100+ Free NVQ L4 Automobile Technician Practice Questions

Pass your Sri Lanka NVQ Level 4 Automobile Mechanic/Technician exam on the first try — instant access, no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately

Competency-based Pass Rate

100+ Questions

100% Free

Loading practice questions...

Same family resources

Explore More Sri Lanka NVQ Automotive Trades

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Sri Lanka NVQ Level 3 Motorcycle Mechanic Written Examination

Practice Questions100 questions

Sri Lanka NVQ Level 4 Automobile Air Conditioning Technician Written Examination

Practice Questions100 questions

2026 Statistics

Key Facts: NVQ L4 Automobile Technician Exam

Rs. 1,500

Exam Fee

TVEC / NAITA

Competent

Passing Standard

Competency-based

3 hours

Exam Duration

TVEC Syllabus

Total Exam Items

50 MCQ + 5 Structured

Level 4

NVQ Tier

National Framework

60-80 hrs

Study Time

Recommended

The Sri Lanka NVQ Level 4 Automobile Mechanic/Technician written exam (NCS G50S003) is administered by TVEC and NAITA. It evaluates candidates on 7 key core modules including Engine Systems, Fuel Systems, Chassis and Transmission, Steering, Suspension, Braking, Electrical systems, and Safety. The written paper includes 50 MCQs and 5 structured questions over 3 hours. Passing is competency-based, requiring candidates to demonstrate both theoretical and practical command of vehicle maintenance.

Sample NVQ L4 Automobile Technician Practice Questions

Try these sample questions to test your NVQ L4 Automobile Technician exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the first corrective action you must take if liquid engine coolant or battery acid splashes directly into your eyes in the workshop?

A.Flush your eyes immediately with clean water at the eyewash station for at least 15 minutes

B.Wipe your eyes with a clean shop rag to absorb the acidic chemicals

C.Apply engine oil or grease to neutralize the chemical reaction

D.Close your eyes and wait 5 minutes for the initial burning sensation to subside

Explanation: Safety standards require that if any chemical, acid, or engine fluid splashes in the eyes, they must be flushed immediately with clean, low-pressure running water at an eyewash station for at least 15 minutes. This dilutes and washes away the hazard, minimizing chemical burns. Medical attention should be sought immediately afterward.

2Which of the following is the most appropriate method for storing oily rags in an automotive workshop to prevent spontaneous combustion?

A.Store them in a closed, fire-resistant metal container designed for oily waste

B.Accumulate them in an open plastic rubbish bin next to the welding bay

C.Hang them up on a wooden tool board to dry in the sun

D.Throw them under a workbench near electrical outlets

Explanation: Oily rags can undergo oxidation, which generates heat. If stored in a poorly ventilated container, this heat builds up until it reaches the ignition temperature of the oil (spontaneous combustion). Storing them in a closed, approved fire-resistant metal waste container deprives the potential fire of oxygen and isolates it from the workshop environment.

3Which class of fire extinguisher is specifically rated and designed to extinguish fires involving burning gasoline, diesel, or engine oils?

A.Class A fire extinguisher

B.Class B fire extinguisher

C.Class D fire extinguisher

D.Water-only fire extinguisher

Explanation: Class B fires involve flammable and combustible liquids, such as gasoline, diesel, grease, paint, and engine oils. Extinguishing agents like carbon dioxide (CO2), dry chemical, or foam are used to smother the flames by cutting off the oxygen supply.

4When reading a standard metric vernier caliper with a main scale graduation of 1 mm and a vernier scale of 50 divisions, what is the maximum measurement resolution (accuracy) of the tool?

A.0.1 mm

B.0.05 mm

C.0.02 mm

D.0.01 mm

Explanation: The resolution of a vernier caliper is calculated by dividing the smallest division on the main scale by the total number of divisions on the vernier scale. For a metric caliper with 1 mm main scale divisions and a 50-division vernier scale: 1 mm / 50 = 0.02 mm.

5What is the primary function of the ratchet stop or friction thimble on an outside micrometer during measurement?

