NCATT AET EXAM 2025
QUESTIONS AND ANSWERS
Direct current is defined as - ✔✔the flow of electrons in one direction throughout a
circuit with constant voltage and current
Faraday's Law - ✔✔current will flow in a circuit provided there is electrical difference
in potential and there is a path for it to flow
Loads slow current by - ✔✔applying resistance
Current flows from - ✔✔negative to positive
Atoms - ✔✔represent the smallest elements that exist in nature
Atoms are made up of - ✔✔protons, neutrons and electrons
Nucleaus - ✔✔center of the atom
Electrons travel - ✔✔at the speed of light
Protons - ✔✔positively charged subatomic particles
Protons contain - ✔✔a positive electrical potential
Protons positive charge - ✔✔affect the orbits of the electrons
Neutrons are - ✔✔neutral subatomic particles
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,Neutrons are not involved - ✔✔in the conduction of electricity
Electron's charge - ✔✔is negative
The speed of rotation combined with electrical potential - ✔✔keeps the electrons in their
orbits
The attraction of opposite charges - ✔✔holds the electron in its orbit
Conductors - ✔✔easily permit the movement of electrons from an electrical source to a
load and back to the electrical source with a minimum of resistance
First two inner orbits - ✔✔make up the atomic number for the element
During conductance an extra valence electron - ✔✔flows into the next atoms valance
orbit
Good conductors - ✔✔Only those elements that dont hang on to their valence electrons
Good Insulators - ✔✔Elements that don't give up valance electrons no matter what
force is applied
lators - ✔✔a material or device used to prevent the passage of heat, electricity or sound
from one medium to another
Examples of insulators - ✔✔Glass, Mica, Silica
Air - ✔✔can be a good insulator but will spark when enough electrical force is applied
Static Electricity - ✔✔an electrical charge that may be built up on a non-conductive
surface by friction
Static electricity serves - ✔✔no useful purpose in aviation and cost millions of dollars in
damage every year
Voltage - ✔✔electric potential energy per unit charge measured in joules per coulomb
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
,Coulomb - ✔✔basic unit of electrical quantiy
Coluomb is equal to - ✔✔6.28 billion-billion electrons
Coluomb is the - ✔✔actual count of electrons in a unit of measure
Joule - ✔✔amount of electrons in a suspended state as compared to some electrons in an
adjacent part of the circuit
Electromotive Force - ✔✔is the force required to move an electron measured in volts
EMF - ✔✔is the force required to cause one amp of the current of flow through one ohm
of reistance
Mechanical, Chemical, Friction - ✔✔three methods used to generate EMF
Volt - ✔✔basic unit of measure of electrical pressure
A Volt is that amount of force - ✔✔required to cause on amp of current to flow through
one ohm of resistance
E is the symbol for - ✔✔volts
Current is - ✔✔the flow of electricity that pass a given point in a specific amount of time
I is the symbol for - ✔✔amps
Amps - ✔✔unit of measure used to express the flow of electrons
Current flows - ✔✔from a negative electrical potential to a positive one
Resistance is - ✔✔electrical opposition to the current flow in a conductor
Resistance does what - ✔✔opposed or slows down another force, drops, voltage and
consumes power
First rule of resistance - ✔✔current will take the path of less resistance
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, Zig zag line - ✔✔symbol of a resistor in an electrical schematic
Resistance is measured - ✔✔in Ohms and uses the omega symbol
One ohm - ✔✔limits the flow of current to one amp under a voltage pressure of one volt
Ohms law states - ✔✔the amount of current flowing in a circuit is directly proportional
to the circuit voltage and inversely proportional to the circuit resistance
Ohm's Law - ✔✔I= V/R, Current is equal to Voltage divided by resistance
Watt - ✔✔a basic unit of electrical power that is the product of voltage multiplied by
current
One Watt equals - ✔✔1/746 horsepower
One watt is produced when - ✔✔a circut that has one amp of current flowing under a
pressure of one volt
First rule of series circuits - ✔✔there is only one path for current to flow therefore
current equal throughout the circuit
Second rule of series circuits - ✔✔the voltage drop at each resistor will be the sum of
total applied voltage
Parallel circuits - ✔✔are those that offer several paths for current flow
Current is divided in a parallel circuit - ✔✔evenly between the branches
In a parallel circuit the total current load - ✔✔is the sum of the currents in the banches
In a parallel circuit, voltage is - ✔✔common through each of the branches
In series parallel cicuits, - ✔✔each section needs to be worked to its simplest elements
then reworked to fill in the unknowns
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
