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. - G0A02

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

Select	Answer
A	Its power density
B	All these choices are correct
C	Its frequency
D	Its duty cycle

2. - G0B01

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

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

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	All these choices are correct
B	28.000 MHz to 28.025 MHz
C	7.125 MHz to 7.175 MHz
D	21.275 MHz to 21.300 MHz

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Unidentified test transmissions of less than 10 seconds in duration
B	Transmissions to assist with learning the International Morse code
C	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	All these choices are correct

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	56 kilobaud
B	19.6 kilobaud
C	300 baud
D	1200 baud

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	Amateur Extra, General, and Technician
B	Technician only
C	None, only Amateur Extra class licensees may be accredited
D	General and Technician

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The station initiating the contact must be under local or remote control
B	The interrogating transmission must be made by another automatically controlled station
C	The control operator of the interrogating station must hold an Amateur Extra class license
D	No third-party traffic may be transmitted

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

Select	Answer
A	Lower sideband
B	Upper sideband
C	Double sideband
D	Suppressed sideband

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per month
B	No more than 1 hour per week
C	No more than 1 hour per month
D	No more than 2 hours per week

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am quitting for the day
B	You are sending too fast
C	There is interference on the frequency
D	I am ready to receive

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

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	A form of Packet Radio
B	A wireless network capable of both VHF and HF band operation
C	All of the above
D	An amateur radio wireless network to send and receive email on the internet

13. - G3A09

How can high geomagnetic activity benefit radio communications?

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

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are refracted back to Earth
B	They pass through the ionosphere
C	They are amplified by interaction with the ionosphere
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

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

16. - G4A09

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

Select	Answer
A	To allow time for the amplifier to switch the antenna between the transceiver and the amplifier output
B	To allow time for the amplifier power supply to reach operating level
C	To prevent transient overmodulation
D	To prevent key clicks on CW

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

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

18. - G4C03

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

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

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

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

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent damage to the battery due to excessive voltage at high illumination levels
B	To prevent overload by regulating the charging voltage
C	To prevent discharge of the battery through the panel during times of low or no illumination
D	To limit the current flowing from the panel to a safe value

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 frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance increases

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	2.4 watts
B	60 watts
C	24 watts
D	6 watts

23. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual inductance
B	Mutual capacitance
C	Displacement current coupling
D	Capacitive coupling

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

Select	Answer
A	0.1 volt
B	1.0 volts
C	0.3 volts
D	0.7 volts

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	PL-259
C	Type N
D	RCA Phono

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It acts as a fuse for excess voltage
B	It discharges the filter capacitors when power is removed
C	It removes shock hazards from the induction coils
D	It eliminates ground loop current

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	Any RF power amplifier used in conjunction with an amateur transceiver
C	An amplifier in which the output preserves the input waveform
D	An amplifier used as a frequency multiplier

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	All these choices are correct
B	Input amplifier gain
C	Input amplifier noise figure
D	Demodulator stage bandwidth

29. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

Select	Answer
A	The transmitter’s automatic level control (ALC) is properly adjusted
B	Signal distortion caused by excessive drive or speech levels
C	The transmitter’s carrier is properly suppressed
D	Signal distortion caused by insufficient collector current

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To prevent overmodulation
B	To aid in tuning your transmitter
C	To allow time for the other station to break in during a transmission
D	Some modes have high duty cycles that could exceed the transmitter’s average power rating

31. - G8C16

Which of the following provide digital voice modes?

Select	Answer
A	FT8, FT4, and FST4
B	Winlink, PACTOR II, and PACTOR III
C	DMR, D-STAR, and SystemFusion
D	WSPR, MFSK16, and EasyPAL

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	5:1
B	2:1
C	1:5
D	1:2

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

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 point of maximum current in a radiating antenna element
D	The direction of maximum radiated field strength from the antenna

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	Element length and spacing vary logarithmically along the boom
C	Impedance varies periodically as a function of frequency
D	SWR varies periodically as a function of boom length