Verified against Official UPSC Engineering Services Examination (ESE / IES) Scheme
UPSC Engineering Services Examination (ESE / IES) Anatomy & Key Highlights
The Engineering Services Examination (ESE), popularly known as IES, is conducted annually by the Union Public Service Commission (UPSC) for recruitment to prestigious Group ‘A’ engineering services across Indian Railways, Central Engineering Service, Central Power Engineering Service, Military Engineer Services (MES), and Indian Telecommunication Service. Selection is a comprehensive three-stage process: Stage-I Preliminary Examination (Objective: Paper I 200M + Paper II 300M = 500 Marks), Stage-II Main Examination (Conventional Descriptive: Two discipline papers of 300M each = 600 Marks), and Stage-III Personality Test / Interview (200 Marks). Final merit is compiled out of 1300 Marks across four disciplines: Civil, Mechanical, Electrical, and Electronics & Telecommunication Engineering.
Conducting Body
Union Public Service Commission (UPSC), Dholpur House, New Delhi
Exam Frequency
Annual (Stage-I Prelims in February/June • Stage-II Mains in June/August)
Total Questions & Marks
Stage-I Prelims: Paper I (GS & Engg Aptitude): 100 MCQs (200 Marks) • Paper II (Discipline Engineering): 150 MCQs (300 Marks) — Total: 250 MCQs (500 Marks)
Exam Duration
Stage-I Prelims: 5 Hours Total (Paper I: 2 Hours / 120 mins • Paper II: 3 Hours / 180 mins)
Marking Scheme
Paper I & Paper II: +2.0 Marks per correct answer, -0.66 (1/3rd) Negative Marking Penalty for each incorrect response
Cutoff / Standards
Minimum qualifying marks determined separately by UPSC for Stage-I (out of 500), Stage-I+II (out of 1100), and Final All-India Merit (out of 1300)
Score Validity
Valid strictly for the respective Engineering Services Examination cycle
Attempt Limit
No statutory attempt limit prescribed by UPSC; candidates may appear until exceeding the upper age ceiling (21 to 30 years with category relaxations)
Minimum Educational Qualifications & Eligibility Norms
UPSC Engineering Services Examination (ESE / IES) Statutory Eligibility Norms
Candidates applying for UPSC ESE must satisfy the following statutory conditions regarding engineering qualifications, age limits, and medical fitness specified in the official UPSC ESE Examination Gazette:
Statutory Engineering Degree
Degree in Engineering (B.E. / B.Tech / AMIE)
- Candidate must have obtained a degree in Engineering (B.E. / B.Tech or equivalent) from a recognized University incorporated by an Act of the Central or State Legislature, or other educational institutions established by an Act of Parliament, or deemed to be Universities under Section 3 of UGC Act 1956.
- Passed Sections A and B of the Institution Examinations of the Institution of Engineers (India) (AMIE), or Graduate Membership Examination of the Institution of Electronics and Telecommunication Engineers (India) (AMIETE), or equivalent recognized engineering qualifications.
- M.Sc. degree or equivalent with Wireless Communication, Electronics, Radio Physics or Radio Engineering as a special subject is eligible for specific posts in the Electronics & Telecommunication cadre.
- Final year engineering students are eligible to apply for the Preliminary Examination, provided they submit proof of passing during DAF submission for the Main Examination.
Age Bracket & Statutory Relaxations
Age Boundary (21 to 30 Years)
- Minimum Age: 21 Years • Maximum Age: 30 Years as on 1st August of the examination year.
- Other Backward Classes (OBC): 3 Years Upper Age Relaxation (up to 33 years).
- SC / ST Candidates: 5 Years Upper Age Relaxation (up to 35 years).
- Persons with Benchmark Disabilities (PwBD): Up to 10 Years Upper Age Relaxation.
- Departmental Candidates (Central Government / Railways / Defence): Up to 5 years relaxation (up to 35 years) for continuous government service.