A.To lock the spindle in place once the measurement is complete

B.To apply a uniform, consistent pressure on the object being measured

C.To quickly advance the spindle toward the anvil over long distances

D.To calibrate the zero mark on the sleeve when using a standard gauge block

Explanation: The ratchet stop or friction thimble slips or clicks when a predetermined amount of force is applied. This ensures that the spindle applies the exact same pressure on the workpiece for every measurement, preventing operator bias and avoiding distorting the workpiece or tool frame.

6Which tool is most suitable for measuring crankshaft end play (axial clearance) or flywheel radial runout on an automotive engine?

A.Vernier caliper

B.Outside micrometer

C.Dial indicator with magnetic base

D.Telescoping gauge with micrometer

Explanation: A dial indicator measures small linear distances with high precision (typically 0.01 mm increments). When mounted on a stable magnetic base, it can measure the micro-movements of a crankshaft pushed forward and backward (end play) or the surface variations of a rotating flywheel (runout).

7How should a click-type torque wrench be stored after completing mechanical service work in the shop?

A.At its maximum torque setting to keep the internal spring compressed

B.At its lowest scale setting (zero or minimum tension) to relieve spring tension

C.Fully disassembled with the internal spring and plunger removed

D.In a bucket of solvent to clean off oil and grease deposits

Explanation: A click-type torque wrench uses a calibrated internal spring under tension to determine the click threshold. If stored under high tension, the spring will suffer from fatigue and permanent deformation over time, causing the wrench to lose calibration and under-torque fasteners. Restoring the scale to its lowest setting (but not past the minimum scale mark) preserves calibration.

8What chemical compound should be used to safely neutralize sulfuric acid that has spilled from a lead-acid vehicle battery?

A.Sodium bicarbonate (baking soda) dissolved in water

B.Concentrated hydrochloric acid

C.Petroleum-based solvent or brake cleaner

D.Distilled water only

Explanation: Sulfuric acid is a strong acid. Sodium bicarbonate (baking soda) is a mild base (alkaline compound) that reacts with the acid to neutralize it, forming harmless salts, water, and carbon dioxide gas. This neutralizes the corrosive properties of the spilled electrolyte safely.

9A technician is using a metric micrometer to measure a valve stem diameter. The sleeve shows a reading of 6.5 mm and the thimble scale aligns at the 14th division. What is the final measurement value?

A.6.14 mm

B.6.514 mm

C.6.64 mm

D.6.74 mm

Explanation: A standard metric micrometer sleeve has upper graduations of 1.0 mm and lower graduations of 0.5 mm. The thimble has 50 divisions, each representing 0.01 mm. The reading is calculated as: Main sleeve reading (6.5 mm) + Thimble reading (14 x 0.01 mm = 0.14 mm) = 6.64 mm.

10What is the correct procedure for using a dial indicator to check the runout of an automotive brake rotor?

A.Mount the magnetic base to a stationary suspension component, position the plunger tip perpendicular to the rotor face, preload the dial, zero the bezel, and rotate the rotor slowly

B.Clamp the magnetic base directly to the rotor, place the plunger against the brake caliper, and rotate the rotor

C.Hold the indicator body in your hand, press the plunger against the rotor surface, and have an assistant spin the wheel at high speed

D.Position the plunger parallel to the rotor braking surface and drag the tip across the rotor slot without preloading the indicator

Explanation: To measure runout, the dial indicator base must be mounted to a rigid, stationary reference point (like the steering knuckle or strut). The plunger tip must contact the rotor surface at a right angle (perpendicular) to ensure movement is fully transferred. Preloading the plunger ensures both positive and negative variations are registered, and slow manual rotation allows recording the minimum and maximum dial readings.

About the NVQ L4 Automobile Technician Exam

Written assessment for Level 4 Automobile Mechanic/Technician certification in Sri Lanka. Evaluates knowledge in workshop safety, engine mechanicals, fuel systems, drivetrains, chassis geometry, auto electricals, and hybrid fundamentals.

