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Preparing for the ISRO Scientist exam across all engineering branches needs an effective study plan.This blog gives you a 3-month study plan that covers all important topics for Mechanical, ECE, CSE, Civil, Electrical, and Aerospace branches. Use this plan to stay focused and complete the syllabus on time.
ISRO Scientist Recruitment 2025 Highlights
| Particulars | Details |
|---|---|
| Recruited for | Indian Space Research Organisation (ISRO) |
| Post Name | Scientist/Engineer |
| Advt. No. | ISRO:ICRB:01:(EMC):2025 & ISRO:ICRB:02(EMC):2025 |
| Total Vacancies | 351 |
| Location | URSC & ISRO Telemetry Tracking and Command Network, Bengaluru |
| Application Start Date | May 10, 2025 (Advt. No. 01) May 27, 2025 (Advt. No. 02) |
| Last Date to Apply | May 30, 2025 (Advt. No. 01) June 16, 2025 (Advt. No. 02) |
| Exam Dates | Not Announced |
| Exam Level | National |
| Exam Frequency | As per requirements |
ISRO Scientist 2025 Previous Question Paper PDF
1: Between the period of 1858-1947, how many Viceroys ruled over India?
| Question 1 | Question 2 |
|---|---|
| Electronics | |
| Mechanical | |
| Computer Science |
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Join NowISRO Scientist Study Plan 2025
the detailed 3-month study plan to organize your preparation for the ISRO Scientist exam. It covers all important topics for each engineering branch, helping you manage your time and study efficiently. Follow the plan to stay on track!
ISRO Scientist 2025: 3-Month Study Plan – Mechanical Engineering
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 1 | Engineering Mechanics – Part 1 | Statics, Friction | Study theory, solve concept-based problems |
| Week 2 | Engineering Mechanics – Part 2 | Dynamics, Moment of Inertia, Work & Energy, Rigid Body Dynamics | Practice numericals, revise concepts |
| Week 3 | Strength of Materials – Part 1 | Stress & Strain, Bending Stress | Focus on formulas, solve numerical problems |
| Week 4 | Strength of Materials – Part 2 | Shear Force, Bending Moment, Torsion, Cylinders | Draw diagrams, practice derivations |
2nd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 5 | Thermodynamics – Part 1 | Laws of Thermodynamics, Thermodynamic Cycles | Learn laws, solve GATE-level questions |
| Week 6 | Thermodynamics – Part 2 | Air Standard Cycles, Heat Engines, Refrigeration & AC | Practice cycle problems, diagrams |
| Week 7 | Fluid Mechanics – Part 1 | Fluid Statics, Fluid Dynamics | Solve numericals, revise formulas |
| Week 8 | Fluid Mechanics – Part 2 | Bernoulli’s Eqn, Pipe Flow, Flow Measurement, Laminar & Turbulent Flow | Take chapter tests, revise |
3rd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 9 | Machine Design – Part 1 | Bearings, Gears | Focus on design approach, numerical practice |
| Week 10 | Machine Design – Part 2 | Power Transmission, Shaft, Springs, Fasteners | Solve design problems, revise data tables |
| Week 11 | Manufacturing – Part 1 | Casting, Welding, Forging | Study principles, advantages, limitations |
| Week 12 | Manufacturing – Part 2 + Revision | Machining, CNC, Additive Mfg, Material Handling + Full Revision | Mock tests, full syllabus revisi |
PREPARE FOR CIVIL TECHNICAL EXAMS NOW!
