100+ Free Auto Electricals Practice Questions

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2026 Statistics

Key Facts: Auto Electricals Exam

100

MCQ Questions

CTVET Exam Structure

2 hours

Time Limit

CTVET Exam Guidelines

40%

Passing Score (D8)

CTVET Grading Scale

Annual

Exam Frequency

CTVET Calendar

Practical

Skills Test Included

CTVET Syllabus

The CTVET Ghana Certificate II Auto Electricals exam consists of a theory paper with 100 multiple-choice questions (2-hour limit) and a practical assessment. Designed for aspiring auto electricians in Ghana, it covers electrical fundamentals, battery testing, alternator charging, starter motor operations, vehicle wiring, and workshop safety. The credential requires a minimum passing grade of D8 (40%).

Sample Auto Electricals Practice Questions

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

1Which of the following formulas correctly represents Ohm's Law?

A.V = I / R

B.V = I * R

C.I = V * R

D.R = I / V

Explanation: Ohm's Law states that Voltage (V) equals Current (I) multiplied by Resistance (R). This is the fundamental equation for direct current electrical circuits in automotive training.

2To measure electrical current in an automotive circuit, how should an ammeter be connected?

A.In series with the load

B.In parallel with the battery

C.Across the switch contacts

D.Directly to the engine chassis ground

Explanation: An ammeter must be connected in series with the load so that all the current in the circuit flows through it. Connecting an ammeter in parallel would cause a short circuit and blow the meter fuse.

3When measuring voltage drop across a headlight switch, the voltmeter should be connected:

A.In series between the switch and the bulb

B.In parallel across the switch terminals while the switch is closed

C.Between the switch input terminal and chassis ground

D.Directly across the battery terminals

Explanation: A voltage drop test measures the voltage lost across a component or connection. The voltmeter must be connected in parallel across the switch terminals with the circuit powered and operating (switch closed).

4A 12V automotive circuit has a current flow of 3 Amperes. What is the total resistance of this circuit?

A.36 Ohms

B.0.25 Ohms

C.4 Ohms

D.15 Ohms

Explanation: Using Ohm's Law (R = V / I), we divide 12 Volts by 3 Amperes, which gives a resistance of 4 Ohms. This is standard circuit analysis technique.

5In the standard electrical formula V = I * R, what physical quantity does the letter 'I' represent?

A.Resistance in Ohms

B.Voltage in Volts

C.Current in Amperes

D.Power in Watts

Explanation: The letter 'I' stands for Intensity of current, which is measured in Amperes. It represents the flow of electric charge through the conductor.

6If two 4-Ohm resistors are connected in series, what is their total combined resistance?

A.2 Ohms

B.8 Ohms

C.16 Ohms

D.4 Ohms

Explanation: In a series circuit, resistances are added together directly (R_total = R1 + R2). Therefore, 4 Ohms + 4 Ohms = 8 Ohms.

7What is the total resistance of two 6-Ohm resistors connected in parallel?

A.12 Ohms

B.3 Ohms

C.1 Ohm

D.36 Ohms

Explanation: For parallel circuits with identical resistors, the total resistance is the value of one resistor divided by the number of resistors (6 / 2 = 3 Ohms). Alternatively, using the formula (R1 * R2) / (R1 + R2) yields (6*6)/(6+6) = 36/12 = 3 Ohms.

8What is the basic unit of electrical power in automotive systems?

A.Volt

B.Ampere

C.Ohm

D.Watt

Explanation: Electrical power represents the rate of doing work and is measured in Watts (W). In automotive systems, power is the product of voltage and current (P = V * I).

9Which of the following substances acts as a good conductor of electricity in vehicles?

A.Rubber

B.Plastic

C.Copper

D.Glass

Explanation: Copper has a high concentration of free electrons, making it an excellent electrical conductor. It is the primary material used for automotive wiring.

10How does increasing the length of an automotive electrical wire affect its electrical resistance?

A.It decreases resistance

B.It increases resistance

C.Resistance remains unchanged

D.Resistance drops to zero

Explanation: The resistance of a conductor is directly proportional to its length. As a wire gets longer, electrons encounter more atoms to collide with, increasing the total resistance.

