19 Nov 2021

GATE 2021 Instrumentation Paper Analysis

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GATE Instrumentation 2021 Paper Analysis: Access Difficulty Level, Attempts & Questions

GATE 2021 Instrumentation Engineering was conducted in the morning session of 06 February 2021. The exam started at 9.30 am and concluded at 12:30 PM. Instrumentation question paper had a total number of 65 questions, and the paper was divided into two sections i.e General Aptitude and Instrumentation Engineering (subject). The instrumentation paper was easy to moderate in terms of the difficulty level. There were only 4 MSQs while the number of NAT was 30. The detailed GATE 2021 IN Exam analysis for Instrumentation engineering could be checked in our blog. The answers to the GATE IN question paper are available through the GATE 2021 Official Answer key in this blog. GATE 2021 result was released on March 22, 2021.
Our blog will provide section-wise marks allotment, questions, and difficulty level of the GATE IN Exam. It will help candidates to prepare a robust and good study plan for the GATE exam 2022. It gives you the right knowledge on topics that are difficult yet high-scoring and need constant practice from the GATE exam point of view. You can accordingly prepare a study plan based on the GATE 2022 syllabus for Instrumentation engineering and start preparing for it. GATE 2022 Exam Date – GATE 2022 will be conducted by IIT Kharagpur on 5, 6, 12, and 13 February 2022. For complete details, you can visit IIT Kharagpur or follow the latest blogs on
To know the complete GATE instrumentation syllabus and best GATE instrumentation books you can visit Ekeeda – India’s top engineering app for aspirants. In this blog, we have given a detailed GATE 2021 Instrumentation Paper Analysis.

Why GATE 2021 Instrumentation Paper Analysis?

  • When you know the answer key, you will get an overview of weightage, the difficulty level of the examination.

  • The GATE Examination is conducted for 100 marks and a total number of 65 questions

  • It will help you understand the type of questions, topics/sub-topics – difficult ones, easy scoring, and marks division for each topic. 

  • It will let you know the exact GATE 2022 syllabus for Instrumentation.

Since it was conducted by IIT Mumbai the GATE 2021 IN answer key was also released by IIT, Mumbai. Meanwhile, various coaching centers had released individual answer keys and solutions to the exam papers. While these were termed as unofficial GATE answer keys the official GATE answer key along with the question paper was also available at gate.iitb.ac.in. Students were able to raise objections against the answer keys in case of any discrepancies by making a payment of INR 500.
Highlights Of GATE Instrumentation Engineering (IN)

Paper Code


Exam Date

06 February 2021

Number of Shifts/ Sessions


Paper Shift/ Session

Morning session (9:30- 12:30 hrs)

Number of Questions    


Maximum Marks



General Aptitude, Engineering Mathematics and Instrumentation

GATE 2021 Paper Analysis: Instrumentation Engineering
According to the candidate’s initial experience, the paper was supposed to be easy-to-moderate in terms of difficulty level. Candidates will be able to know about the experience along with the difficulty level of the exam, section-wise difficulty, highest weightage topics asked, etc.

  • IN paper was easy to moderate in terms of difficulty level

  • There were only 4-5 MSQs

  • And major topics included Rectifier, Diode, Control System



Overall Difficulty Level

Easy to Moderate

Number of MCQs


Number of MSQs


Number of NATs


Topics with most Weightage

Measurements, Transducers, Analog Electronics, Signal & System, Digital Circuit

GATE IN Topic-Wise Weightage 
Based on the projections candidates can find the GATE IN subject-wise weightage for some topics given below:

GATE IN Topics


Number Of Questions

Sub-Topics Covered

Total Marks

General Aptitude





Engineering Mathematics 



Complex variable Probability density, limit, Determinant function


Network Theory





Digital Circuits



ATOD or D/A converter, flash type ADC, multiplexer


Signals and Systems



Laplace transformer, Basic properties of signal


Control Systems



Time response Analysis





AC, bridge


Analog Circuits 



Application of op-amp amplifier










 Pressure measurement, temperature measurement, resistive, capacitive and inductive transducer 


Optical Instrumentation 



Laser, optical fiber, interferometer


Process Control



PID controller


Electromagnetic Theory



Line current, magnetic circuit


Electrical Machine










GATE 2020 IN Exam Paper Analysis
Candidates can also use the previous year GATE IN exam paper analysis to know the type of questions that will be asked, difficulty level of question paper, etc, They can use this exam paper analysis to know the topics that were most commonly asked, the scoring marks and how to prepare for them accordingly.
Key Highlights Of GATE IN Exam 2020

  • Exam Timings – From 09:30 am to 12:30 pm

  • Difficulty Level: Easy to Moderate

  • General aptitude section was relatively easy and had direct questions

  • IN Paper had questions from Network and Control Systems & Signals that were to solve.

