NCATT AET CORE EXAM 2026 TEST QUESTIONS AND
ANSWERS SCORED A+
✔✔`Frequency - ✔✔the number of cycles of AC completed in one second.
✔✔Hertz - ✔✔the unit of measure for Frequency. One Hertz is equal to one cylce of AC
per second
✔✔400 Hertz - ✔✔normal AC frequency for aircraft use
✔✔AC from generators used for power are - ✔✔normally at realatively low frequencies
✔✔Radio waves are generated - ✔✔in radio frequency ranges RF
✔✔Z - ✔✔the symbol for Impedance
✔✔Impedance - ✔✔an electrical characteristic of a conductor when an alternating
current is applied
✔✔Impedance is the total opposition - ✔✔to current flow of AC in an electrical circut
✔✔Impedance is the sum of resistance to current flow in - ✔✔resistance, capacitance,
and inductance
✔✔Impedance only refers to the resistance of - ✔✔sinusoidal alternating current
✔✔Complex Impedance - ✔✔may be used interchangeably with impedance because
impedance is a complex quantity
✔✔Magnitude - ✔✔represents the ratio of voltage difference amplitude to the current
amplitude
✔✔In phase impedance - ✔✔is very low
✔✔Exactly 180 degrees out of phase - ✔✔impedance is very high
✔✔Maximum impedance - ✔✔cancels out the signal entirely
✔✔Reactance - ✔✔part of electrical impedance, a measure of opposition to a
sinusoidal alternating current
✔✔In order to determine the total impedance - ✔✔Reactance and resistance are
required
,✔✔Capacitance Reactance is symbolized - ✔✔by a capital X with a C subscript
✔✔Capacitance Reactance - ✔✔is the opposition to current flow in a circuit that is
produced by a capacitor
✔✔Capacitance Reactance describes - ✔✔the effect that capacitance has on an AC
circuit
✔✔Capitance causes - ✔✔current to lead voltage in phase
✔✔ICE stands for - ✔✔current leads voltage
✔✔the formula for Capacitve Reactance - ✔✔1 over 2 pi multiplied by frequency
multiplied by capacitance
✔✔Inductive Reactance - ✔✔the opposition to current flow in a circut that contains an
inductor
✔✔Inductance causes - ✔✔current to lag voltage in phase
✔✔ELI stans for - ✔✔voltage leads current
✔✔the formula for inductive reactance - ✔✔two pi multiplied by frquency multiplied by
inductance
✔✔Sine-Wave - ✔✔alternating current waveform that is produced by a rotary generator
✔✔Sine waves are values of - ✔✔voltage and current that start at zeror and smoothly
rise to a peak value
✔✔Sine waves rise and fall - ✔✔from peak back to zero
✔✔Concerning sine waves, the top or zero - ✔✔would be where the conductor is
cutting through no lines of flux
✔✔At the 90 degree position - ✔✔the conductor is moving the fastest and the most line
of flux would be cut
✔✔90 degree - ✔✔position at which the most positive current and voltage are produced
✔✔180 degree position - ✔✔no lines of flux are being cut by the conductor and the
voltage and current are at zero
, ✔✔270 degree position - ✔✔the current and voltage is at maximum again though the
conductor is moving across the lines of flux in the opposite direction
✔✔The difference in produced polarity from the 90 degree position from the 270 degree
position - ✔✔is opposite
✔✔Root Mean Square - ✔✔is the effective value of sine wave alternatin current
✔✔The RMS value - ✔✔.707 of the peak value
✔✔The value of an AC voltage is - ✔✔continually change from zero up to the positive
peak, through the negative peak and back to zero again
✔✔Peak voltage is not a good measure of - ✔✔a circuit's voltage since most of the time
it is less than that
✔✔Symbol for RMS - ✔✔a V with a RMS subscript
✔✔Symbol for peak voltage - ✔✔a V with a peak subscript
✔✔What is the equation for RMS Voltage - ✔✔.707 multiplied by peak voltage
✔✔What is the equation for peak voltage - ✔✔1.414 multiplied times RMS voltage
✔✔.7 and 1.4 are useful for - ✔✔sine waves
✔✔The RMS value is the - ✔✔effective value of a varying voltage or current
✔✔A lamp connected to a 6 volt RMS AC supply will supply the same amount of
brightness as - ✔✔a steady 6 volt DC supply
✔✔The average voltage of an AC signal is - ✔✔zero because the positive and negative
cancel each other out
✔✔Effective Voltage - ✔✔is the amount of AC that produces the same amount of heat
as a corresponding value of DC
✔✔Effective voltage of AC is - ✔✔the RMS value
✔✔Unless otherwise specified all values of AC voltage are considered - ✔✔effective
values
✔✔Effective value of household AC - ✔✔115 Vac
ANSWERS SCORED A+
✔✔`Frequency - ✔✔the number of cycles of AC completed in one second.
