100+ Free BTEB Welding Exam Practice Questions

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Sample BTEB Welding Exam Practice Questions

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

1A mild steel plate for a welding job measures 300 mm long and 150 mm wide. What is its area in square millimetres?

A.4,500 mm²

B.450 mm²

C.45,000 mm²

D.22,500 mm²

Explanation: Area of a rectangle is length multiplied by width: 300 mm x 150 mm = 45,000 mm². Basic area calculations like this are used to check material requirements before cutting and welding.

2How many millimetres are there in 12.5 centimetres?

A.12.5 mm

B.1.25 mm

C.125 mm

D.1,250 mm

Explanation: There are 10 millimetres in every centimetre, so 12.5 cm x 10 = 125 mm. Converting between cm and mm correctly is a basic requirement when reading workshop drawings and instruments.

3A welding job specification allows a root gap of 3 mm with a tolerance of plus or minus 10%. What is the maximum acceptable root gap?

A.3.0 mm

B.3.1 mm

C.2.7 mm

D.3.3 mm

Explanation: A 10% tolerance on 3 mm is 0.3 mm, so the maximum acceptable root gap is 3.0 + 0.3 = 3.3 mm. Applying tolerance and clearance limits correctly to job requirements is part of basic workplace calculation.

4A welder mixes brazing flux paste in a ratio of 2 parts flux powder to 5 parts water by volume. How much water is needed for 40 mL of flux powder?

A.16 mL

B.20 mL

C.80 mL

D.100 mL

Explanation: The ratio 2:5 means each part of powder corresponds to 5/2 = 2.5 parts of water. For 40 mL of powder, water needed = 40 x 2.5 = 100 mL. Ratio and proportion calculations are part of the basic mathematics unit of competency.

5A fabrication drawing specifies four equal-length pipe sections cut from a 5.6 m pipe, allowing 40 mm total for cutting losses. What is the length of each section, in millimetres?

A.1,400 mm

B.1,490 mm

C.1,360 mm

D.1,390 mm

Explanation: Convert 5.6 m to 5,600 mm, subtract the 40 mm total cutting loss to get 5,560 mm, then divide by 4 sections: 5,560 / 4 = 1,390 mm per section. Combining conversion, subtraction and division reflects real workplace calculation requirements.

6Which piece of personal protective equipment specifically protects a welder's eyes and face from the intense ultraviolet and infrared radiation produced by an electric arc?

A.Dust mask

B.Safety boots

C.Welding helmet with a filter lens

D.Ear plugs

Explanation: A welding helmet fitted with a shaded or auto-darkening filter lens blocks the harmful ultraviolet and infrared radiation given off by the arc, protecting the eyes and face. This is one of the core PPE items listed for arc welding work.

7What is the primary purpose of wearing leather gloves and a leather apron during arc welding?

A.To increase the welding current

B.To protect the skin from sparks, spatter and radiant heat

C.To improve grip on tools only

D.To reduce exposure to workshop noise

Explanation: Leather gloves and aprons resist heat and are not easily burned through by hot sparks and molten spatter, protecting the welder's skin during arc welding. Leather hand gloves and overalls/aprons are listed among the standard PPE for welding work.

8A welder notices sharp eye pain, redness and a gritty sensation in the eyes several hours after welding without adequate eye protection. What condition does this most likely describe?

A.Color blindness

B.Arc eye (flash burn)

C.Conjunctivitis from dust exposure

D.Permanent blindness

Explanation: Arc eye, also called flash burn or photokeratitis, is caused by ultraviolet radiation from the welding arc burning the surface of the cornea. It typically causes delayed, painful symptoms hours after unprotected exposure and is usually temporary if treated.

9Why must an oxygen cylinder never be stored or used near oil or grease?

