100+ Free EASA Module 3 Practice Questions
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Key Facts: EASA Module 3 Exam
52 questions
B1/B2 Exam Length
EASA Part-66 (2023/989)
65 minutes
B1/B2 Time Limit
EASA Part-66 (2023/989)
75%
Pass Mark
EASA Part-66 Appendix II
3 options
MCQ Format
EASA Part-66 exam standard
12 June 2024
2023/989 Syllabus Applicable
Commission Implementing Regulation (EU) 2023/989
3 attempts
Maximum Consecutive Attempts
EASA Part-66
400 Hz
Typical Aircraft AC Frequency
Module 3 AC Theory
EASA Part-66 Module 03 (Electrical Fundamentals) is a basic-knowledge module for the EASA aircraft maintenance licence, sat by trainee B1 (mechanical) and B2 (avionics) technicians. The B1/B2 exam is 52 three-option multiple-choice questions in 65 minutes with a 75% pass mark (Category A: 20 questions in 25 minutes); there is no essay in Module 3, as essays remain only in Module 7. Content spans electron theory and static electricity, DC sources, DC circuits (Ohm's law, Kirchhoff's laws, series/parallel), resistors and the resistor colour code, the Wheatstone bridge, power and energy, capacitance and RC time constants, magnetism and electromagnetism, inductance with Faraday's and Lenz's laws, DC motor/generator theory, and AC theory covering RMS values, RLC circuits, resonance, transformers, filters, and single/three-phase generators and motors. Aircraft AC is typically 400 Hz. The syllabus follows Commission Implementing Regulation (EU) 2023/989 (applicable 12 June 2024); candidates have a maximum of three consecutive attempts with a 90-day wait. This practice bank uses 4 options per question while the real exam uses 3.
Sample EASA Module 3 Practice Questions
Try these sample questions to test your EASA Module 3 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1In the Bohr model of the atom, which subatomic particle carries a negative charge and orbits the nucleus?
2A material whose outer (valence) shell contains exactly four electrons is best classified as a:
3According to the basic law of electrostatics, two bodies carrying like charges will:
4Coulomb's law states that the force between two point charges is:
5The unit of electric charge is the:
6Conventional current flow is defined as moving:
7Which term describes the force that drives current around a circuit, measured before any load is connected (i.e. the open-circuit terminal voltage of a source)?
8Conductance is the reciprocal of resistance and is measured in:
9Which method of electricity generation is used by a thermocouple?
10The generation of electricity by applying mechanical stress to a quartz crystal is known as the:
About the EASA Module 3 Exam
EASA Part-66 Module 03 - Electrical Fundamentals is one of the basic knowledge modules required for an EASA aircraft maintenance licence in categories B1 (mechanical) and B2 (avionics). It tests electron theory, DC circuit analysis with Ohm's and Kirchhoff's laws, resistors, capacitance, magnetism, inductance, and AC theory including transformers and machines. For B1 and B2 the module is examined by 52 multiple-choice questions in 65 minutes (Category A: 20 questions in 25 minutes). The current syllabus follows Commission Implementing Regulation (EU) 2023/989, applicable from 12 June 2024.
