EASA Part-66 Exam Practice Questions

Module 03 - Electrical Fundamentals

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SubsectionFree Trial Membership QuestionsPremium Membership Questions
03.01 - Electron TheoryStructure and distribution of electrical charges within: atoms, molecules, ions, compounds; Molecular structure of conductors, semiconductors and insulators.3330035151510051
03.02 - Static Electricity and ConductionStatic electricity and distribution of electrostatic charges; Electrostatic laws of attraction and repulsion; Units of charge, Coulomb’s Law; Conduction of electricity in solids, liquids, gases and a vacuum.46400692590025
03.03 - Electrical TerminologyThe following terms, their units and factors affecting them: potential difference, electromotive force, voltage, current, resistance, conductance, charge, conventional current flow, electron flow.2420044065400065
03.04 - Generation of ElectricityProduction of electricity by the following methods: light, heat, friction, pressure, chemical action, magnetism and motion.3330031616160016
03.05 - DC Sources of ElectricityConstruction and basic chemical action of: primary cells, secondary cells, lead acid cells, nickel cadmium cells, other alkaline cells; Cells connected in series and parallel; Internal resistance and its effect on a battery; Construction, materials and operation of thermocouples; Operation of photo-cells.5880082378780078
03.06 - DC CircuitsOhms Law, Kirchoff’s Voltage and Current Laws; Calculations using the above laws to find resistance, voltage and current; Significance of the internal resistance of a supply.01150011075330075
03.07a - Resistance/ResistorResistance and affecting factors; Specific resistance; Resistor colour code, values and tolerances, preferred values, wattage ratings; Resistors in series and parallel; Calculation of total resistance using series, parallel and series parallel combinations; Operation and use of potentiometers and rheostats; Operation of Wheatstone Bridge;073007060280060
03.07b - Resistance/ResistorPositive and negative temperature coefficient conductance; Fixed resistors, stability, tolerance and limitations, methods of construction; Variable resistors, thermistors, voltage dependent resistors; Construction of potentiometers and rheostats; Construction of Wheatstone Bridge.003000030
03.08 - PowerPower, work and energy (kinetic and potential); Dissipation of power by a resistor; Power formula; Calculations involving power, work and energy.03000303050030
03.09 - Capacitance/capacitorOperation and function of a capacitor; Factors affecting capacitance area of plates, distance between plates, number of plates, dielectric and dielectric constant, working voltage, voltage rating; Capacitor types, construction and function; Capacitor colour coding; Calculations of capacitance and voltage in series and parallel circuits; Exponential charge and discharge of a capacitor, time constants; Testing of capacitors. 052005180361180
03.10a - MagnetismTheory of magnetism; Properties of a magnet; Action of a magnet suspended in the Earth’s magnetic field; Magnetisation and demagnetisation; Magnetic shielding; Various types of magnetic material; Electromagnets construction and principles of operation; Hand clasp rules to determine: magnetic field around current carrying conductor;053005035260035
03.10b - MagnetismMagnetomotive force, field strength, magnetic flux density, permeability, hysteresis loop, retentivity, coercive force reluctance, saturation point, eddy currents; Precautions for care and storage of magnets.031003042190042
03.11 - Inductance/inductorFaraday’s Law; Action of inducing a voltage in a conductor moving in a magnetic field; Induction principles; Effects of the following on the magnitude of an induced voltage: magnetic field strength, rate of change of flux, number of conductor turns; Mutual induction; The effect the rate of change of primary current and mutual inductance has on induced voltage; Factors affecting mutual inductance: number of turns in coil, physical size of coil, permeability of coil, position of coils with respect to each other; Lenz’s Law and polarity determining rules; Back emf, self induction; Saturation point; Principle uses of inductors.062006031180031
03.12 - DC Motor/Generator TheoryBasic motor and generator theory; Construction and purpose of components in DC generator; Operation of, and factors affecting output and direction of current flow in DC generators; Operation of, and factors affecting output power, torque, speed and direction of rotation of DC motors; Series wound, shunt wound and compound motors; Starter Generator construction.0103001001524900152
03.13 - AC TheorySinusoidal waveform: phase, period, frequency, cycle; Instantaneous, average, root mean square, peak, peak to peak current values and calculations of these values, in relation to voltage, current and power; Triangular/Square waves; Single/3 phase principles.3630062369230069
03.14 - Resistive (R), Capacitive (C) and Inductive (L) CircuitsPhase relationship of voltage and current in L, C and R circuits, parallel, series and series parallel; Power dissipation in L, C and R circuits; Impedance, phase angle, power factor and current calculations; True power, apparent power and reactive power calculations.01030010169301169
03.15 - TransformersTransformer construction principles and operation; Transformer losses and methods for overcoming them; Transformer action under load and no-load conditions; Power transfer, efficiency, polarity markings; Calculation of line and phase voltages and currents; Calculation of power in a three phase system; Primary and Secondary current, voltage, turns ratio, power, efficiency; Auto transformers.052005076320076
03.16 - FiltersOperation, application and uses of the following filters: low pass, high pass, band pass, band stop.02000201600016
03.17 - AC GeneratorsRotation of loop in a magnetic field and waveform produced; Operation and construction of revolving armature and revolving field type AC generators; Single phase, two phase and three phase alternators; Three phase star and delta connections advantages and uses; Permanent Magnet Generators.07200701003900100
03.18 - AC MotorsConstruction, principles of operation and characteristics of: AC synchronous and induction motors both single and polyphase; Methods of speed control and direction of rotation; Methods of producing a rotating field: capacitor, inductor, shaded or split pole.062006150301150
03.19 - New questionsThese questions have been reported recently. They are new questions to the database. The wording of the questions may not be exactly as they appeared on the real exam. They are currently being researched. If you have any knowledge of the subject, or know of any direct source of information, we would welcome your feedback.00
Total Questions:1101150