US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	All commercial stations; amateur radio stations are exempt
B	Only stations with antennas lower than one wavelength above the ground
C	All stations with a time-averaged transmission of more than one milliwatt
D	Only stations transmitting more than 500 watts PEP

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	Only the neutral wire
B	All wires
C	Only the hot wires
D	Only the ground wire

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

Select	Answer
A	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
B	The lower frequency portion
C	The upper frequency portion
D	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Encrypted messages, if not intended to facilitate a criminal act
B	Occasional retransmission of weather and propagation forecast information from US government stations
C	Unidentified transmissions of less than 10 seconds duration for test purposes only
D	Automatic retransmission of other amateur signals by any amateur station

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
B	Publicly document the technical characteristics of the protocol
C	Type-certify equipment to FCC standards
D	Obtain an experimental license from the FCC

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

Select	Answer
A	Whenever they operate using General class frequency privileges
B	Whenever they operate using Technician frequency privileges
C	Whenever they operate on any amateur frequency
D	A special identifier is not required if their General class license application has been filed with the FCC

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 1 through 4
B	Anywhere in the band
C	No part
D	Channels 42 through 45

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Antenna inductance or capacitance
B	RF clipping level
C	Transmit audio or microphone gain
D	Attenuator level

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All these choices are correct
B	Follow the voluntary band plan
C	Identify your station by transmitting your call sign at least 3 times
D	Listen on the frequency for at least two minutes to be sure it is clear

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	KN
C	AR
D	BK

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
B	Compare vertical and horizontal signal strengths on the input frequency
C	Compare signal strengths between the input and output of the repeater
D	All these choices are correct

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Send an email to the system control operator
B	Respond when the station broadcasts its SSID
C	Send QRL in Morse code
D	Transmit a connect message on the station’s published frequency

13. - G3A13

What does the A-index measure?

Select	Answer
A	The relative position of sunspots on the surface of the Sun
B	The long-term stability of Earth’s geomagnetic field
C	The amount of polarization of the Sun’s electric field
D	The solar radio flux at Boulder, Colorado

14. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Propagation via ordinary skywave communications is not possible over that path
B	Double-hop propagation along the path is more common
C	HF communications over the path are enhanced
D	Propagation over the path on all HF frequencies is enhanced

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The F region is unstable during daylight hours
B	The D region absorbs signals at these frequencies during daylight hours
C	The E region is unstable during daylight hours
D	The F region absorbs signals at these frequencies during daylight hours

16. - G4A10

What is the function of an electronic keyer?

Select	Answer
A	Computer interface for PSK and RTTY operation
B	Automatic transmit/receive switching
C	Automatic generation of dots and dashes for CW operation
D	To allow time for switching the antenna from the receiver to the transmitter

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	An oscilloscope
B	A sidetone monitor
C	A wavemeter
D	A field strength meter

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	A CW signal at a nearly pure audio frequency
B	Severely distorted audio
C	On-and-off humming or clicking
D	A chirpy CW signal

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	All these choices are correct
B	Excessive background noise
C	Excess intermodulation products
D	Distorted speech

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Series-parallel
C	Shunt
D	Bypass

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Impedance is equal to the arithmetic mean of the inductance and capacitance
B	Resonance causes impedance to be very low
C	Impedance is equal to the geometric mean of the inductance and capacitance
D	Resonance causes impedance to be very high

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.414
B	0.707
C	2.00
D	1.00

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	An inductor in series
B	An inductor in parallel
C	A capacitor in series
D	A capacitor in parallel

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase the control grid resistance
B	To reduce grid-to-plate capacitance
C	To increase efficiency
D	To decrease plate resistance

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	High power handling capability
B	Better suited for power supply regulation
C	Low power consumption
D	Better suited for RF amplification

26. - G7A08

Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Inherently more stable
B	Fewer circuit components are required
C	Faster switching time makes higher output voltage possible
D	High-frequency operation allows the use of smaller components

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	A frequency multiplier and a mixer
C	A circulator and a filter operating in a feed-forward loop
D	An amplifier and a divider

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Notch depth
B	Ultimate rejection
C	Insertion loss
D	Rolloff

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Frequency modulation
B	Vestigial sideband
C	Single sideband
D	Phase modulation

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	All these choices are correct
B	2F1-F2
C	3F1-F2
D	5F1-3F2

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Volumetric
B	Binary
C	Viterbi
D	Varicode

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR makes it difficult to measure transmission line loss
B	High SWR increases loss in a lossy transmission line
C	High SWR reduces the relative effect of transmission line loss
D	There is no relationship between transmission line loss and SWR

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It peaks at about 1/8 wavelength from the end
B	It is unaffected by the location of the feed point
C	It steadily increases
D	It steadily decreases

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The maximum voltage standing wave point on a radiating element
C	The direction of maximum radiated field strength from the antenna
D	The point of maximum current in a radiating antenna element

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
B	A horizontal dipole placed at approximately 1/2 wavelength above the ground
C	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
D	A vertical dipole placed at approximately 1/2 wavelength above the ground