NCATT Exam 2025 Questions and Answers

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NCATT Exam 2025 Questions and Answers

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Complete collection of NCATT 2025 exam questions and answers, covering core concepts in avionics technology and technician certification.

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NCATT Exam 2025 Questions and
Answers

The "negative temperature coefficient" of a thermistor means that as temperature
increase resistance will?

Increase

Decrease

Remain the same - ✔✔Decrease

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

Regenerative

Degenerative

COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1

,Positive feedback - ✔✔Degerative

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

Heat sink

Circuit Board

Swamping resistor

Coupling Capacitor - ✔✔Heat sink

What type of amplifier coupling is used that can amplify DC voltages as well as AC
signals?

LC

RC

Direct

Transformer - ✔✔Direct

COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2

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

0 degrees

90 degrees

180 degrees

270 degrees - ✔✔180 degrees

The common base amplifier has a voltage gain _______ than one, but a current gain
_______ than one.

Less than one, less than one

Greater than one, less than one

Less than one, greater than one

Greater than one, greater than one - ✔✔Greater than one, less than one

What type of waveform is produced by a sinusoidal oscillator?

COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3

, Saw tooth

Sine wave

Square wave

Rectangular - ✔✔Sine Wave

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

Regenerative feedback

degenerative feedback

negative feedback - ✔✔regenerative feedback

[App. A, Fig. 1] The components that control the time between t0 and t1 for Q1 are:

C3, R7, R6, and R5

C4, R8, R6, and R5

COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4

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