NCATT EXAM 2025 QUESTIONS
AND ANSWERS
Degenerative - ....ANSWER ...-using the swamping risistor for thermal
stability, what type of feedbacl is develpoed to control the amplifier
heat sink - ....ANSWER ...-what devise is used to dissipate heat into the air
direct - ....ANSWER ...-what type of amplifoer coupling is used that can
amplify DC voltages as well as AC signals
180 degrees - ....ANSWER ...-in a common collector amplifier degenerative
feedback is how many degrees out of phase with the input signal
greater than one/less than one - ....ANSWER ...-the common base amplifier
has a voltage gain ___________than one, but current gain ____________ than
one.
sine wave - ....ANSWER ...-what type of waveform is produced by a
sinusoidal oscillator
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,regenerative feedback - ....ANSWER ...-the basic requirements for sustaining
oscillations in an oscillator are a power supply,FDD,amplifier and __________
5kHz (PRF=1/PRT) - ....ANSWER ...-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 - ....ANSWER ...-what type of output waveform
is produced by an astable multivibrator
free running oscillator - ....ANSWER ...-the astable multivibrator is a
input trigger frequency - ....ANSWER ...-the monostable multivibrator
output PRF is determined by the
50% 180 degrees - ....ANSWER ...-with a transistor amplifier operating in
classB, the collector current will flow for what percentage/how many degrees of
the input signal?
transformer - ....ANSWER ...-what type of amplifier coupling is used for
impedance matching and circuit isolation
the flywheel effect - ....ANSWER ...-the interchange of energy between the
inductor and capacitor in a tank circuit is called
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, amount of forward bias - ....ANSWER ...-the amplifiers class of operation is
determined by
0 ohms/short - ....ANSWER ...-whats the resistance of normally closed
contacts when the relay is de energized
the plunger pulled into the coil - ....ANSWER ...-what distinguishes a
solenoid from a basic relay
the spring - ....ANSWER ...-what part of a basic relay returns the armature to
its de energized position?
two (on/off) - ....ANSWER ...-how many paths of current are required for a
holding relay coil
core & coil - ....ANSWER ...-what parts of a relay comprise the primary
(control) circuit
armature contracts & spring - ....ANSWER ...-what parts of a relay comprise
the secondary (controlled) circuit
115v - ....ANSWER ...-aircraft wire is normally rated at what voltage
band pass - ....ANSWER ...-transformers are considered to be what kind of
filter
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
AND ANSWERS
Degenerative - ....ANSWER ...-using the swamping risistor for thermal
stability, what type of feedbacl is develpoed to control the amplifier
heat sink - ....ANSWER ...-what devise is used to dissipate heat into the air
direct - ....ANSWER ...-what type of amplifoer coupling is used that can
amplify DC voltages as well as AC signals
180 degrees - ....ANSWER ...-in a common collector amplifier degenerative
feedback is how many degrees out of phase with the input signal
greater than one/less than one - ....ANSWER ...-the common base amplifier
has a voltage gain ___________than one, but current gain ____________ than
one.
sine wave - ....ANSWER ...-what type of waveform is produced by a
sinusoidal oscillator
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,regenerative feedback - ....ANSWER ...-the basic requirements for sustaining
oscillations in an oscillator are a power supply,FDD,amplifier and __________
5kHz (PRF=1/PRT) - ....ANSWER ...-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 - ....ANSWER ...-what type of output waveform
is produced by an astable multivibrator
free running oscillator - ....ANSWER ...-the astable multivibrator is a
input trigger frequency - ....ANSWER ...-the monostable multivibrator
output PRF is determined by the
50% 180 degrees - ....ANSWER ...-with a transistor amplifier operating in
classB, the collector current will flow for what percentage/how many degrees of
the input signal?
transformer - ....ANSWER ...-what type of amplifier coupling is used for
impedance matching and circuit isolation
the flywheel effect - ....ANSWER ...-the interchange of energy between the
inductor and capacitor in a tank circuit is called
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, amount of forward bias - ....ANSWER ...-the amplifiers class of operation is
determined by
0 ohms/short - ....ANSWER ...-whats the resistance of normally closed
contacts when the relay is de energized
the plunger pulled into the coil - ....ANSWER ...-what distinguishes a
solenoid from a basic relay
the spring - ....ANSWER ...-what part of a basic relay returns the armature to
its de energized position?
two (on/off) - ....ANSWER ...-how many paths of current are required for a
holding relay coil
core & coil - ....ANSWER ...-what parts of a relay comprise the primary
(control) circuit
armature contracts & spring - ....ANSWER ...-what parts of a relay comprise
the secondary (controlled) circuit
115v - ....ANSWER ...-aircraft wire is normally rated at what voltage
band pass - ....ANSWER ...-transformers are considered to be what kind of
filter
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
