Free GATE Instrumentation Engineering (IN) Online Test Series 2027
Preparing for the Instrumentation Engineering (IN) paper requires a thorough understanding of measurement techniques, control systems, analog and digital electronics, sensors, electrical circuits, and signal processing. The Free GATE Instrumentation Engineering (IN) Online Test Series 2027 helps aspirants strengthen these concepts through chapter-wise practice tests, topic-wise quizzes, subject-wise assessments, and full-length mock examinations based on the latest GATE examination pattern.
GATE 2026 IN Section 1: Engineering Mathematics Test Series Online
GATE 2026 IN Test Series for Engineering Mathematics covers Linear Algebra, Calculus, Differential Equations, Complex Variables, Probability and Statistics, and Numerical Methods.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Matrix algebra | Start Test | Systems of linear equations | Start Test |
| Consistency and rank | Start Test | Eigenvalues | Start Test |
| Eigenvectors | Start Test | Mean value theorems | Start Test |
| Theorems of integral calculus | Start Test | Partial derivatives | Start Test |
| Maxima and minima | Start Test | Multiple integrals | Start Test |
| Fourier series | Start Test | Vector identities | Start Test |
| Line integrals | Start Test | Surface integrals | Start Test |
| Volume integrals | Start Test | Stokes theorem | Start Test |
| Gauss theorem | Start Test | Green’s theorem | Start Test |
| First order linear differential equations | Start Test | First order nonlinear differential equations | Start Test |
| Second order linear differential equations with constant coefficients | Start Test | Method of variation of parameters | Start Test |
| Cauchy’s equation | Start Test | Euler’s equation | Start Test |
| Initial value problems | Start Test | Boundary value problems | Start Test |
| Variable separable method (PDE) | Start Test | Analytic functions | Start Test |
| Cauchy’s integral theorem | Start Test | Cauchy’s integral formula | Start Test |
| Taylor’s series | Start Test | Laurent’s series | Start Test |
| Residue theorem | Start Test | Solution of integrals | Start Test |
| Sampling theorems | Start Test | Conditional probability | Start Test |
| Mean | Start Test | Median | Start Test |
| Mode | Start Test | Standard deviation | Start Test |
| Variance | Start Test | Discrete random variables | Start Test |
| Continuous random variables | Start Test | Normal distribution | Start Test |
| Poisson distribution | Start Test | Binomial distribution | Start Test |
| Matrix inversion | Start Test | Solutions of non-linear algebraic equations | Start Test |
| Iterative methods for differential equations | Start Test | Numerical integration | Start Test |
| Regression analysis | Start Test | Correlation analysis | Start Test |
GATE 2026 IN Section 2: Electricity and Magnetism Test Series Online
GATE 2026 IN Test Series for Electricity and Magnetism covers Coulomb’s Law, Electric Field Intensity, Electric Flux Density, Gauss’s Law, Divergence, Electric field and potential due to various charge distributions, Effect of dielectric medium, Capacitance, Biot‐Savart’s law, Ampere’s law, Curl, Faraday’s law, Lorentz force, Inductance, Magnetomotive force, Reluctance, Magnetic circuits, Self and Mutual inductance.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Coulomb’s Law | Start Test | Electric Field Intensity | Start Test |
| Electric Flux Density | Start Test | Gauss’s Law | Start Test |
| Divergence | Start Test | Electric field due to point charge | Start Test |
| Electric field due to line charge | Start Test | Electric field due to plane charge | Start Test |
| Electric field due to spherical charge | Start Test | Potential due to point charge | Start Test |
| Potential due to line charge | Start Test | Potential due to plane charge | Start Test |
| Potential due to spherical charge | Start Test | Effect of dielectric medium | Start Test |
| Capacitance of simple configurations | Start Test | Biot‐Savart’s law | Start Test |
| Ampere’s law | Start Test | Curl | Start Test |
| Faraday’s law | Start Test | Lorentz force | Start Test |
| Inductance | Start Test | Magnetomotive force | Start Test |
| Reluctance | Start Test | Magnetic circuits | Start Test |
| Self inductance | Start Test | Mutual inductance | Start Test |
GATE 2026 IN Section 3: Electrical Circuits and Machines Test Series Online
