Video summary

ISRO Scientist Recruitment 2026 || Selection Through CBTđŸ”„|| ECE || PrepFusion

Main summary

Key takeaways

Educational

Main ideas / lessons

  • ISRO (Indian Space Research Organisation) recruits engineers for Scientist-level positions through a yearly process that includes:
    • a Written Test (CBT-style)
    • an Interview
  • The video is aimed specifically at EC/ECE (electronics/communication and related) candidates.
  • The speaker emphasizes that success is largely about:
    • meeting the minimum eligibility/qualifying thresholds
    • then relying on cut-offs to determine who gets called/selected.
  • Recommended preparation strategy:
    • focus primarily on the GATE (for EC) syllabus
    • then solve previous-year ISRO papers to learn frequently repeated patterns and question types.
  • Interview preparation is described as less urgent than clearing the written test:
    • clear the written test first
    • then prepare for the interview.

Detailed list of process / instructions and key criteria

1) Vacancies (as stated)

  • Total vacancies mentioned: 99
  • Branches allowed (examples listed):
    • Applied Electronics
    • Communication/Electronics-related streams
    • Electronics and Electrical
    • Electronics and Communication
    • Electronics and Instrumentation
  • Note about Electrical vacancies:
    • The speaker says electrical notifications may come separately later (via separate announcements).
    • This video focuses on electronics/EC streams.

2) Eligibility criteria

  • Age limit: 28 years
    • As of: 16th September (last date to apply)
  • Qualification requirement:
    • Candidates must have B.Tech completed (or meet the degree/mark-sheet criteria as described).
    • 4th-year students: the speaker states they are not eligible.
      • However, they also imply eligibility depends on completion status and required documents/mark sheet.

3) Application fee structure (as explained)

  • General candidates:
    • Initially pay â‚č750
    • If you appear in the exam, you get â‚č500 refunded
    • Effective fee = â‚č250
  • Women candidates and SC/ST/PWD/Ex-servicemen:
    • No fee (as stated)

4) Selection procedure overview

  1. Written Test (100 marks total)
  2. Interview (100 marks total)
  3. Final selection calculation:
    • Final / aggregate = (Written marks + Interview marks) / 2
    • Weighted equally: 50% written, 50% interview
  4. Minimum cut-qualifying requirements must be satisfied before ranks/cut-offs matter.

5) Written test structure (100 marks)

  • Part A: Technical
    • 80 marks total
    • 80 questions, each question = 1 mark
    • Negative marking present:
      • Correct: +1
      • Wrong: −1/3
  • Part B: Aptitude
    • 20 marks total
    • 15 questions (as described):
      • 10 questions × 1 mark
      • 5 questions × 2 marks
    • No negative marking for aptitude

Minimum qualifying requirements for Written Test

  • Technical (Part A): must score at least 40 marks (speaker states “out of 80”)
  • Aptitude (Part B): must score at least 10 marks (speaker states “out of 20”)

Speaker’s interpretation: even if your rank is high, failing these minima means you won’t be selected.

6) Interview structure and minimum criteria

  • Interview marks: 100
  • Minimum required in interview: 50 marks

Speaker’s rule: if interview score is below 50, written performance becomes irrelevant for selection.

7) Aggregate / final selection minimum requirement

  • After individual minima are met:
    • Aggregate must be > 60%
  • Since aggregate is the average of written and interview, the idea is:
    • Written + Interview average should exceed 60 out of 100.

8) Cut-off discussion (historical reasoning)

  • The speaker compares:
    • vacancy counts
    • and how many candidates are selected
  • Core idea: selection depends on how many candidates meet the effective minimum qualifying thresholds.
  • Prior-year reasoning (2023 and 2025 referenced; also general mention of 2024/2025):
    • Even if they “want” to select more (e.g., 113 or similar), the number called/selected can be limited.
  • “Effective paper reduction” concept:
    • Some technical questions are stated to be “wrong from ISRO side” and removed.
    • This reduces the effective total marks (example given: effectively 98/97 depending on year).
    • It changes raw-score equivalents (example numbers mentioned: around 49.73 and 49).

9) EC syllabus guidance / paper coverage (as claimed)

  • The speaker suggests GATE EC syllabus is “enough” for ISRO written test.
  • Claimed distribution:
    • ~90% from GATE EC topics
    • ~max 10% from topics not typically covered in standard GATE EC prep
  • Non-GATE EC topics that may still appear (examples mentioned):
    • microprocessor
    • measurement
    • power electronics
    • VHDL
  • Question style examples discussed:
    • formula-based
    • direct concept-based MCQs
    • repeated GATE PYQs with the same data
  • Time management claim:
    • 95 questions in 120 minutes
    • about ~1 minute per question

10) Recommended preparation methodology (step-by-step)

  • Primary strategy:
    • If already preparing for GATE EC, continue focusing on GATE
    • Treat ISRO prep as an extension: solve ISRO PYQs to learn patterns
  • If syllabus already completed / dropper / reappearing:
    • quick revision of the syllabus
    • solve ISRO previous-year question papers
  • If you’re in ongoing GATE prep:
    • keep GATE focus
    • solve ISRO papers in parallel when possible

Target scores (suggested benchmarks)

  • Technical: aim ~45 / 80
  • Aptitude: aim ~15 / 20
  • Expected written total: ~60 / 100
  • Then in interview:
    • aim > 60 ideally
    • (speaker says interview is conceptual but you’ll have time)

Execution priority

  • Clear the written test first
  • Then prepare for the interview after written clearance.

11) Availability of practice material (where to get PYQs)

The speaker says they provide ISRO previous-year papers via their community:

  • Uploads to their Telegram group
  • Uploads in the file section
  • Mentioned examples:
    • 13 years PYQ
    • 2023 PYQ
    • 2025 question paper (as available)

12) Possible exam timeline (speculative)

  • No confirmed date yet (per speaker).
  • Based on past patterns, they predict:
    • Written test: likely December or January
    • Interview: likely July
  • They claim the written test may occur before GATE exam time.

13) What to do regarding interview prep (given emphasis)

  • Don’t over-focus on interview prep until the written test is cleared.
  • After clearing written test, prepare for the interview using the guidance they provide (speaker states they’ll handle details).

Sources / speakers featured

  • Single speaker: an instructor/mentor from PrepFusion (no individual name provided in the transcript).

Original video