The examination would comprise 200 questions carrying 200 marks for two hours duration. The question paper would have two parts, Part – I & Part – II.
Papers Subject No.
of questions
& Timings

based Examination mode

(i) General
Intelligence & Reasoning

(ii) Quantitative Aptitude


(iii) English
language & Comprehension

(iv) General Awareness












Minutes (Total)


based Examination mode

Computer Science and Information Technology,

& Telecommunication Engineering.

Candidates are not permitted to bring or use Mobile Phone,
Calculators or any  other electronic/ electrical device for answering any paper.
Candidates must not, therefore, bring Mobile Phone, Calculators or any other electronic/electrical device inside the Examination premises.
Possession of these items, whether in use or not, will be considered as “use of unfair means” in the Examination and appropriate action will be taken by the Commission against such candidates, as per extant policy of the Commission.
There will be negative marking of 0.25 marks for each wrong answer in Part-I& II. Candidates are, therefore, advised to keep this in mind while answering the questions.
Discrepancies in question paper should be brought to the notice of the Commission through online challenge system when representations are invited by the commission after the examination. Representations submitted thereafter and through any other means will not be entertained.
The details of the syllabus are given below.
(i) General Intelligence &Reasoning: The Syllabus for General Intelligence would include questions of both verbal and non-verbal type. The test may include questions on analogies, similarities, differences, space visualization,problem solving, analysis, judgement, making, visual memory,discrimination, observation, relationship concepts, arithmetical reasoning, verbal and figure classification, arithmetical number series etc. The test will also include questions designed to test the candidate‟s abilities to deal with abstract ideas and symbols and their relationships, arithmetical computations and other analytical functions.
(ii) Quantitative Aptitude:The questions will be designed to test the ability of appropriate use of numbers and number sense of the candidate. The scope of the test will be computation of whole numbers, decimals, fractions and relationships between numbers,
Percentage, Ratio & Proportion, Square roots, Averages, interest,Profit
and Loss, Discount, Partnership Business, Mixture and Alligation, Time and Distance, Time & Work, Basic algebraic identities of School Algebra & Elementary Surds, Graphs of Linear Equations, Triangle and its various Kinds of centers, Congruence and similarity of triangles, Circle and its chords,tangents, angles subtended by chords of a circle, common tangents to two or more circles, Triangle, Quadrilaterals, Regular Polygons, Circle, Right Prism,Right Circular Cone, Right Circular Cylinder, Sphere, Hemispheres, Rectangular
Parallelepiped, Regular Right Pyramid with triangular or square base,
Trigonometric ratio, Degree and Radian Measures, Standard Identities,Complementary angle, Heights and Distances, Histogram, Frequency polygon, Bar diagram & Pie chart.
(iii) English Language & Comprehension: English grammar, Vocabulary, Spellings,Synonyms and Antonyms, Comprehension, Correct and incorrect usages, etc.
(iv) General Awareness:
General, physical, geographical, topographical, economic and climatic features of India. Current events. Matters of everyday observation and experience on scientific aspects and reasoning. Basic topics of mathematics, Chemistry and Physics. History of India, its cultural heritage, freedom movement, salient feature of the Constitution of India. Economic and social aspect of the country and its people.
Part-II a)   Physics
Mechanics:Units and dimensions, SI Units, Newton‟s Laws of Motion, conservation of linear and angular momentum, projectiles, rotational motion, moment of inertia,rolling motion, Newton‟s Law of gravitation, Planetary motion, Kepler‟s Laws of Planetary motion, artificial satellites, Fluid motion, Bernoulli‟s theorem,Surface tension, Viscosity, Elastic Constants, bending of beams, torsion of cylindrical bodies, elementary ideas of special theory of relativity.
Thermal Physics, Radiation & Sound: Thermometry, Zeroth, first and second laws of thermodynamics, reversible and irreversible processes, Internal energy, Heat engines, Maxwell‟s relation, ideal and real gases, equations of state, Heat Capacities, Adiabatic and Isothermal processes, Clausius-Clapeyron relation,Thermal Conductivity, Entropy, Enthalpy, Dalton‟s law of partial pressure,
Vapour pressure, Kinetic theory of gases, Brownian motion, Maxwell‟s velocity distribution, Equipartition of energy, mean free path Vander walls‟ equation of State, Liquefaction of gases. Blackbody radiation, Kirchhoff‟s law, Stephen‟s law, Planck‟s law. Conduction in solids.
Wave and Oscillations: Simple harmonic motion, wave motion, superposition principle,Damped oscillations; forced oscillations and resonance; simple oscillatory systems; vibrations of rods, strings and air columns. Doppler effect; Ultrasonic; Sabine‟s law of reverberation; Recording and reproduction of sound.
Optics:Nature and propagation of light; Reflection & Refraction. Interference;diffraction; polarization of light; simple interferometers. Determination of wavelength of spectral lines, Electromagnetic spectrum. Rayleigh scattering,Raman effect, Lenses and mirrors, combination of coaxial thin lenses, spherical and chromatic aberrations, and their corrections, Microscope, Telescope,Eyepieces and Photometry.
Electricityand magnetism: Electric charges, fields and potentials, Gauss‟s theorem,Electrometers, Dielectrics, Magnetic properties of matter and their measurement, Elementary theory of dia, para and ferro-magnetism, Hysteresis,Electric current and their properties, Ohm‟s law, Galvanometers, Whetstone‟s bridge and applications, Potentiometers, Faraday‟s law of E.M. induction, self and mutual inductance and their applications, alternating currents, impedance