GATE 2026 IN Test Series for Electrical Circuits and Machines covers Voltage and Current Sources, v-i relationships of R, L, C, Mutual inductance, Transient analysis of RLC circuits, Kirchoff’s laws, Mesh and nodal analysis, Network theorems, AC quantities, Phasor analysis, Resonance, Locus diagrams, Filters, One-port and two-port networks, Single Phase Transformer, and Three phase induction motors.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Independent voltage sources | Start Test | Dependent voltage sources | Start Test |
| Independent current sources | Start Test | Dependent current sources | Start Test |
| Ideal and practical sources | Start Test | v-i relationships of resistor | Start Test |
| v-i relationships of inductor | Start Test | v-i relationships of capacitor | Start Test |
| Mutual inductance | Start Test | Transient analysis of RLC circuits (DC) | Start Test |
| Kirchoff’s laws | Start Test | Mesh analysis | Start Test |
| Nodal analysis | Start Test | Superposition theorem | Start Test |
| Thevenin theorem | Start Test | Norton theorem | Start Test |
| Maximum power transfer theorem | Start Test | Reciprocity theorem | Start Test |
| Peak value of AC quantities | Start Test | Average value of AC quantities | Start Test |
| RMS value of AC quantities | Start Test | Apparent power | Start Test |
| Active power | Start Test | Reactive power | Start Test |
| Phasor analysis | Start Test | Impedance and admittance | Start Test |
| Series resonance | Start Test | Parallel resonance | Start Test |
| Locus diagrams | Start Test | Realization of basic filters | Start Test |
| Transient analysis of RLC circuits (AC) | Start Test | One-port networks | Start Test |
| Two-port networks | Start Test | Driving point impedance | Start Test |
| Driving point admittance | Start Test | Open circuit parameters | Start Test |
| Short circuit parameters | Start Test | Single Phase Transformer – Equivalent circuit | Start Test |
| Single Phase Transformer – Phasor diagram | Start Test | Open circuit test | Start Test |
| Short circuit test | Start Test | Transformer regulation | Start Test |
| Transformer efficiency | Start Test | Three phase induction motors – Principle | Start Test |
| Three phase induction motors – Types | Start Test | Induction motor performance | Start Test |
| Torque-speed characteristics | Start Test | No-load test | Start Test |
| Blocked rotor test | Start Test | Induction motor equivalent circuit | Start Test |
| Starting of induction motors | Start Test | Speed control of induction motors | Start Test |
| Types of losses | Start Test | Efficiency calculations | Start Test |
GATE 2026 IN Section 4: Signals and Systems Test Series Online
GATE 2026 IN Test Series for Signals and Systems covers Periodic, aperiodic and impulse signals; Laplace, Fourier and z-transforms; Transfer function, Frequency response of first and second order LTI systems, Impulse response, Convolution, Correlation; Discrete time system (impulse response, frequency response, pulse transfer function); DFT and FFT; Basics of IIR and FIR filters.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Periodic signals | Start Test | Aperiodic signals | Start Test |
| Impulse signals | Start Test | Laplace transform | Start Test |
| Fourier transform | Start Test | z-transform | Start Test |
| Transfer function | Start Test | Frequency response of first order LTI systems | Start Test |
| Frequency response of second order LTI systems | Start Test | Impulse response of systems | Start Test |
| Convolution | Start Test | Correlation | Start Test |
| Discrete time system – Impulse response | Start Test | Discrete time system – Frequency response | Start Test |
| Pulse transfer function | Start Test | DFT | Start Test |
| FFT | Start Test | Basics of IIR filters | Start Test |
| Basics of FIR filters | Start Test |
GATE 2026 IN Section 5: Control Systems Test Series Online
GATE 2026 IN Test Series for Control Systems covers Feedback principles, Signal flow graphs, Transient response, Steady-state-errors, Bode plot, Phase and gain margins, Routh and Nyquist criteria, Root loci, Lead/lag/lead-lag compensators, State-space representation, Time-delay systems, Mechanical/hydraulic/pneumatic components, Synchro pair, Servo and stepper motors, Servo valves, Controllers (on-off, P, PI, PID, cascade, feed forward, ratio), PID tuning and control valve sizing.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Feedback principles | Start Test | Signal flow graphs | Start Test |