  • Questions from Digital and Micro Processor, Optical Instrumentation, Transducer, and Measurements, along with Engineering Mathematics were moderately difficult.

  • Analog circuits and Communication Systems were quite difficult to attempt

  • Networks and Digital & Micro Processor carried 10 and 11 marks respectively

  • Communication System, Optical Instrumentation, Control Systems, Transducer, Signal & Systems, Measurements carried 6 to 8 marks in the exam.

Steps To Download GATE 2021 IN Question Paper
Here is the step-by-step procedure to download the question paper:

  • Visit the official website

  • Search for the link to download the GATE IN 2021 question paper

  • Click on it and PDF will open in a new tab

  • After that, click on the download and save it on your phone or computer

  • Open the question paper PDF after it downloads successfully

Also, you can download the GATE 2021 IN question paper & answer keys with the direct link given below:

Steps To Challenge GATE 2021 IN Answer Key:

  • Log into the GATE Online Application Processing System (GOAPS)

  • Go through the guidelines given carefully

  • Agree by clicking on the declaration

  • Click on the “Contest Answer Key" tab to be able to pay and mail objections related to the answer.

  • Pay INR 500 via an online portal provided for every question. NRI candidates will need to pay US $10 per question being challenged.

  • Use the correct question number given in the question paper to challenge.

  • Attach a justified proof for challenging the answer key.

Step To Calculate GATE Score using IN answer key:

  • Calculate the marks obtained in the correct answers & subtract the marks lost in incorrect answers due to negative marking.

  • The numerical questions have no negative marking.

  • GATE Score = Marks obtained for MCQs + Marks obtained for NAT questions

  • MCQ Marks: Total marks (1 marks) + Total marks (2 marks)

  • Total marks (1 marks) = 1 x number of correct answers – 1/3 x number of wrong answers

  • Total marks (2 marks) = 2 x number of correct answers – 2/3 x number of wrong answers

  • NAT Marks: Total marks (1 marks) + Total marks (2 marks)

GATE Instrumentation Cutoff

  • GATE Participating Institutes (IITs, NITs and other colleges) will declare their separate GATE cutoffs.

  • GATE Cutoffs will be separate for qualifying the exam and for the admissions.

  • Since no common GATE counselling is held, each participating institute determine cut off to shortlist candidates for admissions.

Expected GATE 2021 Cut Off (Instrumentation)

Engineering Branch




Instrumentation Engineering




About GATE IN 2022 Paper Analysis

  • GATE IN 2022 question paper analysis will be done by Ekeeda experts once the exam is conducted by IIT Kharagpur in February 2022. GATE Instrumentation exam analysis will feature the marking scheme, difficulty level, new types of questions, good attempts, and memory-based questions. 

  • GATE will be conducted in February 2022, and the GATE 2022 notification has been released by IIT Kharagpur in August 2021. 

  • Aspirants can follow our latest blog to get a complete GATE Instrumentation exam paper analysis.

  • GATE IN paper analysis 2022 will be shared by our educators and it will contain subject-wise analysis that will help you to determine your overall performance in the examination. 

To give your preparation an edge over the competition, start watching and learning from the meticulously planned GATE IN online lectures by top educators at Ekeeda. These online courses and GATE Instrumentation notes have been prepared while keeping in mind the latest exam trends & difficulty levels. Other than this, candidates will get access to a host of facilities such as PDF notes, online mocks for GATE IN 2022, model/previous year question papers, live lectures to instantly clarify their doubts. Sign up with Ekeeda and take a free trial today. Hurry! Boost your GATE preparation online today!

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