Practical Circuits

5 free sample questions of the 44 in this topic. The full set is in the app.

1. Question 1

   Which term describes the ability of a receiver to detect the presence of a signal?

   • A.RF gain
   • B.Sensitivity
   • C.Selectivity
   • D.Total Harmonic Distortion
   Show answer & explanation

   Answer: B. Sensitivity

   Sensitivity. (NCVEC T7A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T7, Group T7A, Question T7A01

2. Question 2

   What is a transceiver?

   • A.A device that combines a receiver and transmitter
   • B.A device for matching feed line impedance to 50 ohms
   • C.A device for automatically sending and decoding Morse code
   • D.A device for converting receiver and transmitter frequencies to another band
   Show answer & explanation

   Answer: A. A device that combines a receiver and transmitter

   A device that combines a receiver and transmitter. (NCVEC T7A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T7, Group T7A, Question T7A02

3. Question 3

   Which of the following is used to convert a signal from one frequency to another?

   • A.Phase splitter
   • B.Mixer
   • C.Inverter
   • D.Amplifier
   Show answer & explanation

   Answer: B. Mixer

   Mixer. (NCVEC T7A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T7, Group T7A, Question T7A03

4. Question 4

   Which term describes the ability of a receiver to discriminate between multiple signals?

   • A.Discrimination ratio
   • B.Sensitivity
   • C.Selectivity
   • D.Harmonic distortion
   Show answer & explanation

   Answer: C. Selectivity

   Selectivity. (NCVEC T7A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T7, Group T7A, Question T7A04

5. Question 5

   What is the name of a circuit that generates a signal at a specific frequency?

   • A.Reactance modulator
   • B.Phase modulator
   • C.Low-pass filter
   • D.Oscillator
   Show answer & explanation

   Answer: D. Oscillator

   Oscillator. (NCVEC T7A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T7, Group T7A, Question T7A05

39 more Practical Circuits questions are in the app, along with explanations and flashcards for every one.

OnAir is an independent study aid based on the NCVEC 2026-2030 Technician Class question pool and 47 CFR Part 97. It is not affiliated with, endorsed by, or sponsored by the FCC, NCVEC, ARRL, or any government agency.