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UPSC Civil Services Examination (CSE) for engineers

Evidence status: 🟢 official. Scheme, marks, paper formats, and the Electrical Engineering optional topic list below were checked on 2026-10-04 against the UPSC Civil Services (Preliminary) Examination, 2026 notification, the Civil Services Examination Rules – 2026 (Gazette of India Extraordinary, via DoPT CSE portal), and official CSM General Studies question papers on upsc.gov.in, all opened this run.

Many engineers take CSE. This page covers the examination structure, the General Studies Mains answer-writing framework, and the Electrical Engineering optional, which overlaps heavily with what a GATE/ESE EE aspirant already studies.

At a glance
Conducted by Union Public Service Commission (UPSC)
Stages Preliminary (objective, screening) → Main (descriptive written) → Personality test
Final merit Mains written 1750 + Personality test 275 = 2025. Prelims only decides who reaches Mains
Age and attempts Set by the notification (general category: 21 to 32 years on 1 August 2026, 6 attempts, with category relaxations)
Qualification Any graduate degree from a recognised university

Official sources

Exam pattern

Prelims (negative marking: one-third of the question's marks deducted per wrong answer; blank answers carry no penalty)

Paper Marks Time Role
General Studies I 200 2 h Decides who qualifies for Mains
General Studies II (CSAT) 200 2 h Qualifying, minimum 33% (66 marks) needed

Mains (descriptive written; each paper is of three hours)

Paper Marks Counted in merit
Paper A: Indian language (from 8th Schedule) 300 No (qualifying, 25% minimum)
Paper B: English 300 No (qualifying, 25% minimum)
Paper I: Essay 250 Yes
Paper II: General Studies I 250 Yes
Paper III: General Studies II 250 Yes
Paper IV: General Studies III 250 Yes
Paper V: General Studies IV 250 Yes
Paper VI: Optional Subject Paper 1 250 Yes
Paper VII: Optional Subject Paper 2 250 Yes

Essay, General Studies and optional papers are evaluated only for candidates who score at least 25% (75/300 marks) in each of qualifying Papers A and B.

General Studies question paper format (from official CSM papers): Each General Studies paper (Papers II to V) carries 250 marks with 20 compulsory questions in 3 hours (180 minutes): - Questions 1–10: 10 marks each, 150-word limit (~7 minutes per question). - Questions 11–20: 15 marks each, 250-word limit (~11 minutes per question). - Target pace: 7–8 minutes for a 10-marker, 11–12 minutes for a 15-marker, reserving 10 minutes for reading and review.

Syllabus

The official notification details the syllabi for all nine Mains papers.

General Studies papers overview: - General Studies I (Paper II): Indian Heritage and Culture, History and Geography of the World and Society. - General Studies II (Paper III): Governance, Constitution, Polity, Social Justice and International relations. - General Studies III (Paper IV): Technology, Economic Development, Bio-diversity, Environment, Security and Disaster Management. - General Studies IV (Paper V): Ethics, Integrity and Aptitude.

Shared modules this exam uses: Polity, History, Geography, Economy, Environment, Science and technology, General awareness, CSAT, Descriptive writing.

Electrical Engineering optional (topic summary; the notification and Gazette rules are the authority)

Paper I Paper II
Circuit theory Control systems
Signals and systems Microprocessors and microcomputers
Electromagnetic theory Measurement and instrumentation
Analog electronics Power systems: analysis and control
Digital electronics Power system protection
Energy conversion (machines) Digital communication
Power electronics and electric drives
Analog communication

Compared with GATE EE, the new areas are analog and digital communication and microprocessors and microcomputers. Everything else is the GATE/ESE core.

How to prepare (free, in order)

  1. Build the General Studies foundation first. Prelims GS-I (200 marks) decides who qualifies for Mains, while CSAT requires 33%. Study NCERT textbooks (Classes 6–12) for history, geography, polity, economics and general science. Read the Press Information Bureau (PIB) daily for government schemes and policy announcements.
  2. Mains carries the merit. Essay plus the four General Studies papers make up 1250 of the 1750 written marks, so begin weekly answer writing early against the syllabus in the notification.
  3. Decode the directive words (from inv:1469c0f5). Mains questions demand precise treatment based on their directive:
  4. Critically examine: Evaluate both sides against evidence — where the policy or institution succeeded and where it stalled or produced unintended stress — and deliver a reasoned, balanced verdict (do not offer one-sided advocacy).
  5. Discuss: Address different facets of the debate, outline contrasting viewpoints, and explore implications.
  6. Comment: State a clear, reasoned viewpoint directly and substantiate it with verifiable facts.
  7. Analyse: Break the topic into constitutive components (root causes, structural bottlenecks, stakeholder incentives) and explain how they interact.
  8. Structure answers across multiple dimensions. Split the demand into clear subheadings. Balance relevant dimensions (administrative, economic, constitutional/legal, technological, environmental, and ethical). Ground claims strictly in official data (Union Budget, Economic Survey, NITI Aayog, Law Commission reports, RBI data, constitutional articles, Supreme Court judgments) rather than unsubstantiated claims.
  9. Use free AI prompts for rubric-based self-evaluation. Write answers timed (7 minutes for a 10-marker, 11 minutes for a 15-marker). Paste your draft into the UPSC Mains answer evaluator prompt to audit demand fulfillment, introductory brevity, dimensional balance, substantiation validity, and word limit discipline. See an authentic syllabus-grounded breakdown in Mains practice breakdown.
  10. Choose and complete the optional subject early. For an engineer, the Electrical Engineering optional reuses the GATE/ESE core. Focus on bridging the non-GATE topics (analog and digital communication, microprocessors) early.
  11. Practise on the official papers under exam time. UPSC publishes past question papers free, including EE optional and General Studies papers. Solve them under strict 3-hour exam conditions to build endurance and time management.
  12. Clear the qualifying language papers. Papers A and B need 25% each (75/300 marks) and are not counted in merit. Review past papers to verify matriculation-level language competency.

Free resources

Official and free, for General Studies:

Mains answer-writing practice and self-evaluation:

For the EE optional, use the technical resources in free resources and the subject map.