Questions
52 scored questions
Time Limit
65 minutes (B1/B2); Cat A: 20 questions in 25 minutes
Passing Score
75%
Exam Fee
Varies by NAA/Part-147 organisation (approx. EUR 50-230 per module sitting) (EASA framework - exams sat at National Aviation Authorities or approved Part-147 maintenance training organisations)
EASA Module 3 Exam Content Outline
Electron Theory, Static Electricity & Generation
Atomic structure and charge distribution, conductors/semiconductors/insulators, electrostatic attraction/repulsion and Coulomb's law, conduction in solids/liquids/gases, electrical terminology (EMF, potential difference, conventional vs electron flow, conductance), and methods of generating electricity (heat, light, pressure, friction, chemical, magnetism)
DC Sources of Electricity
Primary and secondary cells, lead-acid (sulphuric acid electrolyte, specific gravity) and nickel-cadmium batteries, cells connected in series and parallel, internal resistance and terminal voltage, thermocouples (Seebeck effect) and photovoltaic cells
DC Circuits - Ohm's & Kirchhoff's Laws
Ohm's law (V = IR) calculations, Kirchhoff's current law (junction) and voltage law (loop), series circuits (common current, voltage division) and parallel circuits (common voltage, current division), and combined-network analysis
Resistance, Resistors & Power
Resistor colour code and tolerance bands, resistivity (R = rho L/A) and temperature coefficient, thermistors (NTC/PTC) and potentiometers, the balanced Wheatstone bridge (R1/R2 = R3/R4), and power/energy (P = VI, I-squared-R, V-squared/R, W = Pt)
Capacitance & Capacitors
Capacitance C = Q/V, factors affecting capacitance (area, spacing, permittivity), capacitors in series and parallel, the RC time constant (tau = RC) and 5-tau charging, energy stored (half C V-squared), and working-voltage/dielectric-breakdown ratings
Magnetism, Inductance & DC Machines
Magnetic fields and flux, ferromagnetism, reluctance and hysteresis (remanence/coercivity), electromagnetism and the right-hand grip rule, Faraday's and Lenz's laws, self and mutual inductance, the LR time constant (tau = L/R), and DC motor/generator theory with back EMF, the commutator and Fleming's rules
AC Theory, Transformers, Filters & Machines
Sinusoidal peak/RMS (0.707)/average values, frequency and periodic time (400 Hz aircraft AC), R/L/C phase relationships and reactance, series RLC resonance (XL = XC), transformers (turns ratio, eddy-current and hysteresis losses), filters (low/high/band-pass/band-stop), and single- and three-phase AC generators and motors (star/delta, slip)
How to Pass the EASA Module 3 Exam
What You Need to Know
- Passing score: 75%
- Exam length: 52 questions
- Time limit: 65 minutes (B1/B2); Cat A: 20 questions in 25 minutes
- Exam fee: Varies by NAA/Part-147 organisation (approx. EUR 50-230 per module sitting)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
EASA Module 3 Study Tips from Top Performers
Frequently Asked Questions
How many questions are on EASA Part-66 Module 3 and what is the time limit?
For licence categories B1 and B2, Module 3 has 52 multiple-choice questions and a time limit of 65 minutes. Category A candidates sit 20 questions in 25 minutes. The pass mark is 75%.
What is the pass mark for EASA Module 3?
The pass mark is 75% for every Part-66 module, including Module 3. The real exam uses 3-option multiple-choice questions with roughly 75 seconds allowed per question.
Does Module 3 contain any essay questions?
No. Module 3 is entirely multiple-choice. Under the 2023/989 standard, essays remain only in Module 7 (two essays); essays were removed from Modules 9 and 10 in June 2024.
Which syllabus does this Module 3 practice test follow?
It follows Commission Implementing Regulation (EU) 2023/989, applicable from 12 June 2024. Pre-2024 courses must finish under the old standard by 12 June 2026, so new candidates should study to the 2023/989 syllabus.
What topics does Module 3 cover?
Electron theory and static electricity, DC sources, DC circuits (Ohm's law, Kirchhoff's laws, series/parallel), resistors and the colour code, the Wheatstone bridge, power, capacitance, magnetism and electromagnetism, inductance, DC machines, and AC theory including transformers, filters and AC generators/motors.
How many attempts do I get at an EASA Part-66 module exam?
Candidates are allowed a maximum of 3 consecutive attempts at a module, after which a 90-day waiting period applies before further attempts. Exam credit toward the licence is valid for 10 years.
Why does this practice bank use 4 options when the real exam uses 3?
The official EASA Part-66 exam uses 3-option multiple-choice questions. This free practice bank uses 4 options to give extra distractor practice on common mistakes and adjacent values; the underlying knowledge and calculations are identical.