Zollege is here for to help you!!

Trending Colleges Upcoming Coming Exams

Need Counselling

GATE Instrumentation Engineering Pattern 2027: Questions, Marks and Negative Marking

OverviewIN Pattern▾Application Process▾Preparation Tips▾Result▾Question Papers▾Cut OffCollege PredictorNewsQ&A

Sanghamitra Deb

Content Writer | Updated On - Oct 12, 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.

IN combines electrical fundamentals, signals, control, electronics, measurements, sensors and optical instrumentation. The 2027 list also names Electrical Circuits and Machines as a section.

GATE IN 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

IN combines electrical fundamentals, signals, control, electronics, measurements, sensors and optical instrumentation. The 2027 list also names Electrical Circuits and Machines as a section.

There is no optional subject block in this paper. The syllabus defines what can be tested; it does not offer a choice to replace one subject with another. Leaving a question unanswered earns zero, but it does not reduce the set of topics that may appear.

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
MCQ, 1 mark	+1	-1/3
MCQ, 2 marks	+2	-2/3
MSQ, 1 or 2 marks	Full marks only for the exact correct set	0; no partial credit
NAT, 1 or 2 marks	Full marks for an accepted numerical answer	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.

Raw Marks Calculation: Worked Example

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

IN combines electrical fundamentals, signals, control, electronics, measurements, sensors and optical instrumentation. The 2027 list also names Electrical Circuits and Machines as a section.

