ISRO Scientist Mechanical study guide
ISRO Scientist Mechanical · Work through your exam, one topic at a time.
The ISRO Scientist/Engineer 'SC' (Mechanical) recruitment is run centrally by the ISRO Centralised Recruitment Board (ICRB) under the Department of Space, advertised in cycles such as ISRO:ICRB:02(EMC):2025 dated 27.05.2025, with the Mechanical post code BE002. It is aimed at mechanical engineering graduates who want a scientist/engineer career in India's space programme, and the pipeline is a Computer Based Test followed by an interview for screened-in candidates, ending in a published selection panel. The technical paper is a single mechanical-engineering discipline paper, so breadth across thermodynamics, fluid mechanics, strength of materials, theory of machines, manufacturing, design and materials matters more than narrow specialisation. Because ISRO publishes old question papers through a consolidated link on its Careers page, and separately publishes CBT notices, admit-card links, answer keys and objection-management portals, the most reliable preparation loop is: work the official old papers under timed conditions, log every topic that produced a wrong answer, revise that topic from a standard textbook, then re-attempt. Treat dates, CBT schedules and interview phases as moving targets and verify them on the official ISRO Careers page rather than on coaching sites. This page is independent study material and is not affiliated with ISRO. Topics on this exam: Mechanical Engineering (technical discipline of the post). The ISRO Scientist Mechanical study guide has 1 section and about 384 words.
01Mechanical Engineering for ISRO Scientist/Engineer 'SC'
The ISRO Scientist/Engineer 'SC' (Mechanical) paper checks core mechanical engineering - thermodynamics, fluid mechanics, strength of materials, theory of machines, heat transfer, manufacturing and machine design - applied to launch-vehicle and satellite hardware: propulsion cycles, cryogenic turbopumps, lightweight stiffened structures, stage separations and vibration control. Expect numericals with space-relevant numbers (high Mach, cryogenic temperatures, thin-walled shells). Steady-flow energy per unit mass: q − w = Δh + ΔKE + ΔPE. In a nozzle q = w = 0, so exit velocity follows from the enthalpy drop.
384 words, about 2 minMore study resources for ISRO Scientist Mechanical
- Practice questionsA closed system undergoes a reversible adiabatic process.
- FlashcardsCarnot efficiency. Maximum possible thermal efficiency between two reservoirs at absolute temperatures T H and T L: η = 1 − T L/T H.
- Cheat sheetThermal efficiency of a Carnot engine: η = 1 − T L/T H with absolute temperatures; no real engine between the same reservoirs can exceed this value.
- Key termsSecond Law of Thermodynamics. States that entropy of an isolated system never decreases and that no cyclic device can convert all heat input into work, setting a directional limit on energy conversion in engines and refrigerators.
- Study planDerive and re-derive from memory the full set of plane-stress and plane-strain transformation equations, including principal stresses, maximum shear, and Mohr's circle construction, on blank paper without notes.
- Common mistakesCandidates often reuse GATE preparation material because the syllabus overlaps heavily, and assume the paper's weighting mirrors GATE.
- Exam-day guideISRO recruitment is run through the ISRO Centralised Recruitment Board (ICRB) and the exact ID set, photograph/signature specifications, and admit-card download window can change between cycles.