Questions

55 scored questions

Time Limit

3 hours

Passing Score

Competency-based (Requires 'Competent' grade in both theory and practical)

Exam Fee

Rs. 1,500 (TVEC / NAITA)

NVQ L4 Automobile Technician Exam Content Outline

10%

Safety and Tools

Workshop safety, fire categories, chemical hazards, and micrometer/vernier measuring tasks.

20%

Engine Systems

Four-stroke cycles, engine overhauling, valve clearance, lubrication, and cooling systems.

15%

Fuel Systems

MPFI, GDI, CRDI pressures, diesel pumps/injectors, water sedimenters, and EVAP canisters.

15%

Transmission and Chassis

Clutch diagnostics, gearboxes, gear ratio calculations, U-joints, and differential systems.

20%

Steering, Suspension & Braking

Caster/camber/toe, steering rack wear, leaf springs, master cylinder, ABS, and air brakes.

15%

Electrical and Electronic Systems

Alternator rectifier diodes, starter windings, battery hydrometer specific gravity, OBD-II DTCs, and CAN bus.

Hybrid and New Technology

Class 0 high-voltage safety gloves, service plug discharge times, and SRS airbag guidelines.

How to Pass the NVQ L4 Automobile Technician Exam

What You Need to Know

Passing score: Competency-based (Requires 'Competent' grade in both theory and practical)
Exam length: 55 questions
Time limit: 3 hours
Exam fee: Rs. 1,500

Keys to Passing

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

NVQ L4 Automobile Technician Study Tips from Top Performers

1Practice reading vernier calipers, micrometers, and dial indicators to ensure precision in cylinder bore and crankshaft measurements.

2Understand the stoichiometric ratio calculation and fuel delivery differences between MPFI and GDI systems.

3Study transmission gear ratios and universal joint phasing to handle mechanical power transfer diagnostics.

4Memorize standard wheel alignment angles (caster, camber, toe) and their impact on tire wear and steering pull.

5Master basic electrical circuit diagnostics, including Ohm's law, CAN bus resistance checks, and starter/alternator testing.

6Familiarize yourself with Class 0 high-voltage safety rules and service plug handling for hybrid vehicle maintenance.

Frequently Asked Questions

What is the format of the NVQ Level 4 Automobile Technician written exam?

The written examination consists of two parts: Part I contains 50 Multiple Choice Questions (MCQs) and Part II contains 5 Structured Essay Questions. The total time allocated for the paper is 3 hours. It tests the candidate's understanding of diagnostic theory, calculations, and mechanical troubleshooting procedures.

What does 'Competency-based' passing mean?

Unlike traditional academic exams that award grades (A, B, C), NVQ assessments are competency-based. Candidates are graded as either 'Competent' (C) or 'Not Yet Competent' (NYC). To receive the qualification, you must demonstrate competence in all core modules across both the written theory paper and the practical skill assessment.

Who administers the NVQ Level 4 exam in Sri Lanka?

The assessment is regulated by the Tertiary and Vocational Education Commission (TVEC) of Sri Lanka. The examinations and practical evaluations are conducted by authorized agencies such as the National Apprentice and Industrial Training Authority (NAITA) and the Department of Technical Education and Training (DTET).

How long should I study for the NVQ Level 4 written exam?

We recommend dedicating between 60 and 80 hours of study over 8 to 10 weeks. Your study should combine reviewing theoretical concepts (like gear ratios, electrical diagnostic methods, and sensor operations) with practical workshop measurements using precision instruments.

What are the eligibility criteria for the NVQ Level 4 exam?

Candidates can qualify through two main pathways: 1) Institutional pathway, by completing a registered course at a technical college or training center (like CGTTI or VTA), or 2) National Assessment/Recognized Prior Learning (RPL) pathway, by showing relevant industrial experience (typically 2-3 years) certified by an employer or NAITA assessment.

What is the exam fee for the NVQ Level 4 Automobile Technician certification?

The registration and written examination fee is typically Rs. 1,500 for institutional candidates. Private candidates applying via the Record of Prior Learning (RPL) or industrial training pathways through NAITA may have additional assessment fees depending on the practical evaluation center.