From our research
What this interview looks like
Each PSU shortlists candidates on their GATE score in the relevant paper, in a ratio such as five to eight candidates per vacancy, and calls them to a personal interview, sometimes preceded by a group discussion or a short group task. The interview is typically 20 to 30 minutes before a panel of four to six: a general manager or executive director in the chair, a senior engineer from the discipline, an HR executive and often an external academic or a representative for reserved categories. The technical member usually starts from the final-year project and internship and moves to GATE-level fundamentals of the discipline with a plant or field twist. The HR and chair members probe why a PSU and why this company, willingness for all-India posting at remote plants, rigs, mines or project sites, the service bond and training year, other offers, and awareness of what the company does today. Weightage differs by company: GATE usually carries 75 to 85 per cent and the GD and interview together 15 to 25 per cent, while ONGC gives the interview a larger share. Final merit is GATE plus GD and PI, with a qualifying minimum in the interview for most companies. The ExamPilot mock compresses this into a 16-minute sitting: introduction, a six-minute discipline round, four minutes on fit and posting, two plant situations and a close, with the real panel's mix of English and Hindi.
How it is weighted
NTPC and NHPC weight final merit roughly GATE 85 : personal interview 15; PGCIL GATE 85 : group discussion 3 : interview 12; THDC and SJVN follow a similar GATE-dominant pattern. A qualifying minimum in the interview applies, so a weak interview can drop a high GATE scorer out of the merit list.
Who this is for
Full-time B.E./B.Tech (NTPC and PGCIL ask for 65 per cent for general and OBC, 55 per cent for SC, ST and PwBD; NHPC and SJVN around 60 per cent) in Electrical, Mechanical, Electronics, Instrumentation, Civil or allied branches, with a valid GATE score of the current year in the matching paper. Shortlisting is on the GATE score alone; the interview call is in a ratio of a few candidates per vacancy.
The panel focuses on
- Thermal cycle, boiler, turbine and generator fundamentals, or transmission, protection and substation basics for PGCIL
- Final-year project and internship: what you personally did, with one number
- Why the power sector and this company rather than a private utility or higher studies
- Willingness for a remote plant or hydro project posting and a shift roster
- Service bond, one-year training and the E1/E2 executive grade
- Awareness of installed capacity, renewable push, flexibilisation of coal plants and grid events
Step 1
Pick your subject
The expert on the panel probes these areas at the level of this post. Optional here; you can choose during setup.
Step 2
Choose how you want to be interviewed
1:1 interview
One interviewer runs every round and adapts the focus as you go. Lower pressure; ideal for a first attempt.
Shri Rajendra Prasad Tiwari
Hiring manager
Panel interview · 3 members
Most realisticEach member leads their own round and hands over to the next. They hear each other, so a weak answer will be revisited.
Ms. Neha Kulkarni
HR member
Ms. Ananya Sen
Technical lead
Shri Rajendra Prasad Tiwari
Hiring manager
What to expect
5 rounds · 16 minutes
The personal-interview part of a Maharatna or Navratna PSU selection, the way NTPC, ONGC, IOCL, BHEL, PGCIL, SAIL, Coal India, BEL and HAL run it: a short introduction with the HR member, a long technical round in the candidate's GATE discipline led by a senior engineer from the plant or field, an HR-and-fit round with a general manager on why a PSU, all-India posting, the service bond and career path, two plant or site situations on safety, breakdowns, contractors and unions, and a brief close. Real panels are four to six members for 20 to 30 minutes and mix English and Hindi freely; the technical round usually starts from the final-year project and goes to GATE-level fundamentals.
- Round 1
Introduction & background
· 2:00Put the candidate at ease, hear their education, GATE discipline, final-year project and any work experience, and pick one thread the technical member can pull on.
Ms. Neha Kulkarni2–3 questionsup to 1 follow-up each - Round 2
Technical round in the GATE discipline
· 6:00Test GATE-level fundamentals in the candidate's discipline and whether they can connect them to real plant or field equipment; probe the final-year project for what the candidate personally did.
Ms. Ananya Sen3–5 questionsup to 2 follow-ups each - Round 3
Why a PSU, posting, bond & career
· 4:00Assess motivation for a public-sector career, willingness for remote all-India postings, understanding of the executive-trainee bond and probation, and whether the candidate has a realistic view of the career path and the company.
Shri Rajendra Prasad Tiwari3–4 questionsup to 1 follow-up each - Round 4
Plant & site situations
· 3:00Assess judgement on safety, breakdowns, contractors and union relations in a plant or site setting, with the right sequence of actions.
Shri Rajendra Prasad Tiwari2–2 questionsup to 1 follow-up each - Round 5
Closing
· 1:00Close politely, confirm documents and joining readiness, and give no hint of the assessment.
Ms. Neha Kulkarni1–1 questions
Sample questions
PSU GD/PI Power PSUs interview questions
Questions panels commonly ask in the PSU GD/PI Power PSUs interview, with what a strong answer covers. Practise them aloud with the AI panel.
- Thermal cycle
In a coal-fired unit, why do we reheat steam after the high-pressure turbine instead of simply raising the boiler pressure further?
What a strong answer covers
Explains that reheating lifts the average temperature at which heat is added and, more importantly, keeps moisture at the low-pressure turbine exhaust within limits that protect the last-stage blades. A strong answer links this to cycle efficiency and blade erosion. Avoid saying reheating only increases efficiency without mentioning dryness fraction.
- Protection
A 400 kV transmission line trips on distance protection in Zone 1. What does that tell you about where the fault is, and what checks would the substation team do before charging it again?
