ISRO Technical Questions

Overview

This page contains ISRO technical questions from ISRO written examination papers with detailed solutions.

Technical Focus

ISRO technical section includes engineering fundamentals, space technology concepts, and discipline-specific questions. Master core engineering subjects and space technology basics to succeed.

ISRO technical questions overview

ISRO Written Examination Technical Section:

• Questions: 40-50 questions
• Time: 60 minutes
• Topics: Engineering Fundamentals, Space Technology, Discipline-Specific

Technical problems

Question 1: rocket propulsion

Q1: Calculate the specific impulse of a rocket engine with exhaust velocity 3000 m/s.

Solution:

Specific Impulse (Isp) = Exhaust Velocity / g
Isp = 3000 m/s / 9.8 m/s² ≈ 306 seconds

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Gate-linked prep notes (2026)

For PSU-style hiring, candidates often combine GATE fundamentals with company aptitude/technical screens:

1. Revise core branch subjects (not only coding)
2. Practice numerical aptitude at campus-placement speed
3. Revisit previous technical MCQs on this site
4. Keep document readiness (gate scorecard if applicable, marksheets)

Extra technical drill

Q: Why do many PSU drives still test engineering fundamentals heavily?

Roles are often engineering-core, not pure software-product SDE. Expect thermodynamics / power systems / electronics / strength of materials style depth depending on your discipline, plus aptitude.

Q: Should CSE students ignore GATE topics for ISRO?

Not entirely. OS, DBMS, networks, and DSA still appear in technical rounds. Pair them with the aptitude mock on this site.