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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	File an Environmental Impact Statement (EIS-97) with the FCC
B	All these choices are correct
C	Take action to prevent human exposure to the excessive RF fields
D	Secure written permission from your neighbors to operate above the controlled MPE limits

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	On the antenna, opposite the feed point
B	In series with each ground lead
C	At the closest power pole ground electrode
D	Where the feed lines enter the building

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

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. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Obtain an experimental license from the FCC
B	Type-certify equipment to FCC standards
C	Publicly document the technical characteristics of the protocol
D	Submit a rule-making proposal to the FCC describing the codes and methods of the technique

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	Only the Technician band segments until your upgrade is posted in the FCC database
B	On any General or Technician class band segment
C	Only on the Technician band segments until you have a receipt for the FCC application fee payment
D	On any General or Technician class band segment except 30 meters and 60 meters

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

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	Transmit the full net roster at the beginning of every session
B	Have a backup frequency in case of interference or poor conditions
C	All these choices are correct
D	Always use multiple sets of phonetics during check-in

10. - G2C11

What does the Q signal “QRV” mean?

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

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Able, Baker, Charlie, Dog
B	Alpha, Bravo, Charlie, Delta
C	Adam, Boy, Charles, David
D	America, Boston, Canada, Denmark

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	Computer time accurate to within approximately 1 second
B	A special hardware modem
C	Receiver attenuator set to -12 dB
D	A vertically polarized antenna

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Degrade ground wave propagation
B	Improve ground wave propagation
C	Degrade high-latitude HF propagation
D	Improve high-latitude HF propagation

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24-hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency during a 24-hour period
D	The Minimum Usable Frequency for communications between two points

15. - G3C04

What does the term “critical angle” mean, as applied to radio wave propagation?

Select	Answer
A	The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
B	The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
C	The long path azimuth of a distant station
D	The short path azimuth of a distant station

16. - G4A04

What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?

Select	Answer
A	A pronounced dip
B	No change will be observed
C	A slow, rhythmic oscillation
D	A pronounced peak

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Received power that interferes with SWR readings
B	All these choices are correct
C	Desensitization which can cause intermodulation products which interfere with impedance readings
D	Generation of harmonics which interfere with frequency readings

18. - G4C03

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

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

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It increases average power
C	It increases peak power
D	It reduces harmonic distortion

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	Ground the solar panel outer metal framework
C	A series resistor must be in place
D	Ensure the battery is placed terminals-up

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Reluctance
B	Admittance
C	Conductance
D	Susceptance

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	3200 watts
B	200 watts
C	0.5 watts
D	400 watts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	1,733 picofarads
B	576.9 nanofarads
C	10.750 nanofarads
D	3,583 picofarads

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

Select	Answer
A	8.5 volts
B	10.5 volts
C	12 volts
D	6 volts

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Digital
B	MMIC
C	Analog
D	Programmable Logic

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 1
C	Symbol 11
D	Symbol 2

27. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A digital mixer
C	A clocked array of circuits that passes data in steps along the array
D	An array of operational amplifiers used for tri-state arithmetic operations

28. - G7C03

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

Select	Answer
A	To present the desired impedance to the transmitter and feed line
B	To reduce power supply ripple
C	To minimize radiation resistance
D	To minimize transmitter power output

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase modulation
B	Phase transformation
C	Phase inversion
D	Phase convolution

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Mixer
B	Multiplier
C	Reactance modulator
D	Balanced converter

31. - G8C06

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

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

32. - G9A06

In what units is RF feed line loss usually expressed?

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

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?

Select	Answer
A	It is unaffected by the location of the feed point
B	It peaks at about 1/8 wavelength from the end
C	It steadily decreases
D	It steadily increases

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	Resonant frequency is lower
C	Gain increases
D	Beamwidth 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	Electrically small loops are omnidirectional
B	Broadside to the loop
C	Broadside and in the plane of the loop
D	In the plane of the loop

Figure G7-1