✔✔Hertz - ✔✔the unit of measure for Frequency. One Hertz is equal to one cylce of AC
per second
✔✔400 Hertz - ✔✔normal AC frequency for aircraft use
✔✔AC from generators used for power are - ✔✔normally at realatively low frequencies
✔✔Radio waves are generated - ✔✔in radio frequency ranges RF
✔✔Z - ✔✔the symbol for Impedance
✔✔Impedance - ✔✔an electrical characteristic of a conductor when an alternating
current is applied
✔✔Impedance is the total opposition - ✔✔to current flow of AC in an electrical circut
✔✔Impedance is the sum of resistance to current flow in - ✔✔resistance, capacitance,
and inductance
✔✔Impedance only refers to the resistance of - ✔✔sinusoidal alternating current
✔✔Complex Impedance - ✔✔may be used interchangeably with impedance because
impedance is a complex quantity
✔✔Magnitude - ✔✔represents the ratio of voltage difference amplitude to the current
amplitude
✔✔In phase impedance - ✔✔is very low
✔✔Exactly 180 degrees out of phase - ✔✔impedance is very high
✔✔Maximum impedance - ✔✔cancels out the signal entirely
✔✔Reactance - ✔✔part of electrical impedance, a measure of opposition to a
sinusoidal alternating current
✔✔In order to determine the total impedance - ✔✔Reactance and resistance are
required
,✔✔Capacitance Reactance is symbolized - ✔✔by a capital X with a C subscript
✔✔Capacitance Reactance - ✔✔is the opposition to current flow in a circuit that is
produced by a capacitor
✔✔Capacitance Reactance describes - ✔✔the effect that capacitance has on an AC
circuit
✔✔Capitance causes - ✔✔current to lead voltage in phase
✔✔ICE stands for - ✔✔current leads voltage
✔✔the formula for Capacitve Reactance - ✔✔1 over 2 pi multiplied by frequency
multiplied by capacitance
✔✔Inductive Reactance - ✔✔the opposition to current flow in a circut that contains an
inductor
✔✔Inductance causes - ✔✔current to lag voltage in phase
✔✔ELI stans for - ✔✔voltage leads current
✔✔the formula for inductive reactance - ✔✔two pi multiplied by frquency multiplied by
inductance
✔✔Sine-Wave - ✔✔alternating current waveform that is produced by a rotary generator
✔✔Sine waves are values of - ✔✔voltage and current that start at zeror and smoothly
rise to a peak value
✔✔Sine waves rise and fall - ✔✔from peak back to zero
✔✔Concerning sine waves, the top or zero - ✔✔would be where the conductor is
cutting through no lines of flux
✔✔At the 90 degree position - ✔✔the conductor is moving the fastest and the most line
of flux would be cut
✔✔90 degree - ✔✔position at which the most positive current and voltage are produced
✔✔180 degree position - ✔✔no lines of flux are being cut by the conductor and the
voltage and current are at zero
, ✔✔270 degree position - ✔✔the current and voltage is at maximum again though the
conductor is moving across the lines of flux in the opposite direction
✔✔The difference in produced polarity from the 90 degree position from the 270 degree
position - ✔✔is opposite
✔✔Root Mean Square - ✔✔is the effective value of sine wave alternatin current
✔✔The RMS value - ✔✔.707 of the peak value
✔✔The value of an AC voltage is - ✔✔continually change from zero up to the positive
peak, through the negative peak and back to zero again
✔✔Peak voltage is not a good measure of - ✔✔a circuit's voltage since most of the time
it is less than that
✔✔Symbol for RMS - ✔✔a V with a RMS subscript
✔✔Symbol for peak voltage - ✔✔a V with a peak subscript
✔✔What is the equation for RMS Voltage - ✔✔.707 multiplied by peak voltage
✔✔What is the equation for peak voltage - ✔✔1.414 multiplied times RMS voltage
✔✔.7 and 1.4 are useful for - ✔✔sine waves
✔✔The RMS value is the - ✔✔effective value of a varying voltage or current
✔✔A lamp connected to a 6 volt RMS AC supply will supply the same amount of
brightness as - ✔✔a steady 6 volt DC supply
✔✔The average voltage of an AC signal is - ✔✔zero because the positive and negative
cancel each other out
✔✔Effective Voltage - ✔✔is the amount of AC that produces the same amount of heat
as a corresponding value of DC
✔✔Effective voltage of AC is - ✔✔the RMS value
✔✔Unless otherwise specified all values of AC voltage are considered - ✔✔effective
values
✔✔Effective value of household AC - ✔✔115 Vac
