100+ Free Cameroon CAP Vocational Trades Practice Questions

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2026 Statistics

Key Facts: Cameroon CAP Vocational Trades Exam

10.00 / 20

Minimum overall pass average

MINESEC / DECC Cameroon

2 components

Written papers plus workshop practical, both sat by every candidate since 2013

MINESEC / DECC examination format

4 years

CETIC / first-cycle technical training duration

MINESEC technical education structure

The Cameroon CAP is the national vocational trade certificate issued by MINESEC/DECC, requiring a weighted average score ≥ 10.00/20 across written trade theory, technical drawing, math, safety, and workshop practical execution.

Sample Cameroon CAP Vocational Trades Practice Questions

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

1According to Ohm's Law (U = R × I), what current flows through an electric heating element with a resistance of 46 Ω when connected to a standard single-phase 230 V supply?

A.5.0 A

B.0.2 A

C.10.6 A

D.10,580 A

Explanation: Applying Ohm's Law, current is calculated as I = U / R = 230 V / 46 Ω = 5.0 A. This fundamental linear relationship governs all purely resistive DC and AC electrical circuits.

2What is the primary safety function of a 30 mA high-sensitivity residual current device (Disjoncteur Différentiel à Haute Sensibilité — DDR 30 mA) in domestic and workshop electrical installations?

A.Protecting persons against electric shock from direct and indirect contact by cutting power when leakage current to earth reaches 30 mA

B.Protecting electrical appliances against high transient overvoltages caused by lightning strikes

C.Limiting the maximum continuous power consumption of the installation to prevent billing overruns

D.Extinguishing electrical arcs caused by high-current short circuits between phase and neutral conductors

Explanation: A 30 mA DDR detects imbalances between current flowing in the phase and returning through the neutral, disconnecting the circuit within milliseconds if a leakage current to earth (such as through a human body) reaches 30 mA. This provides essential life-safety protection against ventricular fibrillation from indirect or accidental direct contact.

3In a balanced three-phase AC distribution system with a phase-to-neutral voltage (V) of 230 V, what is the phase-to-phase line voltage (U)?

A.400 V

B.230 V

C.325 V

D.690 V

Explanation: In a standard star-connected three-phase system, the line-to-line voltage is related to the phase-to-neutral voltage by U = V × √3. For V = 230 V, U = 230 × 1.732 ≈ 400 V (historically designated 380 V).

4A single-phase AC motor draws a current of 10 A at 230 V with a power factor (cos φ) of 0.80. What is the active power (P) consumed by this motor?

A.1,840 W

B.2,300 W

C.1,380 W

D.2,875 W

Explanation: In a single-phase AC circuit, active power is calculated as P = U × I × cos φ = 230 V × 10 A × 0.80 = 1,840 W (or 1.84 kW).

5Under standard electrical installation regulations (such as NF C 15-100 and CEMAC harmonization standards), which color combination is strictly reserved for the Protective Earth (PE) conductor?

A.Green and yellow stripes (Vert-Jaune)

B.Solid light blue (Bleu clair)

C.Solid brown or black (Marron ou Noir)

D.Solid red or orange (Rouge ou Orange)

Explanation: The dual-color bi-color green and yellow combination is exclusively reserved for the protective earth conductor (conducteur de protection PE) and must never be used for live phase or neutral conductors.

6Two resistors with values R1 = 30 Ω and R2 = 60 Ω are connected in parallel. What is the equivalent total resistance (Req) of the circuit?

A.20 Ω

B.90 Ω

C.45 Ω

D.1,800 Ω

Explanation: For two resistors in parallel, the equivalent resistance is given by the product-over-sum formula: Req = (R1 × R2) / (R1 + R2) = (30 × 60) / (30 + 60) = 1,800 / 90 = 20 Ω. Note that Req is always smaller than the smallest branch resistance.

7In electrical distribution, what defines the TT Earthing System (Régime de neutre TT)?

