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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	A receiver with digital signal processing (DSP) noise reduction
B	A calibrated field strength meter with a calibrated antenna
C	An SWR meter with a peak-reading function
D	An oscilloscope with a high-stability crystal marker generator

2. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	20 amperes
B	15 amperes
C	30 amperes
D	25 amperes

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.000 MHz to 28.025 MHz only
B	28.000 MHz to 28.300 MHz only
C	The entire band
D	28.025 MHz to 28.300 MHz only

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The FCC
B	The control operator
C	The ITU
D	The IEEE

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna
B	You must keep a record of the date, time, frequency, power level, and stations worked
C	You must keep a record of all third-party traffic
D	You must keep a record of the manufacturer of your equipment and the antenna used

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Wireless Telecommunications Bureau
B	A Volunteer Examiner Coordinator
C	The Universal Licensing System
D	The Federal Communications Commission

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When operating within one mile of an FCC Monitoring Station
B	When using a band where the Amateur Service is secondary
C	When a station is transmitting spread spectrum emissions
D	All these choices are correct

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Less subject to interference from atmospheric static crashes
B	Less bandwidth used and greater power efficiency
C	Very high-fidelity voice modulation
D	Ease of tuning on receive and immunity to impulse noise

9. - G2B06

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

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

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	Send more slowly
B	Stop sending
C	Zero beat my signal
D	I am troubled by static

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
B	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
C	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
D	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat

12. - G2E10

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

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

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is disturbed
B	VHF/UHF ducting is improved
C	VHF/UHF ducting is disturbed
D	HF communication is improved

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the MUF
B	Just below the critical frequency
C	Just above the critical frequency
D	Just above the LUF

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Propagation near the MUF
B	Short distance MF or HF propagation at high elevation angles
C	Double hop propagation near the LUF
D	Long path HF propagation at sunrise and sunset

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

Select	Answer
A	The ALC action distorts the signal
B	ALC will invert the modulation of the AFSK mode
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	All these choices are correct

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When adjusting circuits for maximum or minimum values
B	When testing logic circuits
C	When measuring the frequency of an oscillator
D	When high precision is desired

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Avoid using lock washers and star washers when making ground connections
B	Bond equipment enclosures together
C	Connect the AC neutral conductor to the ground wire
D	Connect all ground conductors in series

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 20 times more powerful
C	It is 10 times less powerful
D	It is 20 times less powerful

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To narrow the operating bandwidth of the antenna
C	To increase the “Q” of the antenna
D	To reduce RF voltage discharge from the tip of the antenna while transmitting

21. - G5A05

How does an inductor react to AC?

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

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	8.5 volts
B	34 volts
C	24 volts
D	12 volts

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

Select	Answer
A	The input voltage is multiplied by 4
B	The input voltage is divided by 4
C	Additional resistance must be added in parallel with the secondary to prevent overload
D	Additional resistance must be added in series with the primary to prevent overload

24. - G6A11

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

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

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	BNC
B	RCA Phono
C	PL-259
D	Type N

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 1
B	Symbol 11
C	Symbol 7
D	Symbol 2

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is high when either or both inputs are low
B	Output is low only when both inputs are high
C	Output is low when either or both inputs are high
D	Output is high only when both inputs are high

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	Zero
B	90 degrees
C	180 degrees
D	45 degrees

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	Vestigial sideband
B	8-bit direct sequence spread spectrum
C	8-tone frequency shift keying
D	Amplitude compressed AM

30. - G8B12

What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

Select	Answer
A	Detection
B	Intermodulation
C	Heterodyning
D	Rolloff

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By using a parity bit with each character
B	By transmitting redundant information with the data
C	By controlling transmitter output power for optimum signal strength
D	By using the Varicode character set

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation is independent of frequency
B	Attenuation increases
C	Attenuation decreases
D	Attenuation follows Marconi’s Law of Attenuation

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Lengthen the radials beyond one wavelength
B	Slope the radials downward
C	Coil the radials
D	Slope the radials upward

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The physical length of the boom
B	The spacing of each element along the boom
C	The number of elements on the boom
D	All these choices are correct

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Portable direction finding at higher HF frequencies
C	Directional receiving for MF and low HF bands
D	Portable direction finding at lower HF frequencies

Figure G7-1