Unit	Topics
Engineering Mathematics	Linear Algebra: Matrix algebra, systems of linear equations, consistency and rank, eigenvalues and eigenvectors, tensors.; Calculus: Functions, limits, continuity; differentiation, differentiability, partial derivatives, maxima and minima, integration, multiple integrals, vector algebra, line, surface and volume integrals, Stokes, Gauss and Green’s theorems.; Differential Equations: Ordinary differential equations, first order linear differential equations, second order linear differential equations with constant coefficients, method of variation of parameters, Cauchy’s and Euler’s equations, initial and boundary value problems, solu tion of partial differential equations: variable separable method. Analysis of Complex Variables: Analytic functions, Cauchy’s integral theorem and integral formula, Taylor’s and Laurent’s series, residue theorem, solution of integrals.; Probability and Statistics: Random variables, discrete and continuous distributions: normal, Poisson and Binomial distributions. Sampling from distributions, conditional probability and Bayes' theorem, mean, median, mode, standard deviation and variance.; Numerical Methods: Solution of matrix equations, solutions of non-linear algebraic equations, iterative methods for solving differential equations, numerical integration, regression and correlation analysis, backpropagation for neural networks.
Electricity and Magnetism	Coulomb's law, electric field intensity, electric flux density, Gauss' law, electric field and potential due to point, line, plane and spherical charge distributions, effect of dielectric medium, permittivity, capacitance, magnetic field intensity, magneti c flux density, Biot ‐Savart’s law, Ampere’s law, Faraday’s law, Lorentz force, permeability, self and mutual inductance, electrical and magnetic dipoles, electromagnetic induction, magnetomotive force, reluctance, magnetic circuits, B -H curve, Maxwell's equations: vector, dif ferential and integral forms.
Electrical Circuits and Machines	Electrical Circuits: Independent, dependent, ideal and practical sources; V -I characteristics of practical current and voltage sources, battery, solar cell, resistor, inductor, coupled inductor, capacitor; transient analysis of RC, RL, LC, RLC circuits; power and energy consumption, power rating of components, efficiency and losses. Kirchhoff’s laws, mesh and nodal analysis, star -delta transformation, superposition, Thevenin’s, Norton’s, Miller’s, maximum power transfer and reciprocity theorems. Peak, average and rms values of AC quantities; apparent, active and reactive powers, power factor; phasor analysis, impedance and admittance; series and parallel resonance, locus diagrams, realization of basic filters with R, L, and C elements; transient analysis of RLC circuits with AC excitation. Analysis of one-port and two-port networks with controlled voltage and current sources, driving point impedance and admittance, open and short circuit parameters. Electrical Machines: Single phase transformers, permanent magnet synchronous machines; buck and boost converters, rectifiers, single phase inverters; rotor position and speed sensing, current sensing, pulse width modulation (PWM) control.
Signals and Systems	Periodic, aperiodic and impulse signals; sampling; Fourier series, Laplace, Fourier and z -transforms, DFT and FFT; continuous -time and discrete -time systems, transfer function, linear time invariant systems, impulse response, frequency response, pulse transfer function; convolution, correlation; basics of IIR and FIR filters.
Control Systems	Feedback principles, role of sensing in feedback, signal flow graphs, transient response, steady state error, Bode plot, phase and gain margins, Routh and Nyquist criteria, root loci, state -space representation of systems; time-delay systems.; Actuators for control system: control valves, servo valves, servo motors, stepper motors; on -off, P, PI, PID, cascade, feed forward, and ratio controllers, tuning of PID controllers; design of lead, lag and lead -lag compensators; basic concept of supervisory control, basics of distributed control system (DCS) and programmable logic controller (PLC).
Analog Electronics	Types of diode and their applications; BJT and MOSFET circuits, biasing, power dissipation, DC analysis, small signal analysis, frequency response of transistor circuits, feedback, amplifier design. Characteristics of ideal and practical operational amplif iers; applications of opamps : adder, subtractor, integrator, differentiator, difference amplifier, instrumentation amplifier, precision rectifier, active filters, comparators, Schmitt trigger, multivibrators, oscillators, signal generators, voltage-controlled oscillators and phase-locked loop.; Sources and effects of noise and interference in electronic circuits; conductively, capacitively, inductively coupled interference; noise generated by electronic components, thermal noise, shot noise, flicker noise; shielding and grounding. Basic principles of component selection based on specifications, circuit board realization and testing.
Digital Electronics	Basics of number systems. Combinational logic circuits, multiplexer and demultiplexer, truth table, minimization of Boolean functions ; IC families: ECL, TTL and CMOS , CMOS implementation of logic gates ; arithmetic circuits, sequential circuits, finite state machines, flipflops, shift registers, timers and counters.; Analog front end: analog multiplexer, programmable gain amplifier, sample -and-hold circuit; analog-to-digital converters (ADC) (successive approximation, integrating, flash and sigma-delta) and digital-to-analog converters (DAC) (weighted R, R-2R ladder and current steering logic); characteristics and specifications of ADC and DAC (dynamic range, resolution, quantization, significant bits, conversion/settling time, INL, DNL, ENOB); embedded systems: common microprocessors and microcontrollers, memory and input -output interfacing, embedded systems programming; basics of data acquisition systems, virtual instrumentation, IoT; basic AI applications in instrumentation (sensor linearization, system calibration and tuning, signal classification).
Measurements	SI units, standards of basic electrical quantities (R, L, C, voltage, current and frequency), systematic and random errors in measurement, expression of uncertainty, accuracy and precision, propagation of errors, linear and weighted regression ; bridges: Wheatstone, Kelvin, Maxwell, Anderson, Schering and Wien bridges for measurement of R, L, C and frequency, typical applications of bridges, Q -meter; megohm measurement; measurement of voltage, current and power in DC, single and three phase AC circuits; contact and noncontact type AC and DC current and voltage probes; true rms meters, voltage and current scaling, instrument transformers, timer/counter, time, phase and frequency measu rements, digital voltmeter, digital multimeter, digital energy meter, digital storage oscilloscope, spectrum analyzer.
Sensors and Industrial Instrumentation	Resistive, capacitive, inductive, piezoelectric, electromagnetic and Hall effect sensors and associated signal conditioning circuits; transducers for industrial instrumentation: displacement, velocity, acceleration (linear and angular), force, torque, vibration, shock, pressure (including low and high pressure), flow (variable head, variable area, electromagnetic, ultrasonic, turbine flowmeters), temperature (thermocouple, bolometer, 2, 3, 4 wire RTD, thermistor, pyrometer and semiconductor sensor), liquid level, pH, conductivity and viscosity measurement.
Communication and Optical Instrumentation	Amplitude and frequency modulation and demodulation, pulse code modulation, frequency and time division multiplexing; amplitude, phase, frequency, quadrature amplitude, pulse shift keying for digital modulation and demodulation; functional architectures of transmitters and receivers; instrument and sensor networks, 4 –20 mA two-wire transmitter. Optical sources and detectors: LED, laser, photo-diode, light dependent resistor, square law detectors and their characteristics; interferometer: applications in metrology; basics of fiber optic sensing. Near- infrared (NIR) sensing, Ultraviolet-Visible (UV-VIS) spectrophotometers, mass spectrometer.