ISRO Scientist 2025: 3-Month Study Plan –Electronics and Communication Engineering
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 1 | Circuit Theory – Part 1 | Ohm’s Law, Kirchhoff’s Laws, Network Theorems | Understand concepts, solve basics |
| Week 2 | Circuit Theory – Part 2 | AC/DC Circuits, Thevenin’s and Norton’s Theorem, Transients, Resonance | Practice numericals and problems |
| Week 3 | Signals and Systems – Part 1 | Fourier Series, Laplace Transform | Study theory, solve example problems |
| Week 4 | Signals and Systems – Part 2 | Z-Transform, Convolution, Filters, Digital Signal Processing | Practice problem sets, revise |
2nd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 5 | Electronic Devices | Diodes, Transistors, FETs, Operational Amplifiers, Oscillators, Regulators | Learn device characteristics, solve MCQs |
| Week 6 | Digital Electronics – Part 1 | Number Systems, Logic Gates, Boolean Algebra | Practice logic problems, truth tables |
| Week 7 | Digital Electronics – Part 2 | Flip-Flops, Counters, Registers, ADC/DAC | Solve circuit design questions |
| Week 8 | Control Systems – Part 1 | Open and Closed Loop Systems, Stability Analysis, Root Locus | Learn system types, analyze stability |
3rd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 9 | Control Systems – Part 2 | Bode Plots, Nyquist Plots, PID Controllers | Practice plotting and analysis |
| Week 10 | Communication Systems – Part 1 | Amplitude Modulation (AM), Frequency Modulation (FM), Phase Modulation (PM) | Understand modulation techniques |
| Week 11 | Communication Systems – Part 2 | Pulse Code Modulation (PCM), Error Control Coding | Study coding methods, solve examples |
| Week 12 | Revision and Mock Tests | Revise all topics, solve previous year papers, full mock tests | Analyze weak points, focus on revision |
ISRO Scientist 2025: 3-Month Study Plan –Computer Science Engineering
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 1 | Data Structures – Part 1 | Arrays, Linked Lists, Stacks, Queues | Understand basics, practice coding |
| Week 2 | Data Structures – Part 2 | Trees, Graphs, Sorting, Searching Algorithms, Hashing | Solve problems, implement algorithms |
| Week 3 | Operating Systems – Part 1 | Process Management, Memory Management, File Systems | Study concepts, diagrams, practice |
| Week 4 | Operating Systems – Part 2 | Deadlocks, Virtual Memory, Scheduling Algorithms, I/O Systems | Revise key algorithms, solve MCQs |
2nd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 5 | Database Management Systems | Relational Model, SQL, Normalization, ER Model, Transactions | Practice SQL queries, understand concepts |
| Week 6 | Database Management Systems | Indexing, Concurrency Control | Solve related problems, case studies |
| Week 7 | Computer Networks – Part 1 | OSI Model, TCP/IP, Routing Algorithms | Study protocols, network layers |
| Week 8 | Computer Networks – Part 2 | IPv4/IPv6, Network Topologies, Protocols, Error Detection and Correction | Solve network problems, revise theory |
3rd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 9 | Software Engineering – Part 1 | SDLC, Software Design Patterns | Learn methodologies, design patterns |
| Week 10 | Software Engineering – Part 2 | Testing, Maintenance, Agile Methodology | Study testing types, agile basics |
| Week 11 | Discrete Mathematics – Part 1 | Set Theory, Logic, Relations, Functions | Solve problems, revise theory |
| Week 12 | Discrete Mathematics – Part 2 | Graph Theory, Combinatorics, Automata Theory | Practice problems, quick revision |
ISRO Scientist 2025: 3-Month Study Plan – Civil Engineering
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 1 | Structural Engineering – Part 1 | Analysis of Structures, Beams and Frames, Trusses | Understand concepts, solve problems |
| Week 2 | Structural Engineering – Part 2 | Columns, Indeterminate Structures, Concrete and Steel Design | Revise design codes, practice questions |
| Week 3 | Surveying – Part 1 | Chain Surveying, Compass Surveying, Theodolite Surveying | Study techniques, diagrams |
| Week 4 | Surveying – Part 2 | Levelling, Total Station, GPS | Practice instrument usage, calculations |
2nd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 5 | Geotechnical Engineering | Soil Mechanics, Foundation Engineering | Understand soil properties, foundation design |
| Week 6 | Geotechnical Engineering | Bearing Capacity, Settlement Analysis | Practice related calculations |
| Week 7 | Fluid Mechanics – Part 1 | Fluid Properties, Fluid Statics, Fluid Dynamics | Revise fluid properties, laws |
