100+ Free BHEL Supervisor Trainee Practice Questions

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2026 Statistics

Key Facts: BHEL Supervisor Trainee Exam

150

CBE MCQs

BHEL Exam Pattern PDF

120 min

Duration

Official ST pattern

+1 / −¼

Marking

BHEL Exam Pattern PDF

CBE only

Final Merit

Advt. 03/2025 (ST)

₹1072

UR/EWS/OBC Fee

Advt. 03/2025

₹472

SC/ST/PWD/Ex-SM Fee

Advt. 03/2025

BHEL Supervisor Trainee Stage I CBE: 150 MCQs / 150 marks / 120 minutes — Subject 100, Reasoning 20, GK 10, English 20; +1/−¼ marking; bilingual. Stage II DV is qualifying only; merit = CBE only. Fees: ₹1072 (UR/EWS/OBC) or ₹472 (SC/ST/PWD/Ex-SM).

Sample BHEL Supervisor Trainee Practice Questions

Try these sample questions to test your BHEL Supervisor Trainee exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a series DC circuit, three resistors of 2 Ω, 3 Ω and 5 Ω are connected across a 20 V supply. What is the current?

A.2 A

B.4 A

C.1 A

D.10 A

Explanation: Total resistance R = 2 + 3 + 5 = 10 Ω. Current I = V/R = 20/10 = 2 A.

2The SI unit of electrical resistance is the:

A.ampere

B.ohm

C.volt

D.watt

Explanation: Electrical resistance is measured in ohms (Ω). Ampere is current, volt is potential difference, and watt is power.

3Which machine converts mechanical energy into electrical energy?

A.Transformer

B.Motor

C.Generator

D.Rectifier

Explanation: A generator converts mechanical energy into electrical energy. A motor does the reverse; a transformer changes AC voltage level; a rectifier converts AC to DC.

4Ohm's law states that V =:

A.I/R

B.I + R

C.I − R

D.IR

Explanation: Ohm's law: voltage V equals current I times resistance R (V = IR), for ohmic conductors at constant temperature.

5In a three-phase system, the line voltage is √3 times the phase voltage for a:

A.star (Y) connection

B.delta (Δ) connection only

C.series DC circuit

D.single-phase transformer

Explanation: In a star-connected three-phase system, V_L = √3 V_ph. In delta, V_L = V_ph.

6The specific gravity of electrolyte in a fully charged lead-acid battery is approximately:

A.1.00

B.1.28

C.0.80

D.2.50

Explanation: A fully charged lead-acid cell typically has electrolyte specific gravity around 1.25–1.28. Near 1.00 indicates discharged/water-like density.

7A transformer works on the principle of:

A.self induction only

B.electrostatic induction

C.mutual induction

D.photoelectric effect

Explanation: Transformers transfer energy between windings by mutual induction under alternating flux.

8Power factor of a pure resistive AC circuit is:

A.0

B.0.5 lagging

C.infinity

D.1 (unity)

Explanation: In a purely resistive circuit, voltage and current are in phase, so cos φ = 1 (unity power factor).

9The primary function of a fuse in an electrical circuit is to:

A.protect against overcurrent

B.increase voltage

C.improve power factor

D.store energy

Explanation: A fuse melts under excessive current, interrupting the circuit to protect conductors and equipment.

10Which of the following is a ferromagnetic material?

A.Copper

B.Soft iron

C.Aluminium

D.Wood

Explanation: Soft iron is strongly ferromagnetic and used in magnetic cores. Copper and aluminium are diamagnetic/paramagnetic conductors; wood is non-magnetic.

About the BHEL Supervisor Trainee Exam

The BHEL Supervisor Trainee (ST) recruitment selects diploma engineers for supervisory roles across BHEL manufacturing units and power-sector sites. Selection is a two-stage process: a scored Computer Based Examination followed by qualifying Document Verification/Scrutiny. Unlike Engineer Trainee (75% CBE + 25% interview), ST final merit is based only on CBE marks.