The GATE IN syllabus gives the full topic list and preparation scope.

Using Previous Papers as Mocks

Connect a sensor to its conditioning circuit and measurement error instead of learning only its operating principle. Revise transforms before solving control and signal-response problems.

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.

What do you need right now?

Quick Navigation PAPER DETAILS

Paper Structure
Question Types and Marking

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

Question Types and Marking

−

Type	Correct	Incorrect
MCQ, 1 mark	+1	-1/3
MCQ, 2 marks	+2	-2/3
MSQ, 1 or 2 marks	Full marks only for the exact correct set	0; no partial credit
NAT, 1 or 2 marks	Full marks for an accepted numerical answer	0

Worked Marks Example

−

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 example returns raw marks, not a rank or an official GATE score.

Subject and Option Reference

−

IN combines electrical fundamentals, signals, control, electronics, measurements, sensors and optical instrumentation. The 2027 list also names Electrical Circuits and Machines as a section.

Unit	Topics
Engineering Mathematics	Linear Algebra: Matrix algebra, systems of linear equations, consistency and rank, eigenvalues and eigenvectors, tensors.; Calculus: Functions, limits, continuity; differentiation, differentiability, partial derivatives, maxima and minima, integration, multiple integrals, vector algebra, line, surface and volume integrals, Stokes, Gauss and Green’s theorems.; Differential Equations: Ordinary differential equations, first order linear differential equations, second order linear differential equations with constant coefficients, method of variation of parameters, Cauchy’s and Euler’s equations, initial and boundary value problems, solu tion of partial differential equations: variable separable method. Analysis of Complex Variables: Analytic functions, Cauchy’s integral theorem and integral formula, Taylor’s and Laurent’s series, residue theorem, solution of integrals.; Probability and Statistics: Random variables, discrete and continuous distributions: normal, Poisson and Binomial distributions. Sampling from distributions, conditional probability and Bayes' theorem, mean, median, mode, standard deviation and variance.; Numerical Methods: Solution of matrix equations, solutions of non-linear algebraic equations, iterative methods for solving differential equations, numerical integration, regression and correlation analysis, backpropagation for neural networks.
Electricity and Magnetism	Coulomb's law, electric field intensity, electric flux density, Gauss' law, electric field and potential due to point, line, plane and spherical charge distributions, effect of dielectric medium, permittivity, capacitance, magnetic field intensity, magneti c flux density, Biot ‐Savart’s law, Ampere’s law, Faraday’s law, Lorentz force, permeability, self and mutual inductance, electrical and magnetic dipoles, electromagnetic induction, magnetomotive force, reluctance, magnetic circuits, B -H curve, Maxwell's equations: vector, dif ferential and integral forms.
Electrical Circuits and Machines	Electrical Circuits: Independent, dependent, ideal and practical sources; V -I characteristics of practical current and voltage sources, battery, solar cell, resistor, inductor, coupled inductor, capacitor; transient analysis of RC, RL, LC, RLC circuits; power and energy consumption, power rating of components, efficiency and losses. Kirchhoff’s laws, mesh and nodal analysis, star -delta transformation, superposition, Thevenin’s, Norton’s, Miller’s, maximum power transfer and reciprocity theorems. Peak, average and rms values of AC quantities; apparent, active and reactive powers, power factor; phasor analysis, impedance and admittance; series and parallel resonance, locus diagrams, realization of basic filters with R, L, and C elements; transient analysis of RLC circuits with AC excitation. Analysis of one-port and two-port networks with controlled voltage and current sources, driving point impedance and admittance, open and short circuit parameters. Electrical Machines: Single phase transformers, permanent magnet synchronous machines; buck and boost converters, rectifiers, single phase inverters; rotor position and speed sensing, current sensing, pulse width modulation (PWM) control.
Signals and Systems	Periodic, aperiodic and impulse signals; sampling; Fourier series, Laplace, Fourier and z -transforms, DFT and FFT; continuous -time and discrete -time systems, transfer function, linear time invariant systems, impulse response, frequency response, pulse transfer function; convolution, correlation; basics of IIR and FIR filters.
