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

2. - G0B10

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

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

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	30 meters
B	12 meters
C	60 meters
D	11 meters

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	Only “Q” signals are permitted
B	They are not permitted
C	They may be used if they do not obscure the meaning of a message
D	They are limited to those expressly listed in Part 97 of the FCC rules

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	PEP output from the transmitter
B	RMS output from the transmitter
C	RMS input to the antenna
D	PEP input to the antenna

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	30 days
B	180 days
C	365 days
D	For as long as your current license is valid

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 42 through 45
B	Channels 1 through 4
C	No part
D	Anywhere in the band

8. - G2A08

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

Select	Answer
A	Say your call sign once
B	Say “Breaker Breaker”
C	Say “QRZ” several times, followed by your call sign
D	Say “CQ” followed by the call sign of either station

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only contacts with other stations within the 48 contiguous states
B	Only SSTV contacts
C	Only digital contacts
D	Only contacts with stations not within the 48 contiguous states

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

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Toward the north
B	180 degrees from the station’s short-path heading
C	Along the gray line
D	Toward the rising sun

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	All these choices are correct
B	Failure to establish a connection between stations
C	Frequent retries or timeouts
D	Long pauses in message transmission

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A temporary disturbance in Earth’s geomagnetic field
B	A sudden drop in the solar flux index
C	Ripples in the geomagnetic force
D	A thunderstorm that affects radio propagation

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Path distance and location
B	Time of day and season
C	Solar radiation and ionospheric disturbances
D	All these choices are correct

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E region is not present
B	The ionospheric region involved is unstable
C	Energy is scattered into the skip zone through several different paths
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 allow transmitting on two frequencies at once
B	To improve frequency accuracy by allowing variable frequency output (VFO) operation
C	To transmit on one frequency and listen on another
D	To permit full duplex operation -- that is, transmitting and receiving at the same time

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	A wavemeter
C	A sidetone monitor
D	An oscilloscope

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	Corrosion of the ground rod
B	A ground loop
C	High RF voltages on the enclosures of station equipment
D	Overheating of ground straps

19. - G4D08

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

Select	Answer
A	7.178 MHz to 7.184 MHz
B	7.1765 MHz to 7.1795 MHz
C	7.175 MHz to 7.178 MHz
D	7.178 MHz to 7.181 MHz

20. - G4E11

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

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

21. - G5A05

How does an inductor react to AC?

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

22. - G5B11

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

Select	Answer
A	0.707
B	2.00
C	1.00
D	1.414

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	33.3 microfarads
B	300 microfarads
C	0.33 microfarads
D	3.0 microfarads

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

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

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Metal Monolayer Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Multi-Mode Integrated Circuit

26. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	360 degrees
B	90 degrees
C	270 degrees
D	180 degrees

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

Select	Answer
A	More than 50% but less than 100%
B	100%
C	Less than 50%
D	50%

28. - G7C12

What is the frequency above which a low-pass filter’s output power is less than half the input power?

Select	Answer
A	Cutoff frequency
B	Rolloff frequency
C	Neper frequency
D	Notch frequency

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Pulse modulation
C	Multiplex modulation
D	Amplitude modulation

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	16 kHz
B	5 kHz
C	8 kHz
D	3 kHz

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Dot and dash
B	Mark and space
C	On and off
D	High and low

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	1:1
B	Between 1:1 and 5:1 depending on the reflected power at the transmitter
C	Between 1:1 and 5:1 depending on the characteristic impedance of the line
D	5:1

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	Antenna height has no effect on the pattern
B	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
C	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
D	If the antenna is too high, the pattern becomes unpredictable

34. - G9C05

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

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

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	In the plane of the loop
B	Electrically small loops are omnidirectional
C	Broadside and in the plane of the loop
D	Broadside to the loop