and resonance, LCR circuit, Dynamos, motors, transformers, Peltier-Seebeck and Thomson effects and applications, electrolysis, Hall effect, Hertz experiment and electro-magnetic waves, Particle accelerators and cyclotron.
Atomic structure: Electron, measurement of „e‟ and „e/m‟, measurement of Planck Constant,Rutherford-Bohr Atom, X-rays, Bragg‟s law, Moseley‟s law, Radioactivity,Alpha-Beta-Gamma emission, Elementary ideas of nuclear structures, Fission,Fusion and Reactors, Louis de Broglie waves and Electron Microscope.
Electronics;Thermo-ionic emission, diodes and triodes, p-n diodes and transistors, simple rectifier, amplifier and oscillator circuits.
b) Computer Science and Information Technology
Computer:History of Computer and their classification, Basic Organization, Memory – RAM,ROM, EPROM, etc, Magnetic-Floppy, Hard disks, CDROM, WORM etc, Concept of Virtual Memory and Cache Memory, Number systems, binary octal, Hexadecimal,Binary Addition, Subtraction and Multiplication, Flotation, point representation and arithmetic, Arithmetic through stacks.Operating
systems: assemblers, elements of Assembly language programming- Overview of the Assembly process, assembler for the IBM PC, Process synchronization,
Memory Management – address Binding – dynamic Loading and linking – overlays – logical and Physical address space – Contiguous Allocation – internal& External Fragmentation. Non-Contiguous Allocation: Paging and Segmentation Schemes –Implementation – Hardware Protection – Protection – sharing – Fragmentation.
Virtual Memory: Demand Paging – Page Replacement – Page Replacement algorithms –Thrashing.
File System: File Concepts – Assess Methods – Directory Structures – Protection Consistency Semantics – File system Structures –Allocation Methods – Free Space Management.
I/O System: Overview – I/O hardware – Application I/O Interface – Kernel I/O subsystem, Performance, Secondary Storage Structures, Protection, Goals, Domain– Access matrix.
Assemblers:Elements of assembly language programming – Overview of the Assembly process –Design of a low-pass Assembler – a single pass Assembler for the IBM PC. The security Problem – Authentication – Threats – Threat Monitoring –Encryption.
Fundamentals of programming: Unix Programming, Programming in FORTRAN, C, Object Oriented Programming in C++, programming in Java, Basics of compilers.
Database Management Systems: Advantages and components of a Database Management Systems,Data Types, Data Dictionary, Query Basics, Forms and Reports, Graphical objects, Error Handing, Distributing Application, Data Storage Methods, Data Clustering and Partitioning, Database Administration, Backup and Recovery,Security and Privacy, Distributed Databases, Client/Server Databases, Object
Oriented Databases, Integrated Applications, SQL, RDBMS.
Internet Technology: Basics, topologies, layers, switching in the networks,bridges, routers and gateways, types of networks, WWW.
Client/Server Applications, Internet Standards and specifications, ISP, Broad Band Technologies, Protocols, web-servers, browsers, and security, fire walls,date security, HTML, dHTML, XML, Web designing.
Fundamentals of Geographical Information System (GIS): GIS Data and Spatial Models,Topology ad Spatial Operations, Projections, Scale and Coordinate Systems,Mapping, GIS Analysis, Cartography. Basics of GIS application development.
c) Electronics & Telecommunication
i) Electronics:
Conductors,Semi-conductors, Insulators, Magnetic, Passive components, characteristics of Resistors, Capacitors and inductors.PN Junction diode, forward and reverse bias characteristics and equivalent circuits of diode, Zener diode and applications,clipping,clamping and rectifier circuits using diodes.
BipolarJunction Transistors (BJT) Field Effect Transistor (FET) and MOSFET; Biasing and stability, Emitter follower and its applications – Negatives feed back-Transistor as a switch, Multistage Amplifiers, Feedback, Oscillators,Multivibrators, Voltage regulation, Power amplifiers.
Introduction to Network Theorems: Kirchoff‟s laws, superposition, Thevenin‟s Norton‟s and Maximum power theorems.
Voltage and Current relationship in the resistance, inductance and capacitance. Concept of reactance, susceptance, conductance, impedance and admittance in series and parallel RL, RC and RLC circuits – Three phase supply-star and delta connection diagrams – Relation between line and phase & voltages and currents, series
and parallel resonance circuits – condition of resonance, resonant frequency, Q factor and bandwidth.
Digital electronics: – Logic gates, Demorgan‟s theorem, Boolean algebra, frequency counters, flip-flops, shift resistors, Basic concepts of Digital to Analog and Analog to Digital Converters, Timing circuits, Digital logic circuits, systems & codes Combinational logic design.
ii) Telecommunication:
Basic antenna principle directive gain, directivity, radiation pattern, broad-side and end-fire array, Yagi antenna, Parabolic antenna, Ground wave propagation,space waves, ionosphere propagation and electromagnetic frequency spectrum, Modulation, types of modulation, Amplitude Modulation (AM), Modulation index,
Power relation in AM, Generation and Demodulation of AM.
Single Side Band (SSB): Power requirement in comparison with AM, Advantages of SSB over AM. Concept of Balanced Modulator, Generation of SSB, Pilot Carrier System. Independent Side System, Vestigial Sideband Transmission.
Frequency Modulation (FM): Definition of FM, Bandwidth, Noise triangle, Pre- emphasis and De-emphasis.
Pulse Modulation (PM): Definition of PM. Difference between AM and FM. Radio receivers. Sampling Theorem, PAM, PTM, PWM, PPM, pulse code modulation,Quantization noise, commanding, PCM system, differential PCM, Delta modulation.
Introduction of digital Communication: PSK, ASK, FSK, introduction to fiber optics system,Propagation of light in optical fiber and ray model.
Propagation of signals at HF, VHF, UHF and microwave frequency and satellite communications.