Four Approved Engineering Streams
Discipline Categories
- Category I: Civil Engineering (Group A Cadres in Railways, MES, CPWD, BRO, CWC).
- Category II: Mechanical Engineering (Group A Cadres in Indian Railways, MES, IDSE, CPES).
- Category III: Electrical Engineering (Group A Cadres in Railways, MES, CPES, Naval Armament).
- Category IV: Electronics & Telecommunication Engineering (Group A Cadres in ITS, CPES, MES, Wireless).
- Candidates may apply under only ONE engineering discipline category per examination cycle.
Calculator & Exam Rules
Calculator & Electronic Device Restrictions
- Stage-I Preliminary Examination: Use of ANY calculator (scientific, programmable, or basic) is STRICTLY PROHIBITED. All numerical problems are designed for manual arithmetic computation.
- Stage-II Main Examination: Non-programmable battery-operated scientific calculators are ALLOWED in the conventional descriptive papers.
- Mobile phones, smartwatches, and bluetooth devices are strictly banned in examination centres.
Important: Candidates admitted to the examination must satisfy physical standards for admission to Engineering Services Examination as per regulations given in the official rules published by the Ministry of Communications.
Official Exam Structure & Marking Scheme
UPSC Engineering Services Examination Paper Structure & Marks Distribution
Section-by-section breakdown of total questions, maximum marks, and time duration verified against the official UPSC Engineering Services Examination scheme.
Preliminary Examination
| Subject / Section |
Questions |
Marks |
Duration |
| General Studies and Engineering Aptitude |
100 MCQs |
200 Marks |
120 Minutes |
| Civil Engineering (Objective) |
150 MCQs |
300 Marks |
180 Minutes |
| Mechanical Engineering (Objective) |
150 MCQs |
300 Marks |
180 Minutes |
| Electrical Engineering (Objective) |
150 MCQs |
300 Marks |
180 Minutes |
| Electronics & Telecommunication Engineering (Objective) |
150 MCQs |
300 Marks |
180 Minutes |
| Total (Preliminary Examination) |
700 Questions |
1,400 Marks |
840 Minutes |
Step-by-Step Preparation Roadmap
UPSC ESE / IES Prelims High-Yield Preparation Strategy & Roadmap
Cracking UPSC ESE requires rigorous technical precision in core engineering combined with disciplined coverage of the 10 General Studies & Engineering Aptitude modules. Follow this structured roadmap:
1
Master Paper I GS & Engineering Aptitude (200 Marks)
Cover all 10 prescribed non-technical modules: Engineering Mathematics, Ethics in Engineering, Project Management (CPM/PERT network techniques), Material Science (crystal structures, phase diagrams), Standards & Quality (ISO, TQM, Six Sigma), Environment & Climate Change, and ICT. Scoring 100+ in Paper I gives a critical competitive edge.
2
Deep Numerical Problem Solving in Discipline Core (300 Marks)
Paper II features 150 technical MCQs requiring rapid formula application, unit consistency, and mental math (since calculators are prohibited in Prelims). Focus heavily on standard Indian Standards / IEEE / ASME code provisions, conceptual derivations, and standard numerical shortcuts.
3
Solve 15+ Years UPSC ESE Previous Year Papers
Solve all official UPSC ESE Prelims papers from 2017 onwards (current 2-paper pattern). Categorize recurring themes in your discipline (e.g. SFD/BMD & Mohr circle in Civil/Mech, Thevenin/Norton & root locus in Elec/ECE).
4
Full 5-Hour Combined CBT Mock Simulators
Practice 2-shift simulations mirroring real ESE exam day: 2 hours Paper I (morning shift) followed by 3 hours Paper II (afternoon shift) to develop sustained cognitive stamina and eliminate negative marking errors (+2.0 / -0.66).
5
Simultaneous Conventional Problem Practice for Mains
Maintain step-by-step descriptive calculation habits while solving MCQs, as Stage-II Mains (600 marks) requires comprehensive handwritten solutions with scientific calculators.