| Week 8 | Fluid Mechanics – Part 2 | Bernoulli’s Equation, Open Channel Flow, Pipe Flow | Solve numerical problems |
3rd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 9 | Building Materials | Cement, Concrete, Aggregates, Bricks | Learn material properties, testing methods |
| Week 10 | Building Materials | Timber, Steel, Testing of Materials | Revise standards, practice questions |
| Week 11 | Environmental Engineering | Water and Wastewater Treatment, Air and Noise Pollution | Understand treatment processes, pollution control |
| Week 12 | Transportation Engineering | Solid Waste Management, Highway Planning, Pavement Design, Traffic Engineering, Transportation Systems | Study design principles, traffic management |
ISRO Scientist 2025: 3-Month Study Plan – Electrical Engineering
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 1 | Circuit Theory – Part 1 | AC/DC Circuits, Kirchhoff’s Laws, Network Theorems | Understand basics, solve problems |
| Week 2 | Circuit Theory – Part 2 | Transients, Thevenin’s and Norton’s Theorem, Power Factor | Practice calculations, formulas |
| Week 3 | Control Systems – Part 1 | Transfer Functions, Stability, Root Locus | Revise theory, sketch plots |
| Week 4 | Control Systems – Part 2 | Bode Plots, State-Space Analysis, Feedback Systems | Solve example problems |
2nd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 5 | Electrical Machines – Part 1 | Transformers, DC Machines, Induction Motors | Study working principles, applications |
| Week 6 | Electrical Machines – Part 2 | Synchronous Motors, Motor Control, Power Factor Correction | Practice numerical problems |
| Week 7 | Power Systems – Part 1 | Power Generation, Transmission, Distribution | Understand system layout, key concepts |
| Week 8 | Power Systems – Part 2 | Protection, Fault Analysis, Load Flow, Power Factor Correction | Review protection devices, calculations |
3rd Month
| Week | Topics to Cover | Subtopics | Tasks |
|---|---|---|---|
| Week 9 | Power Electronics | Rectifiers, Inverters, Converters, Power Semiconductor Devices | Study circuit operation, applications |
| Week 10 | Power Electronics | DC-DC Converters, AC-DC Converters | Practice problem-solving |
| Week 11 | Signal Processing | Sampling Theorem, Fourier Transform, Filters | Revise theory, solve examples |
| Week 12 | Signal Processing & EM Fields | Time and Frequency Domain Analysis, Maxwell’s Equations, Wave Propagation | Understand concepts, sketch waves |
ISRO Scientist 2025: 3-Month Study Plan – Aerospace Engineering
| Week | Topics to Cover | Subtopics | Focus Areas |
|---|---|---|---|
| Week 1 | Aerodynamics – Part 1 | Airfoil Theory, Lift and Drag, Boundary Layer | Understand fundamentals, diagrams |
| Week 2 | Aerodynamics – Part 2 | Flow over Wings, Compressible Flow, Shock Waves | Study advanced concepts, problem-solving |
| Week 3 | Flight Mechanics – Part 1 | Stability and Control, Aircraft Performance | Revise control basics, performance factors |
| Week 4 | Flight Mechanics – Part 2 | Flight Path, Control Surfaces, Manoeuvres | Practice calculations, case studies |
2nd Month
| Week | Topics to Cover | Subtopics | Focus Areas |
|---|---|---|---|
| Week 5 | Aircraft Structures – Part 1 | Stress Analysis, Materials, Fatigue, and Fracture | Study material properties, failure modes |
| Week 6 | Aircraft Structures – Part 2 | Aircraft Design, Composite Materials | Focus on design principles, composites |
| Week 7 | Propulsion – Part 1 | Jet Engines, Rocket Propulsion, Thrust | Understand engine types, propulsion basics |
| Week 8 | Propulsion – Part 2 | Specific Impulse, Turbomachinery, Combustion | Revise thermodynamics, fuel combustion |
3rd Month
| Week | Topics to Cover | Subtopics | Focus Areas |
|---|---|---|---|
| Week 9 | Control Systems | Flight Control, Stability, Actuators, Sensors | Learn control theory, system components |
| Week 10 | Flight Control Systems Design | Flight Control System Design | Focus on design and applications |
| Week 11 | Avionics | Communication Systems, Radar, Navigation | Study navigation aids, radar principles |
| Week 12 | Avionics & Spacecraft Systems | Instrumentation, Satellite Communications, Orbital Mechanics | Focus on satellite and space tech basics |
ISRO Scientist Preparation Tips 2025
- Aim for 4–6 hours of focused study.
- Use for full-length mock tests and revision.
- Focus only on high-weight topics and weak areas.
- Use ISRO books, previous year question papers, and topic-wise mock tests.
- Review formulas and important concepts regularly.
- Focus on problem-solving and understanding application-based questions.
