NCATT AET PRACTICE EXAM | QUESTIONS AND ANSWERS |
VERIFIED ANSWERS | LATEST EXAM
Ampere ( A, amp, amperage) - CORRECT ANSWER - • Unit of measurement
used to express the flow of electrons (electrical current)
• One ampere is a rate of flow of one coulomb (6.28 billion - billion electrons)
passing a given point in an electrical circuit per second
• In mathematical problems amperage is expressed by the letter "I"
Battery - CORRECT ANSWER - • A device consisting of a number of primary
voltaic cells (cells that cannot be recharged) or secondary cells (cells that can be
recharged) connected in series to obtain a desired DC voltage
• A battery stores chemical energy and converts the energy into electrical form
• Aircraft storage batteries are generally rated at 12 or 24 volts
Capacitor - CORRECT ANSWER - • Electrical device used to store charge
and energy in the form of an electrostatic field
• A capacitor is a device made of two parallel conductors separated by an
insulator
Conductor - CORRECT ANSWER - • Common building block of electrical
circuits that easily permits the movement of electrons from an electrical source
to a load and back to the electrical source with a minimum of resistance.
• A conductor's resistance depends on such factors as cross sectional area,
length, temperature, and conductor material.
Coulomb - CORRECT ANSWER - • Basic unit of electrical quantity.
• A coulomb is equal to 6.28 billion - billion electrons (6.28 x 10 to the 18th)
,Current - CORRECT ANSWER - • The flow of electrons through a conductor
is known as current flow.
• The rate of current flow is measured in amperes.
Direct Current (DC) - CORRECT ANSWER - • A flow of electrons in one
direction throughout an electric circuit with constant voltage and current.
• Direct current is caused by a constant difference of potential, both negative
and positive.
Electron - CORRECT ANSWER - • Negatively charged subatomic particles
that are located and travel around (orbit) the nucleus in an imaginary sphere or
shell at the speed of light (186,000 miles/second)
• Electrons are involved in the conduction of electricity.
EMF (electromotive force) - CORRECT ANSWER - • The force that causes
electrons to flow through a conductor.
• This force is abbreviated e.m.f.
• The unit of measurement for eletromotive force is the volt.
• In mathematical problems voltage is expressed by the letter "E".
Farad - CORRECT ANSWER - • Basic unit of capacitance
• One farad holds one coulomb under a pressure of one volt.
Henry (H) - CORRECT ANSWER - • Basic unit of measurement for
inductance of an electrical coil
• One (1) henry is the inductance of a coil when a change of current of one (1)
ampere per second induces an e.m.f. of one (1) volt
• In mathematical problems inductance is expressed by the symbol "L".
,Inductor - CORRECT ANSWER - • Coil or other device used to introduce
inductance into a circuit.
• An inductor is a winding, or coiling, of multiple turns of wire
Insulator - CORRECT ANSWER - • Material or device used to prevent the
passage of heat, electricity, or sound from one medium to another.
Left hand rule - CORRECT ANSWER - • Refers to electrical
• This rule is for determining the direction of movement of a current - carrying
conductor in a magnetic field
Magnetic Permeability - CORRECT ANSWER - • Measure of ease that lines
of flux travel through a material
Magnetism - CORRECT ANSWER - • Ability of a magnet to attract certain
materials containing iron and to influence electrons
• Magnetism is the principle way to effectively produce AC electricity
Metric Prefixes - CORRECT ANSWER - • Measurements relating or using the
metric system of measurement
Neutron - CORRECT ANSWER - • Neutral subatomic particles that exist
within the nucleus of all atoms
• Neutrons are not involved in the conduction of electricity
Ohm - CORRECT ANSWER - • Unit of electrical opposition to the flow of
current
• A circuit has one ohm of resistance when it limits the flow of current to one
amp under a voltage pressure of one volt
, Ohm's Law - CORRECT ANSWER - • Ohm's Law states "the amount of
current flowing in a circuit is directly proportional to the circuit voltage and
inversely proportional to the circuit resistance"
• A plain language statement for Ohm's Law is; One volt causes one ampere to
flow through a resistance of one ohm.