About the Auto Electricals Exam

The CTVET Ghana Certificate II in Auto Electricals is a national trade certification designed to assess and validate the competency of automotive electricians. The exam evaluates foundational knowledge in workshop safety, electrical fundamentals, battery maintenance, starting systems, charging systems, lighting/auxiliary circuits, ignition systems, and basic automotive electronics. This trade qualification is essential for practicing as an automotive electrician in Ghana.

Assessment

100 multiple-choice questions (theory portion)

Time Limit

2 hours

Passing Score

40% (Grade D8)

Exam Fee

GHS 300 - 500 (Commission for Technical and Vocational Education and Training (CTVET), Ghana)

Auto Electricals Exam Content Outline

15%

Electrical Fundamentals

Ohm's Law, direct current circuits, series and parallel circuits, wire gauges, and using digital multimeters (DMM) to measure current, voltage, and resistance.

15%

Battery Systems

Lead-acid battery construction, chemical principles of operation, electrolyte specific gravity testing using a hydrometer, charging procedures, and battery workshop safety.

15%

Starting Systems

Starter motor operation (armatures, field coils, commutators), solenoid pull-in and hold-in windings, starter drive gears (overrunning clutches), and starter circuit troubleshooting.

15%

Charging Systems

Alternator operating principles, rotor and stator functions, diode rectifiers (converting AC to DC), voltage regulators, and charging path voltage drop tests.

15%

Ignition Systems

Conventional contact-breaker point distributors, electronic ignitions (magnetic pickup and Hall-effect sensors), coil-on-plug systems, ignition timing advance, and spark plugs.

15%

Lighting and Auxiliary Systems

Headlights, relays, fuses, turn signals, hazard lights, windshield wipers, horn circuits, and chassis ground systems.

10%

Electronics and Diagnostics

ECU principles, thermistor/induction sensors, actuators, scan tool operation, OBD-II DLC layout, and oscilloscope usage.

How to Pass the Auto Electricals Exam

What You Need to Know

Passing score: 40% (Grade D8)
Assessment: 100 multiple-choice questions (theory portion)
Time limit: 2 hours
Exam fee: GHS 300 - 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

Auto Electricals Study Tips from Top Performers

1Memorize Ohm's Law and practice solving calculations for voltage, current, and resistance.

2Understand the difference between series and parallel circuits and how voltage and current behave in each.

3Learn how to use a digital multimeter (DMM) to test continuity, voltage drop, and amperage drop.

4Study battery chemistry and safety, including specific gravity readings and the proper way to dilute sulfuric acid.

5Understand starting system circuitry, focusing on the differences in operation between the pull-in and hold-in solenoid windings.

6Study alternator internal components, particularly how diodes rectify three-phase alternating current into direct current.

7Be ready to explain ignition timing advance and how centrifugal and vacuum advance systems function.

8Practice drawing standard automotive wiring schematics for headlights, horn relays, and turn signals.

Frequently Asked Questions

What is the CTVET Ghana Certificate II in Auto Electricals?

The Certificate II in Auto Electricals is a national qualification administered by CTVET (Commission for Technical and Vocational Education and Training) in Ghana. It certifies that a technician possesses the standard competencies required to diagnose, maintain, and repair electrical systems in modern motor vehicles.

What is the structure of the exam?

The examination is divided into two parts: a theory paper consisting of 100 multiple-choice questions and structured questions, and a practical trade test where candidates must perform real-world diagnosis and wiring tasks (such as wiring a lighting circuit or testing an alternator) in front of an examiner.

What is the passing score for the Certificate II exam?

Following the grading system alignment, a candidate must achieve at least 40% (Grade D8) on the theory portion and successfully pass the practical component. Anything below 40% is graded as F9 (Fail).

How much does the exam cost to register?

The exam registration fee is established annually by CTVET and typically ranges from GHS 300 to GHS 500 depending on the school registration and practical materials fee. Candidates should check the latest circular from their training center.

What happens if a candidate fails the exam?

Candidates who do not pass can register to retake the failed components during the next examination window, which is held annually or semi-annually by CTVET.