**DRDO Scientist/ Engineer ‘B’ Exam Pattern And Syllabus 2021 – Electronics And Communication Engineering**

In this article we are sharing the syllabus of DRDO/DST/ADA/GAETEC Electronics and Communication Engineering i.e Recruitment And Assessment Centre (RAC – DRDO) electronics and communication Engineering (EC) syllabus for the post of DRDO/DST/ADA/GAETEC Scientist/Engineer ‘B’ exam 2021

**How To Download DRDO Scientist/Engineer B Syllabus 2021 –**

- Aspirants first need to open the ISRO site
**www.****rac.gov.in** - On the Home Page, the candidate needs to find the link to RAC Syllabus link.
- After finding it open it in a new tab.
- Then click on DRDO Scientist/Engineer syllabus pdf format link.
- Download it and keep it for further preparation.

**ISRO Scientist/ Engineer ‘SC’ Exam 2021 Syllabus – Electronics And Communication Engineering**

**Syllabus of the Descriptive Examination for Recruitment of Scientist ‘B’ in Electronics And Communication
**

**PAPER‐I**

**1. Basic Electronics Engineering:**

Basics of semiconductors; Diode/Transistor basics and characteristics; Diodes for different uses; Junction & Field Effect Transistors (BJTs, JFETs, MOSFETs); Transistor amplifiers of different types, oscillators and other circuits; Basics of Integrated Circuits (ICs); Bipolar, MOS and CMOS ICs; Basics of linear ICs, operational amplifiers and their applications-linear/non-linear; Optical sources/detectors; Basics of Opto electronics and its applications.

**2. Basic Electrical Engineering:**

DC circuits-Ohm’s & Kirchoff’s laws, mesh and nodal analysis, circuit theorems; Electro-magnetism, Faraday’s & Lenz’s laws, induced EMF and its uses; Single-phase AC circuits; Transformers, efficiency; Basics-DC machines, induction machines, and synchronous machines; Electrical power sources- basics: hydroelectric, thermal, nuclear, wind, solar; Basics of batteries and their uses.

3. Materials Science:

Electrical Engineering materials; Crystal structure & defects; Ceramic materials-structures, composites, processing and uses; Insulating laminates for electronics, structures, properties and uses; Magnetic materials, basics, classification, ferrites, ferro/para-magnetic materials and components; Nano materials-basics, preparation, purification, sintering, nano particles and uses; Nano-optical/magnetic/electronic materials and uses; Superconductivity, uses.

**4. Electronic Measurements and Instrumentation:**

Principles of measurement, accuracy, precision and standards; Analog and Digital systems for measurement, measuring instruments for different applications; Static/dynamic characteristics of measurement systems, errors, statistical analysis and curve fitting; Measurement systems for nonelectrical quantities; Basics of telemetry; Different types of transducers and displays; Data acquisition system basics.

**5. Network Theory:**

Network graphs & matrices; Wye-Delta transformation; Linear constant coefficient differential equations- time domain analysis of RLC circuits; Solution of network equations using Laplace transforms- frequency domain analysis of RLC circuits;

2-port network parameters-driving point & transfer functions; State equations for networks; Steady state sinusoidal analysis.

**6. Analog and Digital Circuits:**

Small signal equivalent circuits of diodes, BJTS and FETs; Diode circuits for different uses; Biasing & stability of BJT & JFET amplifier circuits; Analysis/design of amplifier- single/multi-stage; Feedback& uses; Active filters, timers, multipliers, wave shaping, A/D-D/A converters; Boolean Algebra& uses; Logic gates, Digital IC families, Combinatorial/sequential circuits; Basics of multiplexers, counters/registers/ memories /microprocessors, design& applications.

**PAPER‐II**

**1. Analog and Digital Communication Systems:**

Random signals, noise, probability theory, information theory; Analog versus digital communication & applications: Systems- AM, FM, transmitters/receivers, theory/practice/ standards, SNR comparison; Digital communication basics: Sampling, quantizing, coding, PCM, DPCM, multiplexing-audio/video; Digital modulation: ASK, FSK, PSK; Multiple access: TDMA, FDMA, CDMA; Optical communication: fibre optics, theory, practice/standards.

**2. Control Systems:**

Classification of signals and systems; Application of signal and system theory; System realization; Transforms& their applications; Signal flow graphs, Routh-Hurwitz criteria, root loci, Nyquist/Bode plots; Feedback systems-open &close loop types, stability analysis, steady state, transient and frequency response analysis; Design of control systems, compensators, elements of lead/lag compensation, PID and industrial controllers.

**3. Computer Organization and Architecture:**

Basic architecture, CPU, I/O organisation, memory organisation, peripheral devices, trends; Hardware /software issues; Data representation& Programming; Operating systems-basics, processes, characteristics, applications; Memory management, virtual memory, file systems, protection & security; Data bases, different types, characteristics and design; Transactions and

concurrency control; Elements of programming languages, typical examples.

**4. Electro Magnetics:**

Elements of vector calculus, Maxwell’s equations-basic concepts; Gauss’, Stokes’ theorems; Wave propagation through different media; Transmission Lines-different types, basics, Smith’s chart, impedance matching/transformation, S-parameters, pulse excitation, uses; Waveguides-basics, rectangular types, modes, cut-off frequency, dispersion, dielectric types; Antennas-radiation pattern, monopoles/dipoles, gain, arrays-active/passive, theory, uses.

**5. Advanced Electronics Topics:**

VLSI technology: Processing, lithography, interconnects, packaging, testing; VLSI design: Principles, MUX/ROM/PLA-based design, Moore & Mealy circuit design; Pipeline concepts & functions; Design for testability, examples; DSP: Discrete time signals/systems, uses; Digital filters: FIR/IIR types, design, speech/audio/radar signal processing uses; Microprocessors & microcontrollers, basics, interrupts, DMA, instruction sets, interfacing; Controllers & uses; Embedded systems.

**6. Advanced Communication Topics:**

Communication networks: Principles /practices /technologies /uses /OSI model/security; Basic packet multiplexed streams/scheduling; Cellular networks, types, analysis, protocols (TCP/TCPIP); Microwave & satellite communication: Terrestrial/space type LOS systems, block schematics link calculations, system design; Communication satellites, orbits, characteristics, systems, uses; Fibreoptic communication systems, block schematics, link calculations, system design.