Control Systems	Feedback principles, role of sensing in feedback, signal flow graphs, transient response, steady state error, Bode plot, phase and gain margins, Routh and Nyquist criteria, root loci, state -space representation of systems; time-delay systems.; Actuators for control system: control valves, servo valves, servo motors, stepper motors; on -off, P, PI, PID, cascade, feed forward, and ratio controllers, tuning of PID controllers; design of lead, lag and lead -lag compensators; basic concept of supervisory control, basics of distributed control system (DCS) and programmable logic controller (PLC).
Analog Electronics	Types of diode and their applications; BJT and MOSFET circuits, biasing, power dissipation, DC analysis, small signal analysis, frequency response of transistor circuits, feedback, amplifier design. Characteristics of ideal and practical operational amplif iers; applications of opamps : adder, subtractor, integrator, differentiator, difference amplifier, instrumentation amplifier, precision rectifier, active filters, comparators, Schmitt trigger, multivibrators, oscillators, signal generators, voltage-controlled oscillators and phase-locked loop.; Sources and effects of noise and interference in electronic circuits; conductively, capacitively, inductively coupled interference; noise generated by electronic components, thermal noise, shot noise, flicker noise; shielding and grounding. Basic principles of component selection based on specifications, circuit board realization and testing.
Digital Electronics	Basics of number systems. Combinational logic circuits, multiplexer and demultiplexer, truth table, minimization of Boolean functions ; IC families: ECL, TTL and CMOS , CMOS implementation of logic gates ; arithmetic circuits, sequential circuits, finite state machines, flipflops, shift registers, timers and counters.; Analog front end: analog multiplexer, programmable gain amplifier, sample -and-hold circuit; analog-to-digital converters (ADC) (successive approximation, integrating, flash and sigma-delta) and digital-to-analog converters (DAC) (weighted R, R-2R ladder and current steering logic); characteristics and specifications of ADC and DAC (dynamic range, resolution, quantization, significant bits, conversion/settling time, INL, DNL, ENOB); embedded systems: common microprocessors and microcontrollers, memory and input -output interfacing, embedded systems programming; basics of data acquisition systems, virtual instrumentation, IoT; basic AI applications in instrumentation (sensor linearization, system calibration and tuning, signal classification).
Measurements	SI units, standards of basic electrical quantities (R, L, C, voltage, current and frequency), systematic and random errors in measurement, expression of uncertainty, accuracy and precision, propagation of errors, linear and weighted regression ; bridges: Wheatstone, Kelvin, Maxwell, Anderson, Schering and Wien bridges for measurement of R, L, C and frequency, typical applications of bridges, Q -meter; megohm measurement; measurement of voltage, current and power in DC, single and three phase AC circuits; contact and noncontact type AC and DC current and voltage probes; true rms meters, voltage and current scaling, instrument transformers, timer/counter, time, phase and frequency measu rements, digital voltmeter, digital multimeter, digital energy meter, digital storage oscilloscope, spectrum analyzer.
Sensors and Industrial Instrumentation	Resistive, capacitive, inductive, piezoelectric, electromagnetic and Hall effect sensors and associated signal conditioning circuits; transducers for industrial instrumentation: displacement, velocity, acceleration (linear and angular), force, torque, vibration, shock, pressure (including low and high pressure), flow (variable head, variable area, electromagnetic, ultrasonic, turbine flowmeters), temperature (thermocouple, bolometer, 2, 3, 4 wire RTD, thermistor, pyrometer and semiconductor sensor), liquid level, pH, conductivity and viscosity measurement.
Communication and Optical Instrumentation	Amplitude and frequency modulation and demodulation, pulse code modulation, frequency and time division multiplexing; amplitude, phase, frequency, quadrature amplitude, pulse shift keying for digital modulation and demodulation; functional architectures of transmitters and receivers; instrument and sensor networks, 4 –20 mA two-wire transmitter. Optical sources and detectors: LED, laser, photo-diode, light dependent resistor, square law detectors and their characteristics; interferometer: applications in metrology; basics of fiber optic sensing. Near- infrared (NIR) sensing, Ultraviolet-Visible (UV-VIS) spectrophotometers, mass spectrometer.

