NCATT AET (Aviation Electronics Technician) Certification Exam
(2025–2026 Edition) | 100% Verified Questions & Answers
Question 1
1) The components that control the time between t0 and t1 are:
Correct Answer
C4, R8, R6, and R5
Question 2
2) In the astable multivibrator, moving the arm of R6 to the right will cause what to
happen?
Correct Answer
Decrease Q1 cutoff time
Question 3
3) Increasing the resistance of R5 will cause the astable mutlivibrator out PRT to ______
and the PRF to _______.
Correct Answer
Increase; decrease
Question 4
4) What is the discharge path for capacitor C3?
Correct Answer
R7, R6, R5, Q1, and D1.
Question 5
5) [App. A, Fig. 1] Transistors Q1 & Q2 act as (function as):
Correct Answer
Both as Switches
,Question 6
6) [App. A, Fig. 1] If the resistive value of R7 is increased, how does it affect Q2's cutoff
time?
Correct Answer
Cutoff time will increase
Question 7
7) [App. A, Fig. 2] What is the phase relationship between the input and the output signals
(common base transistor)?
Correct Answer
0-degree phase shift
Question 8
8) [App. A, Fig. 2] What is the purpose of R4 in the common base amplifier?
Correct Answer
Develop the input signal
Question 9
9) [App. A, Fig. 3] In the RC coupled amplifier; the low frequency gain loss is due to the
reactance of what components?
Correct Answer
C1, C2, and C3
Question 10
10) [App. A, Fig. 3] In the RC coupled amplifier; the high frequency gain loss is due to the
inter-element capacitance of what components?
,Correct Answer
Q1 and Q2
Question 11
11) [App. A, Fig. 4] What is the quiescent (stable) state of Q1 and Q2 before they are
triggered?
Correct Answer
Q1 off; Q2 on
Question 12
12) [App. A, Fig. 4] What is the discharge path for capacitor C1, through?
Correct Answer
R2, Vcc, Q1
Question 13
13) [App. A, Fig. 4] If the input PRF increased, the time between T1-T2 will _____ and the
time between T2-T3 will _____.
Correct Answer
Remain the same; decrease
Question 14
14) [App. A, Fig. 4] If the resistance of R2 is decreased, the time between T1-T2 will _____
and the time between T2-T3 will _____.
Correct Answer
Decrease; increase
Question 15
, 15) [App. A, Fig. 5] What components make up the Frequency Determining Device (FDD)
in the series-fed Hartley?
Correct Answer
L1, L2, and C3
Question 16
16) [App. A, Fig. 5] The series-fed Hartley oscillator can be tuned to a new frequency by
changing the value of?
Correct Answer
C3
Question 17
17) [App. A, Fig. 5] What component(s) keep the oscillator frequency from entering the
power supply?
Correct Answer
C4
Question 18
18) [App. A, Fig. 5 & Fig. 6] In the series-fed Hartley oscillator, the regenerative feedback
path is from?
Correct Answer
L2, L1, C2, to the base of Q1
Question 19
19) [App. A, Fig. 5] In the series-fed Hartley oscillator, Q1's forward bias is developed by?
Correct Answer
R1 and R2
(2025–2026 Edition) | 100% Verified Questions & Answers
Question 1
1) The components that control the time between t0 and t1 are:
Correct Answer
C4, R8, R6, and R5
Question 2
2) In the astable multivibrator, moving the arm of R6 to the right will cause what to
happen?
Correct Answer
Decrease Q1 cutoff time
Question 3
3) Increasing the resistance of R5 will cause the astable mutlivibrator out PRT to ______
and the PRF to _______.
Correct Answer
Increase; decrease
Question 4
4) What is the discharge path for capacitor C3?
Correct Answer
R7, R6, R5, Q1, and D1.
Question 5
5) [App. A, Fig. 1] Transistors Q1 & Q2 act as (function as):
Correct Answer
Both as Switches
,Question 6
6) [App. A, Fig. 1] If the resistive value of R7 is increased, how does it affect Q2's cutoff
time?
Correct Answer
Cutoff time will increase
Question 7
7) [App. A, Fig. 2] What is the phase relationship between the input and the output signals
(common base transistor)?
Correct Answer
0-degree phase shift
Question 8
8) [App. A, Fig. 2] What is the purpose of R4 in the common base amplifier?
Correct Answer
Develop the input signal
Question 9
9) [App. A, Fig. 3] In the RC coupled amplifier; the low frequency gain loss is due to the
reactance of what components?
Correct Answer
C1, C2, and C3
Question 10
10) [App. A, Fig. 3] In the RC coupled amplifier; the high frequency gain loss is due to the
inter-element capacitance of what components?
,Correct Answer
Q1 and Q2
Question 11
11) [App. A, Fig. 4] What is the quiescent (stable) state of Q1 and Q2 before they are
triggered?
Correct Answer
Q1 off; Q2 on
Question 12
12) [App. A, Fig. 4] What is the discharge path for capacitor C1, through?
Correct Answer
R2, Vcc, Q1
Question 13
13) [App. A, Fig. 4] If the input PRF increased, the time between T1-T2 will _____ and the
time between T2-T3 will _____.
Correct Answer
Remain the same; decrease
Question 14
14) [App. A, Fig. 4] If the resistance of R2 is decreased, the time between T1-T2 will _____
and the time between T2-T3 will _____.
Correct Answer
Decrease; increase
Question 15
, 15) [App. A, Fig. 5] What components make up the Frequency Determining Device (FDD)
in the series-fed Hartley?
Correct Answer
L1, L2, and C3
Question 16
16) [App. A, Fig. 5] The series-fed Hartley oscillator can be tuned to a new frequency by
changing the value of?
Correct Answer
C3
Question 17
17) [App. A, Fig. 5] What component(s) keep the oscillator frequency from entering the
power supply?
Correct Answer
C4
Question 18
18) [App. A, Fig. 5 & Fig. 6] In the series-fed Hartley oscillator, the regenerative feedback
path is from?
Correct Answer
L2, L1, C2, to the base of Q1
Question 19
19) [App. A, Fig. 5] In the series-fed Hartley oscillator, Q1's forward bias is developed by?
Correct Answer
R1 and R2
