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
BEL and HAL weight final merit roughly GATE 85 : interview 15; BEML, Mazagon Dock and Cochin Shipyard follow a similar GATE-dominant pattern with the interview around 15 to 25 per cent. A qualifying minimum in the interview applies in most of these companies.
Who this is for
B.E./B.Tech with 55 to 65 per cent (BEL and HAL commonly ask for first class or 60 to 65 per cent for general, with relaxations for SC, ST and PwBD) in Electronics, Electrical, Mechanical, Computer Science, Civil or allied branches, with a valid GATE score in the matching paper. BEL recruits mostly Electronics, Electrical, Mechanical and Computer Science; HAL Mechanical, Electrical, Electronics and Civil; the shipyards Mechanical, Electrical and Naval Architecture.
The panel focuses on
- Discipline fundamentals applied to radar, communication and electro-optic systems, aircraft structures and engines, or ship systems
- Final-year project and internship, with your own contribution and one result
- Why a defence PSU: indigenisation, Make in India in defence, export push and the company's current programmes
- Willingness for posting at any unit or shipyard, and for security and confidentiality discipline
- Service bond, training year and the E1/E2 grade
- Quality and reliability culture: documentation, testing, traceability and working with the armed forces as customer
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.
Ms. Ananya Sen
Technical lead
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
Mr. Vikram Malhotra
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.
Mr. Vikram Malhotra3–4 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.
Mr. Vikram Malhotra2–2 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 Defence PSUs interview questions
Questions panels commonly ask in the PSU GD/PI Defence PSUs interview, with what a strong answer covers. Practise them aloud with the AI panel.
- Radar
Explain how a pulse radar measures the range of a target, and what limits the minimum range it can detect.
What a strong answer covers
Range is half the round-trip time multiplied by the speed of light; the minimum range is limited by pulse width and receiver recovery time. Mention trade-offs between pulse width, range resolution and energy. Avoid quoting the formula without explaining the physical reason.
- Aerospace
In aircraft structures, why are aluminium alloys and composites preferred over steel, and what new problems do composites bring?
What a strong answer covers
High strength-to-weight ratio and fatigue behaviour favour them, while composites bring challenges in damage detection, repair, moisture and lightning protection. Avoid saying composites are simply stronger in every way.
- Quality
What does traceability mean in defence manufacturing, and why would a missing batch record hold up delivery of an otherwise perfect unit?
What a strong answer covers
Explains linking every component and process step to records so failures can be investigated and quality assured, and why the customer and quality agencies will not accept an unverified unit. Avoid treating documentation as paperwork for its own sake.
- Security
You will handle classified drawings and may not be able to discuss your work with family or friends. How do you feel about that?
What a strong answer covers
Calm acceptance of confidentiality rules, understanding of why they exist, and practical habits like not discussing work on social media. Avoid treating it lightly or claiming it does not apply to junior engineers.
- Indigenisation
Indigenisation of defence equipment is a major national priority. In your discipline, what makes it hard to indigenise a component that was earlier imported?
What a strong answer covers
Discusses design data access, materials and process qualification, testing standards, small production volumes and long certification times. Avoid naming specific programmes or numbers you are unsure of.
- Project
In your final-year project on a drone flight controller, how did you tune the control loop, and what went wrong in the first flight tests?
What a strong answer covers
Describes the candidate's tuning method for proportional, integral and derivative gains, what instability was observed and how it was corrected. Avoid describing only the final working version.
- Shipbuilding
In shipbuilding, why is welding quality inspected so carefully, and which tests would you expect on a hull weld?
What a strong answer covers
Links weld defects to fatigue cracks and failure at sea, and names methods such as visual inspection, radiography and ultrasonic testing. Avoid listing tests without explaining what each detects.
- Commitment
You may be posted to a unit far from home, such as a facility in a small town. Why should we believe you will stay rather than leave in a year for a private offer?
What a strong answer covers
Genuine reasons such as interest in strategic systems and long-term career growth, combined with honesty that private offers exist and what keeps you committed. Avoid making promises that sound rehearsed.
- Reliability
A test fixture shows that a circuit card passes environmental testing but fails intermittently at the customer's site. How would you go about investigating?
What a strong answer covers
A structured approach: collect field data, compare test and field conditions such as vibration and temperature, check solder joints and connectors, and use failure analysis. Avoid blaming the customer's handling without evidence.
Reading is not rehearsing. Answer these out loud to an AI PSU GD/PI Defence 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
Mr. Vikram Malhotra
Hiring manager
Engineering manager / Regional manager (hiring manager)
Direct, outcome-focused, fair but demanding.
Male voice · 2 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 Power PSUs interviewExecutive Trainee (E1/E2 grade), fresh engineers and up to 3–5 years' experience, typically 27–30 years upper age with relaxations
- 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