NCATT AET Certification Exam V2 2025/2026 | Aviation Electronics Technician | Questions & Correct Answers | Verified Competency |Grade A (100% Correct Elaborations)

NCATT AET Certification Exam V2
2025/2026 | Aviation Electronics
Technician | Questions & Correct
Answers | Verified Competency |Grade A
(100% Correct Elaborations)



33) The "negative temperature coefficient" of a thermistor means that as temperature increases,
resistance will do what?

A) increase B) decrease C) Remain the same

B) decrease




34) Using the swamping resistor for thermal stability, what type of feedback is developed to
control the amplifier?

A) Regenerative B) Degenerative
C) Positive feedback

B) Degenerative




35) Which of the following devices is used to dissipate heat into the air?

A) Heat sink B) Circuit board

C) Swamping resistor D) Coupling Capacitor
A) Heat sink




1

, NCATT AET Certification Exam V2
2025/2026 | Aviation Electronics
Technician | Questions & Correct
Answers | Verified Competency |Grade A
(100% Correct Elaborations)
36) What type of amplifier coupling is used that can amplify DC voltages as well as AC signals?

A) LC B) RC

C) Direct D) Transformer
C) Direct




37) In a common collector amplifier, degenerative feedback is how many degrees out of phase
with the input signal?

A) 0 degrees B) 90 degrees
C) 180 degrees D) 270 degrees

C) 180 degrees




38) The common base amplifier has a voltage gain ________ than one, but a current gain
_______ than one.
A) Less than one, less than one B) Greater than one, less than one

C) Less than one, greater than one D) Greater than one, greater than one

38) B (*C is correct for a "Common Collector", D is correct for a "Common Emitter")




39) What type of waveform is produced by a sinusoidal oscillator?
A) Saw tooth B) Sine wave


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, NCATT AET Certification Exam V2
2025/2026 | Aviation Electronics
Technician | Questions & Correct
Answers | Verified Competency |Grade A
(100% Correct Elaborations)
C) Square wave D) Rectangular

B) Sine wave




40) The basic requirements for sustaining oscillations in an oscillator are a power supply, FDD,
amplifier, and __________.

A) regenerative feedback B) degenerative feedback

C) negative feedback D) Constructive feedback

A) regenerative feedback




45) If the positive alteration of a square wave is 100 µsec in duration, then the PRF is:

A) 5 kHz B) 10 kHz

C) 50 kHz D) 100 kHz

45) A *PRT includes negative alternation = 200 µsec tota




46) What type of output waveform is produced by an astable multivibrator?

A) Sine wave B) Saw tooth

C) Square wave or rectangular D) Rectangular wave

C) Square wave or rectangular



3

, NCATT AET Certification Exam V2
2025/2026 | Aviation Electronics
Technician | Questions & Correct
Answers | Verified Competency |Grade A
(100% Correct Elaborations)

47) The astable multivibrator is a:

A) Sweep generator B) Divide by two circuit
C) Time base generator D) Free running oscillator

D) Free running oscillator




48) The monostable multivibrator output PRF is determined by the:

A) Input trigger frequency B) width of the input trigger

C) Cutoff time of Q1 and Q2 D) discharge time of C1 and C2

A) Input trigger frequency




49) With a transistor amplifier operating in class B, the collector current will flow for what
percentage/how many degrees of the input signal? [Alternate: "the amplifier's collector current is
cutoff for:"] A) 10% B) 20% C) 50% D) 70.7%

(or)

A) 90o B) 360o C) 180o D) More than 180o but less than 360o
C) 180o




51) The interchange of energy between the inductor and capacitor in a tank circuit is called
what?
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