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Previous year question hub

Digital Electronics - Instrumentation Engineering Previous Year Questions

Practice Digital Electronics - Instrumentation Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

21Papers
18Years
116Questions
1Topics

Digital Electronics question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Digital Electronics. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 65 56%
Easy 49 42.2%
Hard 2 1.7%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 97 83.6%
Numerical Answer Type (NAT) 12 10.3%
MSQ 4 3.4%
Fill in the blanks 3 2.6%

Subject weightage

Top subjects by unique question coverage.

Instrumentation Engineering
116 Qs

Most asked topics

Top topics across the included previous year papers.

Digital Electronics
116 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Logic Circuits and State Machines
76 Qs
Analog Front Ends and Data Converters
21 Qs
Embedded Systems, Data Acquisition and IoT
19 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Instrumentation Engineering (IN) 2026
5 Qs
Instrumentation Engineering (IN) 2025
5 Qs
Instrumentation Engineering (IN) 2024
3 Qs
Instrumentation Engineering (IN) 2023
6 Qs
Instrumentation Engineering (IN) 2022
6 Qs
Instrumentation Engineering (IN) 2021
6 Qs
Instrumentation Engineering (IN) 2020
6 Qs
Instrumentation Engineering (IN) 2019
6 Qs
Instrumentation Engineering (IN) 2018
8 Qs
Instrumentation Engineering (IN) 2017
3 Qs
Instrumentation Engineering (IN) 2016
6 Qs
Instrumentation Engineering (IN) 2014
4 Qs
Instrumentation Engineering (IN) 2013 [Session 2]
4 Qs
Instrumentation Engineering (IN) 2013 [Session 1]
3 Qs
Instrumentation Engineering (IN) 2013 [Session 3]
3 Qs
Instrumentation Engineering (IN) 2013 [Session 4]
3 Qs
Instrumentation Engineering (IN) 2011
7 Qs
Instrumentation Engineering (IN) 2010
5 Qs
Instrumentation Engineering (IN) 2009
8 Qs
Instrumentation Engineering (IN) 2008
11 Qs
Instrumentation Engineering (IN) 2007
8 Qs

Browse by subtopics

Open a focused page built from the same verified paper data.

Logic Circuits and State Machines

Explore previous-paper coverage, trends and focused practice for Logic Circuits and State Machines.

76 questions21 papers18 years

Analog Front Ends and Data Converters

Explore previous-paper coverage, trends and focused practice for Analog Front Ends and Data Converters.

21 questions12 papers12 years

Embedded Systems, Data Acquisition and IoT

Explore previous-paper coverage, trends and focused practice for Embedded Systems, Data Acquisition and IoT.

19 questions12 papers12 years

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Instrumentation Engineering (IN) 202620265View paper
Instrumentation Engineering (IN) 202520255View paper
Instrumentation Engineering (IN) 202420243View paper
Instrumentation Engineering (IN) 202320236View paper
Instrumentation Engineering (IN) 202220226View paper
Instrumentation Engineering (IN) 202120216View paper
Instrumentation Engineering (IN) 202020206View paper
Instrumentation Engineering (IN) 201920196View paper
Instrumentation Engineering (IN) 201820188View paper
Instrumentation Engineering (IN) 201720173View paper
Instrumentation Engineering (IN) 201620166View paper
Instrumentation Engineering (IN) 201420144View paper
Instrumentation Engineering (IN) 2013 [Session 1]20133View paper
Instrumentation Engineering (IN) 2013 [Session 2]20134View paper
Instrumentation Engineering (IN) 2013 [Session 3]20133View paper
Instrumentation Engineering (IN) 2013 [Session 4]20133View paper
Instrumentation Engineering (IN) 201120117View paper
Instrumentation Engineering (IN) 201020105View paper
Instrumentation Engineering (IN) 200920098View paper
Instrumentation Engineering (IN) 2008200811View paper
Instrumentation Engineering (IN) 200720078View paper

Sample previous year questions

A varied preview from the papers represented in this selection, with every available option.

1
2009 · Instrumentation Engineering · Digital Electronics · Logic Circuits and State Machines
Instrumentation Engineering (IN) 2009

The diodes in the circuit shown are ideal. A voltage of 0 V represents logic 0 and +5 V represents logic 1. The logic function Z realized by the circuit for logic inputs X and Y is

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2
2010 · Instrumentation Engineering · Digital Electronics · Embedded Systems, Data Acquisition and IoT
Instrumentation Engineering (IN) 2010
The subroutine SBX given below is executed by an 8085 processor. The value in the accumulator immediately after the execution of the subroutine will be:
SBX MVI A,99h
ADI 11h
MOV C,A
RET
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3
2011 · Instrumentation Engineering · Digital Electronics · Analog Front Ends and Data Converters
Instrumentation Engineering (IN) 2011
Figure below shows a circuit for implementing an 8-bit Digital-to-Analog converter (DAC) using two identical 4-bit DACs with equal reference voltages. Assume that \(b_0\) represents LSB, \(b_7\) MSB and the opamp is ideal. To obtain correct analog values corresponding to an 8-bit DAC at the output \(V_O\), the value of resistor R is
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4
2013 · Instrumentation Engineering · Digital Electronics · Logic Circuits and State Machines
Instrumentation Engineering (IN) 2013 [Session 1]

A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles

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