ISRO Scientist Electrical study guide
ISRO Scientist Electrical · Work through your exam, one topic at a time.
The ISRO Scientist/Engineer (Electrical) recruitment exam is the written selection gateway to engineering posts at the Indian Space Research Organisation, conducted by its central recruitment board. It suits electrical engineering graduates, including final-year students, who want a research-and-development career in space systems rather than conventional utility or manufacturing work. The ISRO Scientist Electrical study guide has 11 sections and about 3,174 words.
01Electrical Circuits and Networks
Electrical Circuits and Networks tests whether you can reduce a linear circuit to a simple equivalent, solve AC steady state with phasors, and handle first-order transients. Questions often combine source transformation with a theorem rather than asking for a single definition.
331 words, about 2 min02Electrical Machines (Transformers, DC Machines, Induction and Synchronous Machines)
Electrical Machines covers transformer operation, DC machine equations, induction motor slip, and synchronous machine excitation. The exam favors equivalent circuits and speed-torque relationships over descriptive history.
305 words, about 2 min03Power Systems (Generation, Transmission, Distribution, Protection and Switchgear)
Power Systems tests generation economics, transmission parameters, per-unit calculations, fault levels, protection, and switchgear. Numerical questions usually reduce to per-unit or symmetrical-component reasoning.
291 words, about 1 min04Control Systems
Control Systems tests transfer functions, stability, time response, and frequency response. Expect Routh-Hurwitz, steady-state error, and Bode or root-locus interpretation rather than block-diagram drawing alone.
298 words, about 1 min05Power Electronics and Drives
Power Electronics and Drives tests switching devices, converter waveforms, and motor control. Many questions ask for average voltage, ripple, or conduction mode rather than device physics.
300 words, about 2 min06Analog and Digital Electronics
Analog and Digital Electronics tests op-amp configurations, diode, BJT and MOSFET operating regions, Boolean minimization, and sequential logic timing. Expect both numerical gain and truth-table questions.
315 words, about 2 min07Signals, Systems and Measurements
Signals, Systems and Measurements tests LTI system properties, convolution, Fourier, Laplace and Z transforms, sampling, and instrument behavior. Measurement questions often hinge on loading and bridge balance.
283 words, about 1 min08Electromagnetic Fields and High Voltage Engineering
Electromagnetic Fields and High Voltage Engineering tests Maxwell's equations, field boundary conditions, capacitance and inductance, and insulation breakdown. HV questions emphasize field enhancement and test waveforms.
281 words, about 1 min09Engineering Mathematics (Linear Algebra, Calculus, Differential Equations, Transforms, Numerical Methods)
Engineering Mathematics tests matrix methods, calculus, differential equations, transforms, and numerical iteration. The exam usually embeds the mathematics in an engineering context.
255 words, about 1 min10General Aptitude and Reasoning (Quantitative, Logical, Verbal)
General Aptitude and Reasoning tests quantitative speed, logical deduction, and verbal accuracy. The quantitative part is arithmetic and algebra; the logical part includes series, syllogisms, and coding; the verbal part includes grammar and comprehension.
261 words, about 1 min11Computing and Programming Fundamentals (C, Data Structures, Digital Logic Basics)
Computing and Programming Fundamentals tests C syntax, basic data structures, complexity, and digital logic basics. Questions are short-code and truth-table oriented.
254 words, about 1 min