A.Oil reduces the gas pressure inside the cylinder

B.Oil only affects the cylinder's paint finish

C.Oil and grease can react violently and ignite in contact with high-pressure oxygen

D.Oil has no safety-related effect on oxygen equipment

Explanation: Oil and grease can spontaneously combust or explode on contact with high-pressure oxygen because oxygen dramatically accelerates combustion. This is a fundamental gas-cylinder safety rule taught before any oxy-acetylene work.

10What is the correct immediate action if a flashback (flame burning back into the torch) occurs in an oxy-acetylene torch?

A.Increase the acetylene flow to blow the flame back out

B.Immediately shut off the torch valves, starting with the oxygen valve, then check the flashback arrestor

C.Continue working and monitor the torch temperature

D.Disconnect the hoses while the flame is still lit

Explanation: A flashback must be stopped immediately by closing the torch valves, and the equipment should then be checked (including the flashback arrestor) before resuming work. Continuing to operate or disconnecting a lit torch are unsafe responses.

About the BTEB Welding Exam Exam

The BTEB National Skill Certificate in Welding, NTVQF Level-I, certifies competence in basic arc and gas welding work in Bangladesh. The official units of competency cover basic mathematics, OSH, housekeeping, working in the Light Engineering Sector, interpreting technical drawings, hand and power tools, measuring instruments, oxy-acetylene cutting, gas welding and brazing, and Shielded Metal Arc Welding (SMAW) beads/padding and fillet (1F/2F) and groove (1G/2G) positions, alongside a hands-on practical assessment. This bank also covers general welding-process literacy on GMAW (MIG) and GTAW (TIG) and AWS electrode classification.

Assessment

Competency-Based Training & Assessment (CBT&A) under the NTVQF, combining knowledge checks (written and oral questioning) with a supervised practical demonstration for each unit of competency, administered by BTEB through affiliated technical institutes. The full NSC-I Welding curriculum totals 360 nominal training hours across generic, sector and occupation-specific units covering SMAW, gas welding/brazing and oxy-acetylene cutting.

Time Limit

Set by BTEB and the registered assessment centre for each unit of competency. Confirm exact timing with your institute.

Passing Score

NTVQF assessment is competency-based: candidates are graded "Competent" or "Not Yet Competent" against the published standard for each unit rather than a single percentage score. Confirm the exact assessment method with your assessment centre.

Exam Fee

Registration and assessment fees are set by BTEB and the enrolling institute and are government-subsidised but change periodically. Confirm the current amount with your institute. (Bangladesh Technical Education Board (BTEB))

BTEB Welding Exam Exam Content Outline

Basic Mathematics & Workplace Measurement

Area, volume, unit conversion, tolerance and percentage/ratio calculations for workplace jobs.

Occupational Safety and Health (OSH)

PPE, hazard identification, gas cylinder safety, flashback/backfire response and fit-to-work records.

Housekeeping and Workplace Organization

Sorting, arranging and maintaining the work area, minor tool repairs and keeping evacuation routes clear.

Working in the Light Engineering Sector

Job roles, interpersonal and teamwork skills, work planning and sector hazards.

Technical Drawing Interpretation

Drawing selection, dimensions, tolerances, welding symbols and material specifications.

Hand and Power Tools

Selecting and using hand and power tools, plus preventive maintenance.

Measuring Instruments

Length, angle and diameter measuring instruments and their care.

Oxy-Acetylene Cutting

Torch set-up, nozzle selection, flame types, backfire/flashback and cutting types.

Gas Welding and Brazing

Torch set-up, filler/flux selection, tack welding and gas-welding defects.

11%

SMAW Beads and Padding

Ampere setting, weaving, travel speed, electrode sizing and distortion control.

10%

SMAW Fillet Welding (1F/2F Positions)

Welding machines, electrode ovens, tacking/alignment and fillet-weld defects.

17%

SMAW Groove/Butt Welding (1G/2G Positions)

Edge preparation, key-hole root technique, electrodes, multi-pass welding and groove-weld defects.