A.The transformer neutral is directly connected to earth at the substation, and exposed conductive parts of the installation are connected to an independent local earth electrode

B.The transformer neutral is isolated from earth, and exposed conductive parts are connected to a communal neutral conductor

C.The transformer neutral and exposed conductive parts are connected to the same continuous metallic earth cable without local electrodes

D.The transformer neutral is connected to earth, and exposed conductive parts are directly bonded to the incoming neutral conductor

Explanation: In a TT system (first 'T' = Terre for transformer neutral earthed, second 'T' = Terre for consumer frames earthed to an independent local electrode), any phase-to-frame fault produces a small fault current limited by earth resistance, making residual current devices (DDR) mandatory for automatic disconnection.

8A single-phase 230 V sub-circuit delivers a current of 16 A over a copper cable length of 50 m (total loop length 100 m) using a conductor cross-section of 2.5 mm². Taking the resistivity of copper as ρ = 0.0175 Ω·mm²/m, what is the approximate voltage drop (ΔU) across the cable?

A.11.2 V (4.87%)

B.5.6 V (2.43%)

C.22.4 V (9.74%)

D.1.4 V (0.61%)

Explanation: For a single-phase circuit, the voltage drop accounts for both conductors (phase and neutral): ΔU = (2 × ρ × L × I) / S = (2 × 0.0175 × 50 × 16) / 2.5 = 28 / 2.5 = 11.2 V. As a percentage of 230 V, (11.2 / 230) × 100 ≈ 4.87%, which approaches the maximum permissible 5% limit for power circuits (3% for lighting).

9When wiring a lighting circuit controlled from three or more separate locations in a building, which standard electrical device is most economical and practical to install?

A.An impulse latching relay (télérupteur) operated by normally open momentary pushbuttons wired in parallel

B.A combination of four separate standard single-pole switches connected in series

C.Two standard single-pole switches connected with heavy-duty intermediate contactors

D.A thermal overload relay wired directly to a rotary selector switch

Explanation: A latching impulse relay (télérupteur) changes the state of its power contacts each time its coil receives an electrical pulse from any of the parallel-wired momentary pushbuttons (boutons-poussoirs). This allows unlimited control points using simple two-wire pushbutton connections instead of complex intermediate four-way switches (permutateurs).

10What are the two distinct internal tripping mechanisms inside a standard thermal-magnetic circuit breaker (disjoncteur magnéto-thermique)?

A.A bimetallic strip for slow overload protection and an electromagnetic coil for instantaneous short-circuit protection

B.A hydraulic damper for reverse voltage protection and a piezoelectric crystal for frequency surges

C.A fusible metal link for overload protection and an optical sensor for arc flash detection

D.A thermal thermocouple for ground faults and a centrifugal governor for overspeed protection

Explanation: The thermal component uses a bimetallic strip that bends under sustained moderate overcurrents to trip the breaker according to an inverse-time curve. The magnetic component uses an electromagnetic coil that instantly attracts an armature during massive short-circuit currents, disconnecting the fault in a fraction of a cycle.

About the Cameroon CAP Vocational Trades Exam

The Cameroon Certificat d'Aptitude Professionnelle (CAP) is the national first-cycle vocational qualification in Cameroon, certifying skilled craftsmen and technicians across industrial and service trades (including electrical installation, automotive mechanics, masonry and civil construction, carpentry and joinery, and metal fabrication). Administered by MINESEC through the DECC, the CAP combines trade theory, engineering sciences, drafting, and hands-on workshop mastery. This 100-question practice bank provides comprehensive coverage of key trade principles, formulas, circuit analysis, and safety protocols with detailed explanations.

Assessment

The examination comprises two components: a hands-on workshop practical examination (épreuve pratique d'atelier) and a set of written general-education and trade-technology papers (including Français, Mathématiques, trade technology and drafting/schematics). Since 2013 all candidates sit both components rather than only those who pass the written papers.

Time Limit

Practicals and written papers run in separate multi-day windows across May and June; in the 2026 CAP Industriel session the practicals ended on 23 May and the written papers ran 1–5 June. Per-paper durations are set in the session timetable and are not published centrally.