| Transient response | Start Test | Steady-state-errors | Start Test |
| Bode plot | Start Test | Phase and gain margins | Start Test |
| Routh stability criterion | Start Test | Nyquist stability criterion | Start Test |
| Root loci | Start Test | Lead compensator design | Start Test |
| Lag compensator design | Start Test | Lead-lag compensator design | Start Test |
| State-space representation | Start Test | Time-delay systems | Start Test |
| Mechanical system components | Start Test | Hydraulic system components | Start Test |
| Pneumatic system components | Start Test | Synchro pair | Start Test |
| Servo motors | Start Test | Stepper motors | Start Test |
| Servo valves | Start Test | On-off controller | Start Test |
| P controller | Start Test | PI controller | Start Test |
| PID controller | Start Test | Cascade controller | Start Test |
| Feed forward controller | Start Test | Ratio controller | Start Test |
| Tuning of PID controllers | Start Test | Sizing of control valves | Start Test |
GATE 2026 IN Section 6: Analog Electronics Test Series Online
GATE 2026 IN Test Series for Analog Electronics covers Characteristics and applications of diode, Zener diode, BJT and MOSFET; Small signal analysis of transistor circuits, Feedback amplifiers; Characteristics of ideal and practical op-amps; Applications of op-amps (adder, subtractor, integrator, differentiator, difference amplifier, instrumentation amplifier, precision rectifier, active filters, oscillators, signal generators, VCO, PLL); Sources and effects of noise and interference.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Diode – Characteristics | Start Test | Diode – Applications | Start Test |
| Zener diode – Characteristics | Start Test | Zener diode – Applications | Start Test |
| BJT – Characteristics | Start Test | BJT – Applications | Start Test |
| MOSFET – Characteristics | Start Test | MOSFET – Applications | Start Test |
| Small signal analysis of transistor circuits | Start Test | Feedback amplifiers | Start Test |
| Ideal operational amplifier characteristics | Start Test | Practical operational amplifier characteristics | Start Test |
| Op-amp adder | Start Test | Op-amp subtractor | Start Test |
| Op-amp integrator | Start Test | Op-amp differentiator | Start Test |
| Difference amplifier | Start Test | Instrumentation amplifier | Start Test |
| Precision rectifier | Start Test | Active filters | Start Test |
| Oscillators | Start Test | Signal generators | Start Test |
| Voltage controlled oscillators | Start Test | Phase locked loop | Start Test |
| Sources of noise | Start Test | Effects of noise and interference | Start Test |
GATE 2026 IN Section 7: Digital Electronics Test Series Online
GATE 2026 IN Test Series for Digital Electronics covers Combinational logic circuits, Minimization of Boolean functions, IC families (TTL, CMOS), Arithmetic circuits, Comparators, Schmitt trigger, Multi-vibrators, Sequential circuits, Flipflops, Shift registers, Timers, Counters, Sample-and-hold circuit, Multiplexer, ADC (successive approximation, integrating, flash, sigma-delta), DAC (weighted R, R-2R ladder, current steering), ADC/DAC characteristics, Number systems, Embedded Systems (microprocessor, microcontroller, memory and I/O interfacing), Data acquisition systems, DCS and PLC.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Combinational logic circuits | Start Test | Minimization of Boolean functions | Start Test |
| TTL IC family | Start Test | CMOS IC family | Start Test |
| Arithmetic circuits | Start Test | Comparators | Start Test |
| Schmitt trigger | Start Test | Multi-vibrators | Start Test |
| Sequential circuits | Start Test | Flipflops | Start Test |
| Shift registers | Start Test | Timers | Start Test |
| Counters | Start Test | Sample-and-hold circuit | Start Test |
| Multiplexer | Start Test | Successive approximation ADC | Start Test |
| Integrating ADC | Start Test | Flash ADC | Start Test |
| Sigma-delta ADC | Start Test | Weighted R DAC | Start Test |
| R-2R ladder DAC | Start Test | Current steering DAC | Start Test |
| ADC characteristics (resolution) | Start Test | ADC characteristics (quantization) | Start Test |
| ADC characteristics (significant bits) | Start Test | ADC characteristics (conversion time) | Start Test |
| DAC characteristics (resolution) | Start Test | DAC characteristics (settling time) | Start Test |
| Number systems | Start Test | Microprocessor applications | Start Test |