QUESTIONS AND ANSWERS
Direct current is defined as - ✔✔the flow of electrons in one direction throughout a
circuit with constant voltage and current
Faraday's Law - ✔✔current will flow in a circuit provided there is electrical difference
in potential and there is a path for it to flow
Loads slow current by - ✔✔applying resistance
Current flows from - ✔✔negative to positive
Atoms - ✔✔represent the smallest elements that exist in nature
Atoms are made up of - ✔✔protons, neutrons and electrons
Nucleaus - ✔✔center of the atom
Electrons travel - ✔✔at the speed of light
Protons - ✔✔positively charged subatomic particles
Protons contain - ✔✔a positive electrical potential
Protons positive charge - ✔✔affect the orbits of the electrons
Neutrons are - ✔✔neutral subatomic particles
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,Neutrons are not involved - ✔✔in the conduction of electricity
Electron's charge - ✔✔is negative
The speed of rotation combined with electrical potential - ✔✔keeps the electrons in their
orbits
The attraction of opposite charges - ✔✔holds the electron in its orbit
Conductors - ✔✔easily permit the movement of electrons from an electrical source to a
load and back to the electrical source with a minimum of resistance
First two inner orbits - ✔✔make up the atomic number for the element
During conductance an extra valence electron - ✔✔flows into the next atoms valance
orbit
Good conductors - ✔✔Only those elements that dont hang on to their valence electrons
Good Insulators - ✔✔Elements that don't give up valance electrons no matter what
force is applied
lators - ✔✔a material or device used to prevent the passage of heat, electricity or sound
from one medium to another
Examples of insulators - ✔✔Glass, Mica, Silica
Air - ✔✔can be a good insulator but will spark when enough electrical force is applied
Static Electricity - ✔✔an electrical charge that may be built up on a non-conductive
surface by friction
Static electricity serves - ✔✔no useful purpose in aviation and cost millions of dollars in
damage every year
Voltage - ✔✔electric potential energy per unit charge measured in joules per coulomb
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
,Coulomb - ✔✔basic unit of electrical quantiy
Coluomb is equal to - ✔✔6.28 billion-billion electrons
Coluomb is the - ✔✔actual count of electrons in a unit of measure
Joule - ✔✔amount of electrons in a suspended state as compared to some electrons in an
adjacent part of the circuit
Electromotive Force - ✔✔is the force required to move an electron measured in volts
EMF - ✔✔is the force required to cause one amp of the current of flow through one ohm
of reistance
Mechanical, Chemical, Friction - ✔✔three methods used to generate EMF
Volt - ✔✔basic unit of measure of electrical pressure
A Volt is that amount of force - ✔✔required to cause on amp of current to flow through
one ohm of resistance
E is the symbol for - ✔✔volts
Current is - ✔✔the flow of electricity that pass a given point in a specific amount of time
I is the symbol for - ✔✔amps
Amps - ✔✔unit of measure used to express the flow of electrons
Current flows - ✔✔from a negative electrical potential to a positive one
Resistance is - ✔✔electrical opposition to the current flow in a conductor
Resistance does what - ✔✔opposed or slows down another force, drops, voltage and
consumes power
First rule of resistance - ✔✔current will take the path of less resistance
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, Zig zag line - ✔✔symbol of a resistor in an electrical schematic
Resistance is measured - ✔✔in Ohms and uses the omega symbol
One ohm - ✔✔limits the flow of current to one amp under a voltage pressure of one volt
Ohms law states - ✔✔the amount of current flowing in a circuit is directly proportional
to the circuit voltage and inversely proportional to the circuit resistance
Ohm's Law - ✔✔I= V/R, Current is equal to Voltage divided by resistance
Watt - ✔✔a basic unit of electrical power that is the product of voltage multiplied by
current
One Watt equals - ✔✔1/746 horsepower
One watt is produced when - ✔✔a circut that has one amp of current flowing under a
pressure of one volt
First rule of series circuits - ✔✔there is only one path for current to flow therefore
current equal throughout the circuit
Second rule of series circuits - ✔✔the voltage drop at each resistor will be the sum of
total applied voltage
Parallel circuits - ✔✔are those that offer several paths for current flow
Current is divided in a parallel circuit - ✔✔evenly between the branches
In a parallel circuit the total current load - ✔✔is the sum of the currents in the banches
In a parallel circuit, voltage is - ✔✔common through each of the branches
In series parallel cicuits, - ✔✔each section needs to be worked to its simplest elements
then reworked to fill in the unknowns
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
