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

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1. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

SelectAnswer
AAll these choices are correct
BIts duty cycle
CIts frequency
DIts power density

2. - G0B03

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

SelectAnswer
A30 amperes
B15 amperes
C25 amperes
D20 amperes

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

SelectAnswer
AAmateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
BAmateur stations must not cause harmful interference to primary users and must accept interference from primary users
CAmateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
DAmateur stations may use the band only during emergencies

4. - G1B10

What is the power limit for beacon stations?

SelectAnswer
A200 watts PEP output
B100 watts PEP output
C20 watts PEP output
D10 watts PEP output

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

SelectAnswer
A56 kilobaud
B19.6 kilobaud
C1200 baud
D300 baud

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?

SelectAnswer
AWhenever they operate on any amateur frequency
BWhenever they operate using Technician frequency privileges
CWhenever they operate using General class frequency privileges
DA 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?

SelectAnswer
AChannels 1 through 4
BNo part
CAnywhere in the band
DChannels 42 through 45

8. - G2A08

What is the recommended way to break into a phone contact?

SelectAnswer
ASay “QRZ” several times, followed by your call sign
BSay “CQ” followed by the call sign of either station
CSay your call sign once
DSay “Breaker Breaker”

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

SelectAnswer
AInform your local emergency coordinator
BImmediately cease all transmissions
CImmediately decrease power to avoid interfering with the station in distress
DAcknowledge the station in distress and determine what assistance may be needed

10. - G2C01

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

SelectAnswer
AAn operator must activate a manual send/receive switch before and after every transmission
BTransmitting stations can receive between code characters and elements
CBreaking stations send the Morse code prosign “BK”
DAutomatic keyers, instead of hand keys, are used to send Morse code

11. - G2D10

What is QRP operation?

SelectAnswer
ATransmission using Quick Response Protocol
BTraffic relay procedure net operation
CRemote piloted model control
DLow-power transmit operation

12. - G2E12

Which of the following describes Winlink?

SelectAnswer
AA form of Packet Radio
BAn amateur radio wireless network to send and receive email on the internet
CA wireless network capable of both VHF and HF band operation
DAll of the above

13. - G3A11

How long does it take a coronal mass ejection to affect radio propagation on Earth?

SelectAnswer
A14 days
B28 days
C4 to 8 minutes
D15 hours to several days

14. - G3B07

What does LUF stand for?

SelectAnswer
ALowest Usable Frequency during the past 60 minutes
BLowest Usable Frequency for communications to any point outside a 100-mile radius
CThe Lowest Usable Frequency for communications between two specific points
DThe Lowest Usable Frequency during a 24-hour period

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

SelectAnswer
APropagation near the MUF
BLong path HF propagation at sunrise and sunset
CDouble hop propagation near the LUF
DShort distance MF or HF propagation at high elevation angles

16. - G4A09

What is the purpose of delaying RF output after activating a transmitter’s keying line to an external amplifier?

SelectAnswer
ATo prevent key clicks on CW
BTo prevent transient overmodulation
CTo allow time for the amplifier power supply to reach operating level
DTo allow time for the amplifier to switch the antenna between the transceiver and the amplifier output

17. - G4B10

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

SelectAnswer
ARadio wave propagation
BStanding wave ratio
CAntenna front-to-back ratio
DRF interference

18. - G4C06

What is a possible effect of a resonant ground connection?

SelectAnswer
AHigh RF voltages on the enclosures of station equipment
BCorrosion of the ground rod
COverheating of ground straps
DA ground loop

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

SelectAnswer
A7.178 MHz to 7.184 MHz
B7.175 MHz to 7.178 MHz
C7.178 MHz to 7.181 MHz
D7.1765 MHz to 7.1795 MHz

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

SelectAnswer
AGround the solar panel outer metal framework
BThe solar panel must have a charge controller
CEnsure the battery is placed terminals-up
DA series resistor must be in place

21. - G5A02

What is reactance?

SelectAnswer
AReinforcement of the flow of alternating current caused by capacitance or inductance
BOpposition to the flow of alternating current caused by capacitance or inductance
CReinforcement of the flow of direct current caused by resistance
DOpposition to the flow of direct current caused by resistance

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

SelectAnswer
AIt decreases as more parallel branches are added to the circuit
BIt equals the sum of the currents through each branch
CIt equals the average of the branch currents
DIt is the sum of the reciprocal of each individual voltage drop

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

SelectAnswer
A80 ohms
B17 ohms
C0.17 ohms
D5.9 ohms

24. - G6A02

What is an advantage of batteries with low internal resistance?

SelectAnswer
ALong life
BHigh discharge current
CRapid recharge
DHigh voltage

25. - G6B03

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

SelectAnswer
ALow power consumption
BHigh power handling capability
CBetter suited for power supply regulation
DBetter suited for RF amplification

26. - G7A08

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

SelectAnswer
AFaster switching time makes higher output voltage possible
BHigh-frequency operation allows the use of smaller components
CFewer circuit components are required
DInherently more stable

27. - G7B03

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

SelectAnswer
AOutput is high when either or both inputs are low
BOutput is low when either or both inputs are high
COutput is high only when both inputs are high
DOutput is low only when both inputs are high

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

SelectAnswer
ATo minimize radiation resistance
BTo minimize transmitter power output
CTo present the desired impedance to the transmitter and feed line
DTo reduce power supply ripple

29. - G8A01

How is direct binary FSK modulation generated?

SelectAnswer
ABy using a transceiver’s computer data interface protocol to change frequencies
BBy keying an FM transmitter with a sub-audible tone
CBy reconfiguring the CW keying input to act as a tone generator
DBy changing an oscillator’s frequency directly with a digital control signal

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

SelectAnswer
AIt minimizes power consumption in the receiver
BIt results in the best signal-to-noise ratio
CIt is required by FCC rules
DIt improves impedance matching of the antenna

31. - G8C10

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

SelectAnswer
ABy using a parity bit with each character
BBy controlling transmitter output power for optimum signal strength
CBy using the Varicode character set
DBy transmitting redundant information with the data

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

SelectAnswer
AHigher loss reduces SWR measured at the input to the line
BHigher loss increases the accuracy of SWR measured at the input to the line
CHigher loss increases SWR measured at the input to the line
DTransmission line loss does not affect the SWR measurement

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?

SelectAnswer
AIt peaks at about 1/8 wavelength from the end
BIt steadily decreases
CIt is unaffected by the location of the feed point
DIt steadily increases

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

SelectAnswer
AAll these choices are correct
BIt does not require the driven element to be insulated from the boom
CIt is useful for matching multiband antennas
DIt does not require any inductors or capacitors

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

SelectAnswer
AThey have poor harmonic rejection
BThey must be used with an antenna tuner
CThey must be fed with open wire line
DThey present low impedance on all design frequencies