| Microcontroller applications | Start Test | Memory interfacing | Start Test |
| Input-output interfacing | Start Test | Data acquisition systems | Start Test |
| Distributed control systems (DCS) | Start Test | Programmable logic controllers (PLC) | Start Test |
GATE 2026 IN Section 8: Measurements Test Series Online
GATE 2026 IN Test Series for Measurements covers SI units, Standards, Systematic and random errors, Uncertainty analysis, Bridges (Wheatstone, Kelvin, Megohm, Maxwell, Anderson, Schering, Wien), Q-meter, Measurement of voltage, current and power in single and three phase circuits, AC/DC current probes, True RMS meters, Instrument transformers, Timer/counter, Time/phase/frequency measurements, Digital voltmeter, Digital multimeter, Oscilloscope, Shielding and grounding.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| SI units | Start Test | Standards (R, L, C) | Start Test |
| Standards (voltage, current, frequency) | Start Test | Systematic errors | Start Test |
| Random errors | Start Test | Uncertainty – Accuracy | Start Test |
| Uncertainty – Precision | Start Test | Propagation of errors | Start Test |
| Linear regression | Start Test | Weighted regression | Start Test |
| Wheatstone bridge | Start Test | Kelvin bridge | Start Test |
| Megohm bridge | Start Test | Maxwell bridge | Start Test |
| Anderson bridge | Start Test | Schering bridge | Start Test |
| Wien bridge | Start Test | Q-meter | Start Test |
| Voltage measurement (single phase) | Start Test | Current measurement (single phase) | Start Test |
| Power measurement (single phase) | Start Test | Voltage measurement (three phase) | Start Test |
| Current measurement (three phase) | Start Test | Power measurement (three phase) | Start Test |
| AC current probes | Start Test | DC current probes | Start Test |
| True RMS meters | Start Test | Voltage scaling | Start Test |
| Current scaling | Start Test | Instrument transformers | Start Test |
| Timer/Counter | Start Test | Time measurement | Start Test |
| Phase measurement | Start Test | Frequency measurement | Start Test |
| Digital voltmeter | Start Test | Digital multimeter | Start Test |
| Oscilloscope | Start Test | Shielding | Start Test |
| Grounding | Start Test |
GATE 2026 IN Section 9: Sensors and Industrial Instrumentation Test Series Online
GATE 2026 IN Test Series for Sensors and Industrial Instrumentation covers Resistive, Capacitive, Inductive, Piezoelectric, Hall effect sensors and signal conditioning circuits; Transducers for displacement, velocity, acceleration, force, torque, vibration, shock, pressure, flow, temperature, liquid level, pH, conductivity, viscosity; 4-20 mA two-wire transmitter.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Resistive sensors | Start Test | Capacitive sensors | Start Test |
| Inductive sensors | Start Test | Piezoelectric sensors | Start Test |
| Hall effect sensors | Start Test | Signal conditioning circuits | Start Test |
| Displacement transducer (linear) | Start Test | Displacement transducer (angular) | Start Test |
| Velocity transducer | Start Test | Acceleration transducer | Start Test |
| Force transducer | Start Test | Torque transducer | Start Test |
| Vibration transducer | Start Test | Shock transducer | Start Test |
| Pressure transducer | Start Test | Low pressure measurement | Start Test |
| Variable head flow meter | Start Test | Variable area flow meter | Start Test |
| Electromagnetic flow meter | Start Test | Ultrasonic flow meter | Start Test |
| Turbine flow meter | Start Test | Open channel flow meter | Start Test |
| Thermocouple | Start Test | Bolometer | Start Test |
| RTD (3 wire) | Start Test | RTD (4 wire) | Start Test |
| Thermistor | Start Test | Pyrometer | Start Test |
| Semiconductor temperature sensor | Start Test | Liquid level measurement | Start Test |
| pH measurement | Start Test | Conductivity measurement | Start Test |
| Viscosity measurement | Start Test | 4-20 mA two-wire transmitter | Start Test |
GATE 2026 IN Section 10: Communication and Optical Instrumentation Test Series Online
GATE 2026 IN Test Series for Communication and Optical Instrumentation covers Amplitude and Frequency modulation and demodulation, Shannon’s sampling theorem, PCM, FDM, TDM, Digital modulation (ASK, PSK, FSK, QAM, P SK), Optical sources and detectors (LED, laser, photo-diode, LDR), Interferometer applications, Fiber optic sensing, UV-VIS Spectrophotometers, and Mass spectrometer.
