(SEM 1) THEORY EXAMINATION 2020-21 EMERGING DOMAIN IN ELECTRONICS ENGINEERING

This is the official B.Tech 1st Semester (AKTU) Theory Examination 2020–21 Question Paper for the subject Emerging Domain in Electronics Engineering (Subject Code: KEC101T). It is a full 100-mark, 3-hour university exam paper designed to test a student’s fundamental and applied understanding of electronics, semiconductor devices, digital circuits, communication systems, IoT, MOSFETs, OPAMPs, rectifiers, logic gates, boolean algebra, and emerging technologies in electronics.

This paper follows the complete AKTU exam structure and is extremely helpful for students preparing for semester exams, internal assessments, competitive exams, and revision of first-year electronics concepts.

Detailed Breakdown of the Question Paper

SECTION A – Very Short Answer Questions (10×2 = 20 Marks)

This section contains 10 short questions, ideal for quick revision of core concepts. Topics include:

Doping in semiconductors & its importance

Advantages of modulation

Number system conversion

VI characteristics of ideal diode

Microprocessor vs microcontroller

Bridge rectifier vs center-tapped rectifier

FET vs BJT differences

Avalanche vs zener breakdown

1’s and 2’s complement

Bluetooth vs Wi-Fi

These questions test basic understanding of electronics and communication fundamentals.

SECTION B – Short Answer / Numerical Questions (3×10 = 30 Marks)

Students must attempt any 3 out of 5 questions. Topics include:

Working of full-wave bridge rectifier + ripple factor

Voltage doubler circuit + varactor diode

Zener diode current calculation

Liquid crystal displays (LCDs) + waveform analysis

Output waveform analysis + transistor amplification relationships

This section includes both numerical and descriptive questions, ideal for mid-level practice.

SECTION C – Long Answer & Applied Questions (5×10 = 50 Marks)

Students must attempt one part from each question. Each part focuses on detailed explanations, circuit diagrams, characteristics, and derivations.

Question 3 – BJT & MOSFET

NPN transistor construction + CE configuration characteristics
OR

Enhancement vs depletion MOSFET + construction + characteristics

Question 4 – OPAMP & IoT

OPAMP block diagram + ideal characteristics + differentiator circuit
OR

IoT concept + components + definitions of CMRR & PIV

Question 5 – Boolean Algebra & K-map

Simplification using K-map + logic implementation
OR

Boolean conversions (Sum → Product), binary/decimal/octal/hex conversions

Question 6 – Communication Systems

Amplitude modulation + waveforms + carrier power calculation
OR

Satellite communication + CDMA vs GSM

Question 7 – Logic Gates & Circuits

Universal gates + XOR using NAND
OR

Output analysis of given logic circuits

This section builds deep understanding of electronics engineering principles and problem-solving.