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. - G0A01

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

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

2. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	Tin in the solder can “cold flow,” causing shorts in the circuit
B	High voltages can cause lead-tin solder to disintegrate suddenly
C	RF energy can convert the lead into a poisonous gas
D	Lead can contaminate food if hands are not washed carefully after handling the solder

3. - G1A06

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

Select	Answer
A	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users
B	Amateur stations may use the band only during emergencies
C	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
D	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	All these choices are correct
B	Automatic identification of repeaters
C	Transmission of bulletins of general interest to amateur radio licensees
D	Observation of propagation and reception

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1000 watts PEP output
B	100 watts PEP output
C	2000 watts PEP output
D	1500 watts PEP output

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	None, only Amateur Extra class licensees may be accredited
C	General and Technician
D	Technician only

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

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It allows “hands free” operation
B	The received signal is more natural sounding
C	It provides more power output
D	It occupies less bandwidth

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?

Select	Answer
A	Inform your local emergency coordinator
B	Acknowledge the station in distress and determine what assistance may be needed
C	Immediately cease all transmissions
D	Immediately decrease power to avoid interfering with the station in distress

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	BK
B	AR
C	SK
D	KN

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To provide emergency and public safety communications
B	To conduct efficient and orderly amateur licensing examinations
C	To coordinate repeaters for efficient and orderly spectrum usage
D	To encourage amateur radio operators to self-regulate and comply with the rules

12. - G2E02

What is VARA?

Select	Answer
A	A radio direction finding system used on VHF and UHF
B	A digital protocol used with Winlink
C	A low signal-to-noise digital mode used for EME (moonbounce)
D	A DX spotting system using a network of software defined radios

13. - G3A11

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

Select	Answer
A	4 to 8 minutes
B	14 days
C	15 hours to several days
D	28 days

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	All these choices are correct
B	Use a network of automated receiving stations on the internet to see where your transmissions are being received
C	Send a series of dots and listen for echoes
D	Check the A-index

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Energy is scattered into the skip zone through several different paths
B	The E region is not present
C	The ionospheric region involved is unstable
D	Ground waves are absorbing much of the signal

16. - G4A12

Which of the following is a common use of the dual-VFO feature on a transceiver?

Select	Answer
A	To permit full duplex operation -- that is, transmitting and receiving at the same time
B	To improve frequency accuracy by allowing variable frequency output (VFO) operation
C	To transmit on one frequency and listen on another
D	To allow transmitting on two frequencies at once

17. - G4B05

Why do voltmeters have high input impedance?

Select	Answer
A	It improves the frequency response
B	It improves the resolution of the readings
C	It allows for higher voltages to be safely measured
D	It decreases the loading on circuits being measured

18. - G4C11

What technique helps to minimize RF “hot spots” in an amateur station?

Select	Answer
A	Using surge suppressor power outlets
B	Bonding all equipment enclosures together
C	Building all equipment in a metal enclosure
D	Placing low-pass filters on all feed lines

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 MHz to 14.647 MHz
B	14.347 MHz to 14.350 MHz
C	14.344 MHz to 14.347 MHz
D	14.3455 MHz to 14.3485 MHz

20. - G4E11

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

Select	Answer
A	A series resistor must be in place
B	The solar panel must have a charge controller
C	Ensure the battery is placed terminals-up
D	Ground the solar panel outer metal framework

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Resonance causes impedance to be very high
B	Impedance is equal to the geometric mean of the inductance and capacitance
C	Resonance causes impedance to be very low
D	Impedance is equal to the arithmetic mean of the inductance and capacitance

22. - G5B14

What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?

Select	Answer
A	5000 watts
B	8.75 watts
C	2500 watts
D	625 watts

23. - G5C06

What is the voltage output of a transformer with a 500-turn primary and a 1500-turn secondary when 120 VAC is applied to the primary?

Select	Answer
A	120 volts
B	25.5 volts
C	360 volts
D	40 volts

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	The active region (between cutoff and saturation)
B	Peak and valley current points
C	Enhancement and depletion modes
D	Saturation and cutoff

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	Its thickness
B	The composition, or “mix,” of materials used
C	The ratio of outer diameter to inner diameter
D	Its conductivity

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Synchronous
B	Full-wave bridge
C	Half-wave
D	Full-wave

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To limit the modulation index
B	To cut off the final amplifier during standby periods
C	To keep the carrier on frequency
D	To eliminate self-oscillations

28. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

Select	Answer
A	Pole and zero
B	Image and harmonic
C	Upper and lower half-power
D	Cutoff and rolloff

29. - G8A14

What is link margin?

Select	Answer
A	The opposite of fade margin
B	Transmit power minus receiver sensitivity
C	Receiver sensitivity plus 3 dB
D	The difference between received power level and minimum required signal level at the input to the receiver

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

Select	Answer
A	Encoding reverts to the default character set
B	The checksum overflows
C	Packets will be routed incorrectly
D	The connection is dropped

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	4:1
B	1:4
C	2:1
D	1:2

33. - G9B12

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

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

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Front-to-back ratio decreases
B	Gain increases
C	Beamwidth increases
D	Resonant frequency is lower

35. - G9D09

What is the primary use of a Beverage antenna?

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