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. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It heats body tissue
B	It cools body tissue
C	It causes radiation poisoning
D	It causes the blood count to reach a dangerously low level

2. - G0B06

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Electrical safety of the station
B	Acceptable bandwidth limits
C	RF exposure limits of the human body
D	Acceptable modulation limits

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

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	Under no circumstances, FCC rules take priority
B	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
C	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
D	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	200 watts PEP output
B	2000 watts PEP output
C	1500 watts PEP output
D	1000 watts PEP output

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Those of the remote station’s country and the FCC’s third-party regulations
B	Those of both the remote station’s country and the FCC
C	Only those of the FCC
D	Only those of the remote station’s country

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
B	Only if the 10-meter repeater control operator holds at least a General class license
C	Under no circumstances
D	Only during an FCC-declared general state of communications emergency

8. - G2A09

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

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

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	3 kHz to 6 kHz
C	150 Hz to 500 Hz
D	1 kHz to 3 kHz

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The fastest speed at which you are comfortable copying, but no faster than the CQ
B	The fastest speed at which you are comfortable copying, but no slower than the CQ
C	At the standard calling speed of 10 wpm
D	At the standard calling speed of 5 wpm

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The FCC requires a log of all international third-party traffic
B	To help with a reply if the FCC requests information about your station
C	The FCC requires a log of all international contacts
D	The log provides evidence of operation needed to renew a license without retest

12. - G2E04

Which of the following is good practice when choosing a transmitting frequency to answer a station calling CQ using FT8?

Select	Answer
A	Call on any frequency in the waterfall except the station’s frequency
B	Find a clear frequency during the same time slot as the calling station
C	Find a clear frequency during the alternate time slot to the calling station
D	Always call on the station’s frequency

13. - G3A09

How can high geomagnetic activity benefit radio communications?

Select	Answer
A	Improve HF long path propagation
B	Reduce long delayed echoes
C	Creates auroras that can reflect VHF signals
D	Increases signal strength for HF signals passing through the polar regions

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

Select	Answer
A	1,200 miles
B	180 miles
C	2,500 miles
D	12,000 miles

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

16. - G4A05

Why is automatic level control (ALC) used with an RF power amplifier?

Select	Answer
A	To balance the transmitter audio frequency response
B	To prevent excessive drive
C	To increase overall efficiency
D	To reduce harmonic radiation

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	Antenna front-to-back ratio
C	Standing wave ratio
D	RF interference

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	On-and-off humming or clicking
B	Clearly audible speech
C	Distorted speech
D	A steady hum whenever the transmitter is on the air

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 3 kHz above the edge of the band
C	At least 3 kHz below the edge of the band
D	At least 1 kHz above the edge of the segment

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	The control computers
B	The battery charging system
C	The fuel delivery system
D	All these choices are correct

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A Pi-network
B	A length of transmission line
C	All these choices are correct
D	A transformer

22. - G5B11

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

Select	Answer
A	0.707
B	1.00
C	2.00
D	1.414

23. - G5C07

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

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

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Screen grid
B	Suppressor grid
C	Trigger electrode
D	Control grid

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 RF amplification
C	Better suited for power supply regulation
D	Low power consumption

26. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 5
B	Symbol 1
C	Symbol 2
D	Symbol 4

27. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	6
B	16
C	8
D	3

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in transmitter to perform frequency multiplication
B	Used in a single sideband receiver to extract the modulated signal
C	Used in test gear to detect spurious mixing products
D	Used in an FM receiver to filter out unwanted sidebands

29. - G8A13

What is a link budget?

Select	Answer
A	The financial costs associated with operating a radio link
B	The difference between transmit power and receiver sensitivity
C	The sum of transmit power and antenna gains minus system losses as seen at the receiver
D	The sum of antenna gains minus system losses

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Higher symbol rates require wider bandwidth
B	Symbol rate and bandwidth are not related
C	Lower symbol rates require wider bandwidth
D	Bandwidth is half the symbol rate

31. - G8C07

Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

Select	Answer
A	AMTOR
B	FT8
C	MSK144
D	MFSK32

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 100 feet
B	Ohms per 100 feet
C	Ohms per 1,000 feet
D	Decibels per 1,000 feet

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	11 feet
B	8 feet
C	16 feet
D	21 feet

34. - G9C08

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

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

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By deploying a capacitance hat
B	By varying the base loading inductance
C	By extending and retracting the whip
D	By varying its body capacitance

Figure G7-1