NCATT AET PASSED Actual Exam Questions and CORRECT Answers
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Course
NCATT AET
Institution
NCATT AET
NCATT AET PASSED Actual Exam
Questions and CORRECT Answers
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...
NCATT AET PASSED Actual Exam
Questions and CORRECT Answers
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
Watts (W) - CORRECT ANSWER✔✔- • Basic unit of power that is the product of voltage
multiplied by current
• One watt is power po
produced in a circuit that has one amp of current flowing under a pressure of one volt
Working Voltage - CORRECT ANSWER✔✔- • Maximum amount of DC voltage that can be
safely applied across a capacitor
Alternating Current (AC) - CORRECT ANSWER✔✔- • Flow of electrons that continuously
changes it value in magnitude and periodically reverses direction (sine-wave)
• Alternating current is much easier to produce in large quantities as compared to DC. The
time required for one cycle of AC to occur is called the period
Apparently Power - CORRECT ANSWER✔✔- • Product of effective voltage and effective
current which is expressed in Volt Amps (VA) rather than Watts (W) without reference to
phase shift, if any, between voltage and current
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