Proton - CORRECT ANSWER - • Positively charged subatomic particles that
exist within the nucleus of all atoms
• Protons are not involved in the conduction of electricity
Resistance (R) - CORRECT ANSWER - • Electrical characteristic of a
conductor
• Opposition that a circuit, component, or substance presents to flow of
electricity
• Resistance is the force that opposes or slows down another force, drops
voltage, and consumes power
• Resistance is measured in ohms
• In mathematical problems ohms of resistance is expressed by symbol "R"
Scientific Notation - CORRECT ANSWER - • Short way of expressing a
given number between 1 and 10 multiplied by 10 to the appropriate power
Static Electricity - CORRECT ANSWER - • Electrical charge that may be
built up on a non-conductive surface by friction
• Static electricity serves no useful purpose
Volt (V) - CORRECT ANSWER - • Basic unit of electrical pressure
• A volt is the amount of force required to cause one amp of current to flow
through one ohm or resistance
• Volt is often expressed by such terms as voltage, voltage drop, potential
difference, EMF, or IR drop
VERIFIED ANSWERS | LATEST EXAM
Ampere ( A, amp, amperage) - CORRECT ANSWER - • Unit of measurement
used to express the flow of electrons (electrical current)
• One ampere is a rate of flow of one coulomb (6.28 billion - billion electrons)
passing a given point in an electrical circuit per second
• In mathematical problems amperage is expressed by the letter "I"
Battery - CORRECT ANSWER - • A device consisting of a number of primary
voltaic cells (cells that cannot be recharged) or secondary cells (cells that can be
recharged) connected in series to obtain a desired DC voltage
• A battery stores chemical energy and converts the energy into electrical form
• Aircraft storage batteries are generally rated at 12 or 24 volts
Capacitor - CORRECT ANSWER - • Electrical device used to store charge
and energy in the form of an electrostatic field
• A capacitor is a device made of two parallel conductors separated by an
insulator
Conductor - CORRECT ANSWER - • Common building block of electrical
circuits that easily permits the movement of electrons from an electrical source
to a load and back to the electrical source with a minimum of resistance.
• A conductor's resistance depends on such factors as cross sectional area,
length, temperature, and conductor material.
Coulomb - CORRECT ANSWER - • Basic unit of electrical quantity.
• A coulomb is equal to 6.28 billion - billion electrons (6.28 x 10 to the 18th)
,Current - CORRECT ANSWER - • The flow of electrons through a conductor
is known as current flow.
• The rate of current flow is measured in amperes.
Direct Current (DC) - CORRECT ANSWER - • A flow of electrons in one
direction throughout an electric circuit with constant voltage and current.
• Direct current is caused by a constant difference of potential, both negative
and positive.
Electron - CORRECT ANSWER - • Negatively charged subatomic particles
that are located and travel around (orbit) the nucleus in an imaginary sphere or
shell at the speed of light (186,000 miles/second)
• Electrons are involved in the conduction of electricity.
EMF (electromotive force) - CORRECT ANSWER - • The force that causes
electrons to flow through a conductor.
• This force is abbreviated e.m.f.
• The unit of measurement for eletromotive force is the volt.
• In mathematical problems voltage is expressed by the letter "E".
Farad - CORRECT ANSWER - • Basic unit of capacitance
• One farad holds one coulomb under a pressure of one volt.
Henry (H) - CORRECT ANSWER - • Basic unit of measurement for
inductance of an electrical coil
• One (1) henry is the inductance of a coil when a change of current of one (1)
ampere per second induces an e.m.f. of one (1) volt
• In mathematical problems inductance is expressed by the symbol "L".
,Inductor - CORRECT ANSWER - • Coil or other device used to introduce
inductance into a circuit.
• An inductor is a winding, or coiling, of multiple turns of wire
Insulator - CORRECT ANSWER - • Material or device used to prevent the
passage of heat, electricity, or sound from one medium to another.
Left hand rule - CORRECT ANSWER - • Refers to electrical
• This rule is for determining the direction of movement of a current - carrying
conductor in a magnetic field
Magnetic Permeability - CORRECT ANSWER - • Measure of ease that lines
of flux travel through a material
Magnetism - CORRECT ANSWER - • Ability of a magnet to attract certain
materials containing iron and to influence electrons
• Magnetism is the principle way to effectively produce AC electricity
Metric Prefixes - CORRECT ANSWER - • Measurements relating or using the
metric system of measurement
Neutron - CORRECT ANSWER - • Neutral subatomic particles that exist
within the nucleus of all atoms
• Neutrons are not involved in the conduction of electricity
Ohm - CORRECT ANSWER - • Unit of electrical opposition to the flow of
current
• A circuit has one ohm of resistance when it limits the flow of current to one
amp under a voltage pressure of one volt
, Ohm's Law - CORRECT ANSWER - • Ohm's Law states "the amount of
current flowing in a circuit is directly proportional to the circuit voltage and
inversely proportional to the circuit resistance"
• A plain language statement for Ohm's Law is; One volt causes one ampere to
flow through a resistance of one ohm.
Proton - CORRECT ANSWER - • Positively charged subatomic particles that
exist within the nucleus of all atoms
• Protons are not involved in the conduction of electricity
Resistance (R) - CORRECT ANSWER - • Electrical characteristic of a
conductor
• Opposition that a circuit, component, or substance presents to flow of
electricity
• Resistance is the force that opposes or slows down another force, drops
voltage, and consumes power
• Resistance is measured in ohms
• In mathematical problems ohms of resistance is expressed by symbol "R"
Scientific Notation - CORRECT ANSWER - • Short way of expressing a
given number between 1 and 10 multiplied by 10 to the appropriate power
Static Electricity - CORRECT ANSWER - • Electrical charge that may be
built up on a non-conductive surface by friction
• Static electricity serves no useful purpose
Volt (V) - CORRECT ANSWER - • Basic unit of electrical pressure
• A volt is the amount of force required to cause one amp of current to flow
through one ohm or resistance
• Volt is often expressed by such terms as voltage, voltage drop, potential
difference, EMF, or IR drop
