| Raw marks | Marks earned from the answers and MCQ penalties |
| Normalised marks | Adjusted marks for a paper conducted across multiple sessions |
| GATE score | Standardised score based on the official paper-level formula |
| Rank | Relative position in the applicable paper or optional-subject list |
Normalisation is not a fixed bonus for a difficult shift. It depends on session-level and all-session statistics, which are unavailable from an individual response sheet alone.
GATE PI Pattern FAQs
Is GATE 2027 a 100-mark or 100-question paper?+
It is a 100-mark paper with 65 questions: 10 General Aptitude and 55 subject questions. Questions carry either one or two marks.
Is the whole paper online?+
Yes. GATE is a computer-based examination in English. Numerical answers are entered through the on-screen virtual keypad.
Does selecting one correct MSQ option give partial credit?+
No. You must select exactly all the correct options. A partial set or a set containing an incorrect option earns zero.
Is there negative marking for numerical questions?+
No. An incorrect NAT receives zero. The negative-marking rules apply to MCQs only.
Can I multiply my marks by ten to calculate my GATE score?+
No. The score formula uses the General-category qualifying mark and a top-candidate benchmark for the paper. Multi-session papers use normalised marks first. A simple marks-times-ten calculation does not reproduce the official score.
Will the 2027 chapter distribution match last year?+
The official section allocation applies, but there is no promise of the same chapter-by-chapter distribution. Use dated paper analysis as a record of that examination, not as a guarantee for the next one.
*The article might have information for the previous academic years, please refer the official website of the exam.
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