Assessment

Stage I: Computer Based Examination — 150 objective MCQs, 150 marks, 120 minutes, bilingual Hindi/English, +1/−0.25 marking. Stage II: Document Verification/Scrutiny — qualifying only. Final merit based only on CBE score (no scored interview for Supervisor Trainees).

Time Limit

120 minutes

Passing Score

Category-wise CBE cut-off; shortlisting for DV typically in 1:3 vacancy ratio; final merit solely on CBE

Exam Fee

₹1072 (UR/EWS/OBC); ₹472 (SC/ST/PWD/Ex-Servicemen) (Bharat Heavy Electricals Limited (BHEL))

BHEL Supervisor Trainee Exam Content Outline

67%

Subject / Discipline Knowledge

Diploma-level Electrical, Mechanical, Civil, and Electronics topics matching the official 100-question subject block

13%

Test of Reasoning

Series, analogies, coding-decoding, directions, syllogisms, and analytical reasoning

General Knowledge

India GK, science & technology, economy, and power/industry awareness

13%

General English

Grammar, vocabulary, error spotting, fill-in-the-blanks, and comprehension

How to Pass the BHEL Supervisor Trainee Exam

What You Need to Know

Passing score: Category-wise CBE cut-off; shortlisting for DV typically in 1:3 vacancy ratio; final merit solely on CBE
Assessment: Stage I: Computer Based Examination — 150 objective MCQs, 150 marks, 120 minutes, bilingual Hindi/English, +1/−0.25 marking. Stage II: Document Verification/Scrutiny — qualifying only. Final merit based only on CBE score (no scored interview for Supervisor Trainees).
Time limit: 120 minutes
Exam fee: ₹1072 (UR/EWS/OBC); ₹472 (SC/ST/PWD/Ex-Servicemen)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

BHEL Supervisor Trainee Study Tips from Top Performers

1Prioritize diploma core subjects — they form 100 of 150 official CBE marks.

2Practice under 1/4 negative marking: skip low-confidence guesses on calculation traps.

3Use bilingual comfort carefully; English is authoritative if Hindi/English wording differs.

4Keep reasoning and English sharp for easy rank gains without neglecting subject depth.

5Confirm documents early — Stage II DV/Scrutiny is mandatory though not scored.

Frequently Asked Questions

What is the BHEL Supervisor Trainee exam pattern?

As per the official BHEL Exam Pattern PDF for Supervisor Trainees, Stage I CBE has 150 objective MCQs: 100 Subject/Discipline, 20 Reasoning, 10 General Knowledge, and 20 General English. Duration is 120 minutes. Each correct answer scores 1 mark and 1/4 mark is deducted for each wrong answer. Questions are bilingual (Hindi/English).

Is there an interview for BHEL Supervisor Trainee?

No scored interview is used for Supervisor Trainee final merit. Stage II is Document Verification/Scrutiny only and is qualifying. Final merit is prepared solely on Computer Based Examination score. (Engineer Trainee uses 75% CBE + 25% interview — that split does not apply to ST.)

What is the application fee for BHEL Supervisor Trainee?

As per Advt. 03/2025: UR/EWS/OBC pay Examination Fee ₹600 plus Processing Fee ₹400+GST (total ₹1072). SC/ST/PWD/Ex-Servicemen pay Examination Fee NIL plus Processing Fee ₹400+GST (total ₹472). Bank/gateway charges may apply.

How are candidates shortlisted after the CBE?

Based on CBE marks, candidates are shortlisted for Document Verification in order of merit, generally in the ratio of 1:3 to vacancies in each category, with relaxations for PwD and Ex-Servicemen as stated in the advertisement.

Which disciplines are covered in the subject section?

Candidates appear in their applied diploma discipline (Mechanical, Electrical, Civil, or Electronics, including equivalent branches listed in the advertisement). The subject block carries 100 of the 150 CBE questions.