| Sub-Topic | Topic Test Link | Sub-Topic | Topic Test Link |
|---|---|---|---|
| Amplitude modulation | Start Test | Amplitude demodulation | Start Test |
| Frequency modulation | Start Test | Frequency demodulation | Start Test |
| Shannon’s sampling theorem | Start Test | Pulse code modulation | Start Test |
| Frequency division multiplexing | Start Test | Time division multiplexing | Start Test |
| Amplitude shift keying (ASK) | Start Test | Phase shift keying (PSK) | Start Test |
| Frequency shift keying (FSK) | Start Test | Quadrature amplitude modulation (QAM) | Start Test |
| Pulse shift keying | Start Test | LED – Characteristics | Start Test |
| Laser – Characteristics | Start Test | Photo-diode – Characteristics | Start Test |
| Light dependent resistor (LDR) | Start Test | Square law detectors | Start Test |
| Interferometer – Metrology applications | Start Test | Fiber optic sensing | Start Test |
| UV-VIS Spectrophotometer | Start Test | Mass spectrometer | Start Test |
Regular practice with online mock tests enables candidates to evaluate their preparation, improve numerical problem-solving skills, and develop effective time management. By analyzing test performance after every attempt, aspirants can identify weak topics, revise important concepts, and increase their confidence before the examination.
Free GATE Instrumentation Engineering (IN) Test Series 2027 Overview
| Particular | Details |
|---|---|
| Examination | GATE 2027 |
| Paper Code | IN |
| Subject | Instrumentation Engineering |
| Test Mode | Online |
| Test Types | Chapter-wise, Topic-wise, Subject-wise & Full-Length Mock Tests |
| Cost | Free |
| Question Pattern | Based on the Latest GATE Examination Pattern |
| Suitable For | GATE IN Aspirants |
Why Practice the GATE IN Online Test Series?
The Instrumentation Engineering paper contains conceptual, analytical, and numerical questions that test both theoretical knowledge and practical problem-solving abilities. Solving online mock tests regularly helps candidates become familiar with the examination pattern while improving speed, accuracy, and confidence. Continuous practice also allows aspirants to monitor their preparation level and revise important concepts effectively.
Key benefits include:
- Free online mock tests
- Chapter-wise practice
- Topic-wise quizzes
- Subject-wise mock tests
- Full-length online examinations
- Better speed and time management
- Detailed performance analysis
- Complete revision support
Features of the Free GATE IN Mock Tests
The mock tests are designed to simulate the actual examination experience and help candidates prepare more effectively. Every test focuses on improving conceptual understanding while allowing aspirants to track their progress throughout the preparation journey.
The test series offers:
- Chapter-wise practice tests
- Topic-wise question banks
- Subject-wise mock examinations
- Full-length online tests
- Instant score and performance analysis
- Latest GATE examination pattern
- Unlimited online practice
- Mobile and desktop compatibility
How to Use the GATE IN Test Series for Better Preparation
Begin your preparation by studying one Instrumentation Engineering subject at a time, such as Measurements, Sensors and Transducers, Analog Electronics, Digital Electronics, Electrical Circuits, Control Systems, Signals and Systems, Process Control, Microprocessors, or Engineering Mathematics. After completing each topic, attempt the corresponding chapter-wise mock tests to evaluate your conceptual understanding and identify mistakes.
Once several subjects are covered, solve subject-wise mock tests to strengthen your preparation across larger portions of the syllabus. After completing the entire IN syllabus, regularly attempt full-length mock examinations under timed conditions to simulate the actual GATE examination. Review every incorrect answer carefully, revise important formulas and concepts, and continue practicing consistently to improve your speed, accuracy, confidence, and overall GATE IN score.
Conclusion
Success in the Instrumentation Engineering paper depends on conceptual clarity, regular revision, and consistent practice. Solving free online mock tests throughout your preparation will help you improve problem-solving skills, strengthen weak areas, and build the confidence needed to achieve a higher score in GATE 2027.