Passing Score

Weighted general average of at least 10.00/20 across all subjects

Exam Fee

Fixed annually by the MINESEC/DECC registration circular; the CAP fee schedule is not published on an accessible official page (Direction des Examens, des Concours et de la Certification (DECC) / MINESEC)

Cameroon CAP Vocational Trades Exam Content Outline

25%

Electrical Installation & Electrotechnics

Ohm's and Kirchhoff's laws, AC single-phase and three-phase circuits, electrical power and energy calculations, conductors, conduit wiring, circuit breakers, RCD protection, earthing systems (TT, TN, IT), lighting circuits, and electric motors.

25%

Mechanical & Automotive Technology

Four-stroke and two-stroke internal combustion engines, compression ratio, camshaft and valve timing, lubrication systems, cooling thermostats, hydraulic braking systems, clutches, manual gearboxes, differentials, and 12V charging systems.

20%

Building Construction, Masonry & Woodworking

Concrete and mortar batching mixes (350 kg/m³), water-cement ratio, concrete curing and formwork striking times, rebar reinforcement and cover, strip footings, masonry bond patterns, tropical hardwood species, timber moisture, and woodworking joints.

15%

Technical Drawing & Workshop Metrology

European First Angle orthographic projection, drawing scales, line types, section views, non-hatched components, ISO tolerance fit notation (H7/g6), limit dimensions, vernier caliper (0.02 mm), micrometer (0.01 mm), and dial gauges.

15%

Workplace Health, Safety, Environment & Labour Legislation

Personal protective equipment (PPE), 4-step electrical lockout/tagout procedure, fire classes and extinguisher selection, compressed gas cylinder handling, Cameroon Labour Code statutory hours (40h/week), employment contracts, and occupational health.

How to Pass the Cameroon CAP Vocational Trades Exam

What You Need to Know

Passing score: Weighted general average of at least 10.00/20 across all subjects
Assessment: The examination comprises two components: a hands-on workshop practical examination (épreuve pratique d'atelier) and a set of written general-education and trade-technology papers (including Français, Mathématiques, trade technology and drafting/schematics). Since 2013 all candidates sit both components rather than only those who pass the written papers.
Time limit: Practicals and written papers run in separate multi-day windows across May and June; in the 2026 CAP Industriel session the practicals ended on 23 May and the written papers ran 1–5 June. Per-paper durations are set in the session timetable and are not published centrally.
Exam fee: Fixed annually by the MINESEC/DECC registration circular; the CAP fee schedule is not published on an accessible official page

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Frequently Asked Questions

What is the Cameroon Certificat d'Aptitude Professionnelle (CAP)?

The CAP is Cameroon's national vocational qualification awarded upon completing the 4-year first cycle of technical secondary education (CETIC / Lycée Technique). It certifies practical proficiency and theoretical knowledge in specific trades such as Electrical Installation, Auto Mechanics, Building Construction, Carpentry, and Metal Fabrication.

Who organizes and administers the CAP in Cameroon?

The examination is organized and supervised nationally by the Direction des Examens, des Concours et de la Certification (DECC) under the Ministry of Secondary Education (Ministère des Enseignements Secondaires - MINESEC).

What is the passing standard for the Cameroon CAP?

Candidates must obtain an overall coefficient-weighted average score of at least 10.00 out of 20 (moyenne générale ≥ 10.00/20). The practical workshop test (épreuve pratique d'atelier) is a compulsory component that every candidate sits and that counts towards that weighted average — since 2013 it is no longer reserved for candidates who have already passed the written papers.

How does this English-language practice test support preparation for the French CAP?

This bank is an English-language multiple-choice study adaptation, not an official translation of CAP papers and not a simulation of the exam's format or language environment. The official CAP is sat in French and combines written papers with a hands-on workshop practical, which no set of MCQs can reproduce. What these questions do is drill the underlying trade science — circuit and power calculations, engine and transmission principles, concrete and timber calculations, drawing and metrology conventions, and safety and labour rules — so you revise the knowledge the real papers test. Practise the workshop skills themselves in your CETIC or lycée technique atelier, and revise the French technical vocabulary alongside this bank.