The Commission will prepare the category-wise Merit List and hand it over to India Meteorological Department, which would declare the final result.

SC, ST, OBC and PH candidates, who are selected on their own merit without relaxed standards, along with candidates belonging to other communities, will not be adjusted against the reserved share of vacancies. Such SC, ST, OBC and PH candidates will be accommodated against the general/unreserved vacancies in
the post as per their position in the overall Merit List or vacancies earmarked for their category, whichever is advantageous to them. The reserved vacancies will be filled up separately from amongst the eligible SCs, STs, OBCs and PH candidates.

A person with physical disability (OH) who qualifies the Commission?s examination under General standards can be appointed against an unreserved vacancy provided the post is identified suitable for person with disability of relevant category.

Reserved category candidate who qualifies on the basis of relaxed standards viz. age limit, experience or qualifications, permitted number of chances in written examination, extended zone of consideration, etc. will be counted against reserved vacancies and not against general vacancies subject to fitness of such candidate for selection. Such candidates may also be recommended at the relaxed standards to  fill up the number of vacancies reserved for them, irrespective of their rank in the order of merit. In so far as cases of Ex-Serviceman are concerned, deduction from the age of Ex-Servicemen is permissible and such exemption will not be termed as relaxed standards in regard to age.

Success in the examination confers no right of appointment unless Government is satisfied after such enquiry as may be considered necessary that the candidate is suitable in all respects for  appointment to the service/post.

Candidates applying for the examination should ensure that they fulfill all the  eligibility conditions for admission to the examination.  Their admission at all stages  of the examination will be purely provisional,subject to their satisfying the prescribed eligibility conditions. If, on verification, at any time before or after the written examination, it is found that they do not fulfill any of the eligibility conditions, their candidature for the examination will be cancelled by the Commission.


In cases where more than one candidate secures the equal aggregate marks, tie will be resolved by applying the following methods one after another:-

Total marks in the Computer based examination (Part-I & Part-II)

Marks in Part-II

Marks in Part-I

Date of birth, with older candidates placed higher.

Alphabetical order in which first names of the candidates appear on line.


ISRO Scientist/Engineer (SC) Electrical 2013-2017 Question Paper And Answer Key
SSC Recruitment Of Scientific Assistant 2017 Total Post 1102


  1. jessay
  2. Ravi Ranjan
    • Harikesh Yadav
      • Ravi Ranjan
        • Harikesh Yadav
  3. Sasikumar
    • Harikesh Yadav
    • Harikesh Yadav

Leave a Reply