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

Anonymous User

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

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
B	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
C	All these choices are correct
D	Post a copy of FCC Part 97.13 in the station

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator must be insulated from ground
B	Fuel should be stored near the generator for rapid refueling in case of an emergency
C	All these choices are correct
D	The generator should be operated in a well-ventilated area

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

4. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	20 watts PEP output
B	10 watts PEP output
C	200 watts PEP output
D	100 watts PEP output

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	An effective radiated power equivalent to 100 watts from a half-wave dipole
B	50 watts PEP output
C	1500 watts PEP output
D	200 watts PEP output

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	There is no age limit
B	18 years
C	21 years
D	16 years

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Only when the message is intended for third parties in areas where licensing is controlled by the FCC
B	Only when the message is intended for licensed radio amateurs
C	Under no circumstances except for emergencies
D	Under any circumstances in which third party messages are permitted by FCC rules

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

Select	Answer
A	It is commonly accepted amateur practice
B	Lower sideband is the only sideband legal on these frequency bands
C	Because it is fully compatible with an AM detector
D	Lower sideband is more efficient than upper sideband at these frequencies

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
B	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
C	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
D	Listen for 2 minutes before calling CQ

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign “BK”
B	An operator must activate a manual send/receive switch before and after every transmission
C	Transmitting stations can receive between code characters and elements
D	Automatic keyers, instead of hand keys, are used to send Morse code

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

Select	Answer
A	Identify your station according to normal FCC regulations
B	Submit a log to the contest sponsor
C	Send a QSL card to the stations worked, or QSL via Logbook of The World
D	All these choices are correct

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.074 MHz to 14.077 MHz
B	Anywhere in the voice portion of the band
C	Anywhere in the CW portion of the band
D	Approximately 14.110 MHz to 14.113 MHz

13. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
B	Another name for the American sunspot number
C	A count of sunspots that is adjusted for solar emissions
D	A measure of solar radiation with a wavelength of 10.7 centimeters

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	Poor propagation at any time of day
B	Heavy distortion on signals due to photon absorption
C	World-wide propagation during daylight hours
D	High levels of atmospheric noise or static

15. - G3C04

What does the term “critical angle” mean, as applied to radio wave propagation?

Select	Answer
A	The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
B	The long path azimuth of a distant station
C	The short path azimuth of a distant station
D	The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To restrict the transmitter voice bandwidth
B	To reduce interference from carriers in the receiver passband
C	To remove interfering splatter generated by signals on adjacent frequencies
D	To eliminate receiver interference from impulse noise sources

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

Select	Answer
A	Better for measuring computer circuits
B	Faster response
C	Less prone to overload
D	Higher precision

18. - G4C04

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

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

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 1 kHz below the edge of the segment
B	At least 1 kHz above the edge of the segment
C	At least 3 kHz above the edge of the band
D	At least 3 kHz below the edge of the band

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To electrically lengthen a physically short antenna
B	To lower the radiation angle
C	To increase the power handling capacity of a whip antenna
D	To reduce radiation resistance

21. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance increases

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

Select	Answer
A	Approximately 3 dB
B	Approximately 6 dB
C	Approximately 9 dB
D	Approximately 2 dB

23. - G5C07

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

Select	Answer
A	144 to 1
B	3.5 to 1
C	12 to 1
D	24 to 1

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

Select	Answer
A	It becomes capacitive
B	Harmonics are generated
C	Catastrophic failure is likely
D	Its reactance increases

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	MMIC
B	Analog
C	Digital
D	Programmable Logic

26. - G7A08

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

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

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Multiply the RF input power by the reciprocal of the RF output power
B	Divide the RF output power by the DC input power
C	Add the RF input power to the DC output power
D	Divide the DC input power by the DC output power

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	IF amplifier
B	Carrier oscillator
C	Filter
D	RF amplifier

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By changing an oscillator’s frequency directly with a digital control signal
B	By using a transceiver’s computer data interface protocol to change frequencies
C	By reconfiguring the CW keying input to act as a tone generator
D	By keying an FM transmitter with a sub-audible tone

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Phase inversion
B	Frequency inversion
C	Heterodyning
D	Synthesizing

31. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 7-bit code with start, stop, and parity bits
B	A code using SELCAL and LISTEN
C	A code using error detection and correction
D	A 5-bit code with additional start and stop bits

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	Between 1:1 and 5:1 depending on the reflected power at the transmitter
B	1:1
C	Between 1:1 and 5:1 depending on the characteristic impedance of the line
D	5:1

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight off both ends of the antenna
B	It is a figure-eight at right angles to the antenna
C	It has a pair of lobes on one side of the antenna and a single lobe on the other side
D	It is a circle (equal radiation in all directions)

34. - G9C03

How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

Select	Answer
A	The reflector is shorter, and the director is longer
B	The reflector is longer, and the director is shorter
C	They are all the same length
D	Relative length depends on the frequency of operation

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	Electrically small loops are omnidirectional
B	In the plane of the loop
C	Broadside and in the plane of the loop
D	Broadside to the loop