NCATT EXAM 2025 QUESTIONS
AND ANSWERS
Degenerative - ✔✔using the swamping risistor for thermal stability, what type of
feedbacl is develpoed to control the amplifier
heat sink - ✔✔what devise is used to dissipate heat into the air
direct - ✔✔what type of amplifoer coupling is used that can amplify DC voltages as
well as AC signals
180 degrees - ✔✔in a common collector amplifier degenerative feedback is how many
degrees out of phase with the input signal
greater than one/less than one - ✔✔the common base amplifier has a voltage gain
___________than one, but current gain ____________ than one.
sine wave - ✔✔what type of waveform is produced by a sinusoidal oscillator
regenerative feedback - ✔✔the basic requirements for sustaining oscillations in an
oscillator are a power supply,FDD,amplifier and __________
5kHz (PRF=1/PRT) - ✔✔if the position alternation of a square wave is 100 microsec in
duration, the PRF is (PRT includes negative alternation =200microsec)
square wave or rectangular - ✔✔what type of output waveform is produced by an
astable multivibrator
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, free running oscillator - ✔✔the astable multivibrator is a
input trigger frequency - ✔✔the monostable multivibrator output PRF is determined by
the
50% 180 degrees - ✔✔with a transistor amplifier operating in classB, the collector
current will flow for what percentage/how many degrees of the input signal?
transformer - ✔✔what type of amplifier coupling is used for impedance matching and
circuit isolation
the flywheel effect - ✔✔the interchange of energy between the inductor and capacitor in
a tank circuit is called
amount of forward bias - ✔✔the amplifiers class of operation is determined by
0 ohms/short - ✔✔whats the resistance of normally closed contacts when the relay is de
energized
the plunger pulled into the coil - ✔✔what distinguishes a solenoid from a basic relay
the spring - ✔✔what part of a basic relay returns the armature to its de energized
position?
two (on/off) - ✔✔how many paths of current are required for a holding relay coil
core & coil - ✔✔what parts of a relay comprise the primary (control) circuit
armature contracts & spring - ✔✔what parts of a relay comprise the secondary
(controlled) circuit
115v - ✔✔aircraft wire is normally rated at what voltage
band pass - ✔✔transformers are considered to be what kind of filter
current - ✔✔what is the flow of electrons through a conductor called?
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
AND ANSWERS
Degenerative - ✔✔using the swamping risistor for thermal stability, what type of
feedbacl is develpoed to control the amplifier
heat sink - ✔✔what devise is used to dissipate heat into the air
direct - ✔✔what type of amplifoer coupling is used that can amplify DC voltages as
well as AC signals
180 degrees - ✔✔in a common collector amplifier degenerative feedback is how many
degrees out of phase with the input signal
greater than one/less than one - ✔✔the common base amplifier has a voltage gain
___________than one, but current gain ____________ than one.
sine wave - ✔✔what type of waveform is produced by a sinusoidal oscillator
regenerative feedback - ✔✔the basic requirements for sustaining oscillations in an
oscillator are a power supply,FDD,amplifier and __________
5kHz (PRF=1/PRT) - ✔✔if the position alternation of a square wave is 100 microsec in
duration, the PRF is (PRT includes negative alternation =200microsec)
square wave or rectangular - ✔✔what type of output waveform is produced by an
astable multivibrator
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, free running oscillator - ✔✔the astable multivibrator is a
input trigger frequency - ✔✔the monostable multivibrator output PRF is determined by
the
50% 180 degrees - ✔✔with a transistor amplifier operating in classB, the collector
current will flow for what percentage/how many degrees of the input signal?
transformer - ✔✔what type of amplifier coupling is used for impedance matching and
circuit isolation
the flywheel effect - ✔✔the interchange of energy between the inductor and capacitor in
a tank circuit is called
amount of forward bias - ✔✔the amplifiers class of operation is determined by
0 ohms/short - ✔✔whats the resistance of normally closed contacts when the relay is de
energized
the plunger pulled into the coil - ✔✔what distinguishes a solenoid from a basic relay
the spring - ✔✔what part of a basic relay returns the armature to its de energized
position?
two (on/off) - ✔✔how many paths of current are required for a holding relay coil
core & coil - ✔✔what parts of a relay comprise the primary (control) circuit
armature contracts & spring - ✔✔what parts of a relay comprise the secondary
(controlled) circuit
115v - ✔✔aircraft wire is normally rated at what voltage
band pass - ✔✔transformers are considered to be what kind of filter
current - ✔✔what is the flow of electrons through a conductor called?
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