GATE IN Pattern FAQs

Paper and Sections

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.

Can I change my optional subject during the examination?+

Marking and Results

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.

SHARE ON FACEBOOK SHARE ON TWITTER

Ask your question

Answered Questions

What are the eligibility criteria for different engineering programs?

Zollege Team

08 Apr 24

For the UG Engineering courses, candidates need to have 10+2 with 45% for the general category. However, the aggregate percentage will be 40% for SC/ST/OBC. For the PG Engineering courses, candidates need to have graduation with 50% and 45% for the SC/ST/OBC.

What is the fee structure for b.tech computer science and engineering at VIT University?

Zollege Team

11 Mar 24

The Fee for the B.Tech Computer Science and Engineering at VIT University is INR 1.73 Lakhs with an INR 3k caution deposit which is refundable and a One-time payment only.

What interdisciplinary research opportunities are available for graduate students at PRSU?

Rency

06 Mar 24

Pt. Ravishankar Shukla University (PRSU) in Raipur, Chhattisgarh offers a variety of interdisciplinary research opportunities, including:

Interdepartmental linkage

Research opportunities include herbal drug technology, university industry, and centers for cognitive, translational, nano-science, and geriatrics.
School of Regional Studies and Research

Research opportunities include rural development, anthropology, sociology, psychology, economics, geography, history, linguistics, literature, medical science, home science, social work, education, agriculture, and management.
School of Studies in Environmental Science

Research opportunities include renewable energy, water pollution, soil pollution, heavy metal pollution, air quality monitoring, and analysis.
School of Studies in Biotechnology

Research opportunities include bioprocess engineering, fungal biotechnology, bio-fuel technology, environmental biotechnology, and plant physiology.
Center for Basic Sciences (CBS)

Research opportunities include Inspire Internship Camps, which attract talented youth to take up research by working with scientists like Nobel Prize Winners.

GATE Instrumentation Engineering Pattern 2027: Questions, Marks and Negative Marking

GATE IN 2027 Paper Structure

MCQ, MSQ and Numerical Questions

Marking Scheme and Negative Marking

Raw Marks Calculation: Worked Example

Subjects and Syllabus Coverage

Using Previous Papers as Mocks

Raw Marks, Normalised Marks, Score and Rank

What do you need right now?

Paper Structure

Question Types and Marking

Worked Marks Example

Subject and Option Reference

GATE IN Pattern FAQs

Paper and Sections

Marking and Results

Ask your question

Answered Questions

What are the eligibility criteria for different engineering programs?

Zollege Team

What is the fee structure for b.tech computer science and engineering at VIT University?

Zollege Team

What interdisciplinary research opportunities are available for graduate students at PRSU?

Rency

Upcoming exams

top courses

Also Check