Sigma group educational academy with its experience in the field of engineering studies have decided to start coaching for ISRO examination for the recruitment for scientists in Electronics. ISRO recruits for the post of scientist / engineer every year. 35 vacancies are reported this year. ISRO offers the position of Scientist/Engineer `SC’ in the level 10 of pay matrix to the young graduates ( Basic Pay Rs 56100/-). The age limit in appearing this examination is 35 years. Not only the one who have degree in their hand but those final year students also can apply for this examination.

For the post of scientist/ engineer the recruitment procedure is conducted in two stages, written test and interview. Based on the performance in the Written Test, candidates will be short-listed for interview. Written test is only a first level screening. Final selection will be based on the performance of the candidates in the Interview and those who secure minimum 60% marks in the interview will be eligible for consideration for empanelment in the selection panel, in the order of merit. On the basis of previous examination, scoring around fifty percentage of questions will not be a big deal for the one who have studied his/ her B.Tech fairly. But the deciding factor of this examination is scoring the remaining 25-30 percentage of  questions that greatly comes from areas like Microprocessor, Electromagnetic theory, Communication, Digital Electronics etc. Most of the students are afraid of this examination because of the need for scoring 75 to 80 questions( each question carries 3 marks). Having an excellent knowledge on all the subjects will help the candidates to cross the finish line.

Sigma group have decided to start the classes for ISRO Scientist/ Engineer on March 2017 , such that can be completed within the announced date of examination. Those who are dedicated and confident about his studies and whose who can foresee himself as a scientist in ISRO can easily achieve this job.

How to apply:

click here to apply

ISRO 2018 Coaching Regular Batch

ISRO 2018 Coaching Postal Batch


• Starting Date – 31-Jan-2018

• Last Date – 20-Feb-2018

• Last Date Payment – 21-Feb-2018

• Admit card Download – March-2018

• Exam Date – 22-April-2018


• General / OBC- Rs.100/-

• SC/ST – No Fee

• Female– No Fee

The fee can be paid through credit card/ debit card or net banking or through Challan


All India


(As on 20-February-2018)

Maximum- 35 Years

For Age Relaxation Check Advertisement.

Number of posts- 106 post

Post Name – Scientist /Engineer SC

Discipline wise Vacancy-

Electronics – 32 posts  (Post Code- BE 001)

Mechanical – 45 posts (Post Code –BE 002)

Computer Science – 29 posts (Post Code- BE 003)

Pay Scale – Rs.56100/-  per month

Educational Qualification- BE/B.Tech. with 65 % marks in relevant discipline  from a recognized university

How to Apply – Interested candidates may apply online through the official website of ISRO from 31-Jan-2018 to 20-Feb-2018

(Click on the Apply Online Link at the Important Link section in order to apply)

Mode of Selection- Written Test

Exam Centre – Ahmedabad, Hyderabad, Bengaluru, Kolkata, Bhopal, Lucknow, Chandigarh, Mumbai, New Delhi , Guwahati Thiruvananthapuram


Previous Year Question papers

Previous year question Electronics-2006                Previous year question Electronics-2007

Previous year question Electronics-2008               Previous year question Electronics-2009

Previous year question Electronics-2010                Previous year question -2011

Previous year question Electronics-2012                 Previous year question Electronics-2013

Previous year question -2014:                                       Previous year question -2015


1) Physical Electronics, Electron Devices and ICs:

Electrons and holes in semi-conductors, Carner Statistics, Mechanism of current flow in a semi-conductor, Hall effect; Junction theory; Different types of diodes and their characteristics; Bipolar Junction transistor; Field effect transistors; Power switching devices like SCRs, GTOs, power MOSFETs; Basics of ICs-bipolar, MOS and CMOS types; basic and Opto Electronics.

(2) Signals and Systems:

Classification of signals and systems; System modeling in terms of differential and difference equations; State variable representation; Fourier series; Fourier transforms and their application to system analysis; Laplace transforms and their application to system analysis; Convolution and superposition integrals and their applications; Z-transforms and their applications to the analysis and characterization of discrete time systems; Random signals and probability; Correlation functions; Spectral density; Response of linear system to random inputs.

(3) Network Theory:

Network analysis techniques; Network theorems, transient response, steady state sinusoidal response; Network graphs and their applications in network analysis; Tellegen’s theorem. Two port networks; Z, Y, h and transmission parameters. Combination of two ports, analysis of common two ports. Network functions: parts of network functions, obtaining a network function from a given part. Transmission criteria: delay and rise time, Elmore’s and other definitions effect of cascading. Elements of network synthesis.

(4) Electromagnetic Theory:

Analysis of electrostatic and magneto-static fields; Laplace’s and Poisson’s equations; Boundary value problems and their solutions; Maxwell’s equations; application to wave propagation in bounded and unbounded media; Transmission lines: basic theory, standing waves, matching applications, microstrip lines; Basics of wave guides and resonators; Elements of antenna theory.

(5) Analog Electronic Circuits:

Transistor biasing and stabilization. Small signal analysis. Power amplifiers. Frequency. response. Wide banding techniques. Feedback amplifiers. Tuned amplifiers. Oscillators, Rectifiers and power supplies. Op Amp, PLL, other linear integrated circuits and applications. Pulse shaping circuits and waveform generators.

(6) Digital Electronic Circuits:

Transistor as a switching element; Boolean algebra, simplification of Boolean function Karnaugh map and applications; IC Logic gates and their characteristics; IC logic families: DTL, TTL, ECL, NMOS, PMOS and CMOS gates and their comparison; Combinational logic circuits; Half adder, Full adder; Digital comparator; Multiplexer De-multiplexer; ROM and their applications. Flip-flops. R-S, J-K, D and T flip-tops; Different types of counters and registers. Waveform generators. A/D and D/A converters. Semi-conductor memories.

(7) Control Systems:

Transient and steady state response of control systems; Effect of feedback on stability and sensitivity; Root locus techniques; Frequency response analysis. Concepts of gain and phase margins; Constant-M and Constant-N Nichol’s Chart; Approximation of transient response from Constant-N Nichol’s Chart; Approximation of transient response from closed loop frequency response; Design of Control Systems; Compensators; Industrial controllers.


Basic information theory; Modulation and detection in analogue and digital systems; Sampling and data reconstructions; Quantization and coding; Time division and frequency division multiplexing; Equalization; Optical Communication: in free space and fiber optic; Propagation of signals at HF, VHF, UHF and microwave frequency;SatelliteCommunication.

(9) Microwave Engineering:

Microwave Tubes and solid state devices, Microwave generation and amplifiers, Wave guides and other Microwave Components and Circuits, Microstrip circuits, Microwave Antennas, Microwave Measurements, Masers, Lasers; Micro-wave propagation. Microwave Communication Systems-terrestrial and satellite based.

(10) Computer Engineering:

Number Systems. Data representation; Programming; Elements of a high level programming language PASCAL/C; Use of basic data structures; Fundamentals of computer architecture; Processor design; Control unit design; Memory organization, I/o System Organization. Microprocessors: Architecture and instruction set of Microprocessor’s 8085 and 8086, Assembly language Programming. Microprocessor Based system design: typical examples. Personal computers and their typical uses.

ISRO 2018 Coaching Regular Batch

ISRO 2018 Coaching Postal Batch