NCATT AET Unofficial (Non-
Figure Questions) Exam 2025
Questions and Answers 100% Pass
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
36) What type of amplifier coupling is used that can amplify DC voltages as well as AC
signals?
A) LC B) RC
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,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
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?
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,A) Sine wave B) Saw tooth
C) Square wave or rectangular D) Rectangular wave - ✔✔C) Square wave or
rectangular
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?
A) Damping B) degeneration
C) Loading effect D) the flywheel effect - ✔✔D) the flywheel effect
52) The amplifier's class of operation is determined by what?
A) Fidelity B) efficiency
C) output waveform D) amount of forward bias - ✔✔D) amount of forward bias
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, 53) What is the resistance of normally closed contacts when the relay is de-energized?
A) 0Ω / short B) Infinite Ω C) 50Ω - ✔✔A) 0Ω / short
54) What distinguishes a solenoid from a basic relay?
A) A coil to create a magnetic field. B) The plunger (armature) pulled into the coil.
C) Has multiple Normally Open (NO) or Normally Closed (NC) contacts. - ✔✔B) The
plunger (armature) pulled into the coil.
55) What part of a basic relay returns the armature to its de-energized position?
A) The coil B) The core C) The spring D) The contacts - ✔✔C) The spring
56) How many paths of current are required for a holding relay coil?
A) One B) Two C) Three D) Four - ✔✔B) Two
57) What parts of a relay comprise the Primary (Control) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
✔✔B) Core & Coil
58) What parts of a relay comprise the Secondary (Controlled) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
✔✔A) Armature, Contacts, Spring
59) Aircraft wire is normally rated at what voltage? A) 28Vdc B) 115Vac C) 26Vac -
✔✔B) 115Vac
60) Transformers are considered what kind of filter?
A) Band pass B) Band Stop C) High Pass D) Low Pass - ✔✔A) Band pass
61) What is the flow of electrons through a conductor called?
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
Figure Questions) Exam 2025
Questions and Answers 100% Pass
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
36) What type of amplifier coupling is used that can amplify DC voltages as well as AC
signals?
A) LC B) RC
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,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
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?
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,A) Sine wave B) Saw tooth
C) Square wave or rectangular D) Rectangular wave - ✔✔C) Square wave or
rectangular
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?
A) Damping B) degeneration
C) Loading effect D) the flywheel effect - ✔✔D) the flywheel effect
52) The amplifier's class of operation is determined by what?
A) Fidelity B) efficiency
C) output waveform D) amount of forward bias - ✔✔D) amount of forward bias
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, 53) What is the resistance of normally closed contacts when the relay is de-energized?
A) 0Ω / short B) Infinite Ω C) 50Ω - ✔✔A) 0Ω / short
54) What distinguishes a solenoid from a basic relay?
A) A coil to create a magnetic field. B) The plunger (armature) pulled into the coil.
C) Has multiple Normally Open (NO) or Normally Closed (NC) contacts. - ✔✔B) The
plunger (armature) pulled into the coil.
55) What part of a basic relay returns the armature to its de-energized position?
A) The coil B) The core C) The spring D) The contacts - ✔✔C) The spring
56) How many paths of current are required for a holding relay coil?
A) One B) Two C) Three D) Four - ✔✔B) Two
57) What parts of a relay comprise the Primary (Control) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
✔✔B) Core & Coil
58) What parts of a relay comprise the Secondary (Controlled) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
✔✔A) Armature, Contacts, Spring
59) Aircraft wire is normally rated at what voltage? A) 28Vdc B) 115Vac C) 26Vac -
✔✔B) 115Vac
60) Transformers are considered what kind of filter?
A) Band pass B) Band Stop C) High Pass D) Low Pass - ✔✔A) Band pass
61) What is the flow of electrons through a conductor called?
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