What a strong answer covers
Zone 1 covers most of the protected line and trips without intentional delay, so the fault is likely on that line. Checks include relay and disturbance-recorder data, fault location, patrolling and line clearance from the control centre. Avoid suggesting immediate re-charging without confirming fault clearance and following switching procedure.
- Generator
Why must a synchronous generator be synchronised before closing the breaker onto the grid, and what happens if the phase angle is badly wrong at closing?
What a strong answer covers
Voltage, frequency, phase sequence and phase angle must match; a large angle difference causes heavy current surges and mechanical torque shocks that can damage the shaft, coupling and windings. Mention synchroscope or auto-synchroniser use. Avoid listing conditions without explaining the consequence of violating them.
- Project
Your final-year project was a grid-connected solar inverter. What was your personal part, and what efficiency or harmonic figure did you actually measure?
What a strong answer covers
A clear description of the candidate's own module such as the MPPT algorithm or the filter design, one measured number with how it was measured, and an honest note on gaps between simulation and hardware. Avoid quoting textbook figures as if they were your results.
- Sector awareness
Coal plants are now being asked to run at lower loads when solar generation peaks at midday. What technical problems does that create for the boiler and turbine?
What a strong answer covers
Discusses flame stability and oil support at low load, thermal stress from frequent cycling, lower efficiency, and emission control behaviour, and why flexible operation is needed for renewable integration. Avoid inventing specific minimum-load percentages or policy dates.
- Motivation
You have a GATE score that could get you into an IIT M.Tech. Why join a power PSU now instead?
What a strong answer covers
A genuine reason such as wanting large-plant exposure early, family responsibility or interest in operations, plus an honest view of higher studies later through company schemes. Avoid dismissing higher studies or pretending you never considered it.
- Posting
Your first posting could be a hydro project in a remote Himalayan valley with poor connectivity. How will you and your family manage that for three or four years?
What a strong answer covers
Realistic acceptance, an understanding of project townships, rotational leave and the learning value of construction-stage projects, and a concrete family arrangement. Avoid a quick yes that sounds rehearsed, and avoid conditions you cannot back up.
- Safety
During a night shift, a contractor's worker wants to start work on a conveyor before the permit to work is signed because his supervisor is pressuring him. What do you do?
What a strong answer covers
Stops the work, explains that isolation and the permit protect the worker, completes or verifies the permit and lockout properly, and informs the shift in-charge about the supervisor's pressure. Avoid letting production pressure override the permit system.
- Civil engineering
In civil engineering terms, what would you check first if you saw new cracks in the cooling tower shell during an inspection?
What a strong answer covers
Records crack pattern, width and orientation, checks for corrosion of reinforcement, settlement or thermal effects, compares with previous inspection records and escalates for structural assessment. Avoid jumping to repairs before understanding the cause.
Reading is not rehearsing. Answer these out loud to an AI PSU GD/PI Power PSUs panel that follows up like the real one.
Practise these questionsMeet the panel
Your AI interviewers
Distinct personas, voices and questioning styles, briefed on this post.
Ms. Neha Kulkarni
ChairHR member
HR business partner, IT services
Friendly, efficient, detail-checking.
Female voice · 4 languages
Ms. Ananya Sen
Technical lead
Staff engineer / technical lead
Curious, precise, collaborative.
Female voice · 3 languages
Shri Rajendra Prasad Tiwari
Hiring manager
General Manager (Operations) at a 2,000 MW NTPC thermal station; 28 years from Executive Trainee to GM; sits on ET selection panels
Grounded, plain-spoken, tests willingness and judgement more than vocabulary.
Male voice · 3 languages
Languages
Answer in the language you think in
The panel asks in your chosen language. Switch mid-answer if you like.
- English
- Hinglish (Hindi + English)Hinglish
How scoring works
A report you can act on
Every round is scored on the rubric
Each interviewer scores only the criteria their round covers. Weights add up to your overall score out of 100.
Only what you actually said counts
Feedback quotes your own answers. Rounds you skip show as “Not assessed” rather than a zero.
Communication is always measured
Fluency, clarity, confidence and structure are tracked across the whole interview, in any language.
Pass mark, then a plan
You see the pass mark for this interview, your gaps, and the courses that close them fastest.
Scored on
- Technical depth35%
GATE-level command of the discipline: states the right principle, gets the direction and order of magnitude right, explains why a formula holds and where it breaks, and connects theory to real plant or field equipment; does not bluff when unsure.
- Problem solving & judgement20%
Reasons step by step through a numerical or a fault scenario, asks what data is needed, states assumptions, checks limits, and in plant situations sequences actions correctly with safety and isolation before diagnosis and repair.
- Communication20%
Clear and concise in English or Hindi; explains a technical idea so a non-specialist panel member follows it; answers the question asked; comfortable saying I do not know and reasoning from first principles.
- Fit & attitude25%
Credible reason for a public-sector career beyond job security, genuine willingness for remote plant, mine, rig or project postings and transfers, honest about the bond and about other attempts, respect for technicians, contractors and union members, and a realistic picture of an executive trainee's first years.
Pass mark 60 / 100 · PSU engineer-trainee personal interview (GATE-shortlisted)
Keep exploring
More PSU GD/PI interviews
- PSU GD/PI Oil & Gas PSUs interviewGraduate Trainee or Engineer / Officer (E1 grade), fresh engineers and geoscientists, typically up to 27–30 years with relaxations
- PSU GD/PI Heavy Engg & Mining interviewEngineer Trainee or Management Trainee (Technical) in E1 grade, fresh engineers, typically up to 27–30 years with relaxations
- PSU GD/PI Defence PSUs interviewProbationary Engineer, Design Trainee or Management Trainee in E1/E2 grade, fresh engineers, typically up to 25–28 years with relaxations