Welding Processes and Electrodes

GMAW (MIG) and GTAW (TIG) basics versus SMAW, and AWS electrode classification.

How to Pass the BTEB Welding Exam Exam

What You Need to Know

Passing score: NTVQF assessment is competency-based: candidates are graded "Competent" or "Not Yet Competent" against the published standard for each unit rather than a single percentage score. Confirm the exact assessment method with your assessment centre.
Assessment: Competency-Based Training & Assessment (CBT&A) under the NTVQF, combining knowledge checks (written and oral questioning) with a supervised practical demonstration for each unit of competency, administered by BTEB through affiliated technical institutes. The full NSC-I Welding curriculum totals 360 nominal training hours across generic, sector and occupation-specific units covering SMAW, gas welding/brazing and oxy-acetylene cutting.
Time limit: Set by BTEB and the registered assessment centre for each unit of competency. Confirm exact timing with your institute.
Exam fee: Registration and assessment fees are set by BTEB and the enrolling institute and are government-subsidised but change periodically. Confirm the current amount with your institute.

Keys to Passing

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

BTEB Welding Exam Study Tips from Top Performers

1Learn the welding position codes (1F/2F for fillet welds, 1G/2G for groove/butt welds) cold, since exam questions frequently test which number and letter combination matches which position and joint type.

2Pair each theory topic with hands-on practice in the workshop, such as setting the correct ampere for a given electrode, cutting a bevel edge with oxy-acetylene, or running a SMAW bead with consistent travel speed, since BTEB's CBT&A model assesses practical competence alongside knowledge.

3Study the welding defects list (porosity, undercut, lack of fusion, lack of penetration, slag inclusion, overlap and arc crater) by cause and appearance, not just by name, since practical assessment requires identifying and rectifying defects, not just naming them.

Frequently Asked Questions

Who awards the BTEB Welding certificate and what does it cover?

The Bangladesh Technical Education Board (BTEB) awards the National Skill Certificate-I in Welding under the National Technical and Vocational Qualifications Framework (NTVQF), through affiliated technical and vocational institutes. It certifies competence across units covering basic maths, OSH, housekeeping, the Light Engineering Sector, technical drawing, tools, measuring instruments, oxy-acetylene cutting, gas welding/brazing and SMAW in beads/padding, fillet (1F/2F) and groove (1G/2G) positions, alongside a hands-on practical assessment.

Is the BTEB Welding assessment only multiple-choice?

No. BTEB uses Competency-Based Training & Assessment (CBT&A), which combines knowledge checks (written or oral questioning) with a supervised practical demonstration for each unit of competency. This free bank focuses on the underpinning trade-theory knowledge with 100 multiple-choice questions to help you revise.

How many questions are in this practice bank and what topics does it cover?

This free bank has 100 multiple-choice questions covering basic mathematics, OSH, housekeeping, the Light Engineering Sector, technical drawing, hand and power tools, measuring instruments, oxy-acetylene cutting, gas welding and brazing, SMAW beads/padding and fillet and groove welding positions, common welding defects, and general GMAW (MIG)/GTAW (TIG) and electrode-classification knowledge.

Does the BTEB Welding NSC-I cover MIG (GMAW) and TIG (GTAW) welding?

The official NSC-I (Level 1) competency standard focuses on SMAW (stick/arc welding), gas welding and brazing, and oxy-acetylene cutting; GMAW and GTAW are covered as separate NSDA National Certificates at higher NTVQF levels. This bank includes a general welding-process literacy section on GMAW/GTAW and electrode classification alongside the Level-1 SMAW and gas-welding content, since these are foundational concepts every welder should know.

What pass mark do I need for the BTEB Welding trade-theory exam?

NTVQF assessment is competency-based rather than percentage-graded: candidates are assessed as "Competent" or "Not Yet Competent" against the published standard for each unit. BTEB does not publish a single fixed percentage for this qualification, so confirm the exact assessment method with your enrolling institute or assessment centre.