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

2. - G0B01

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

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

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	160 meters
C	30 meters
D	12 meters

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The FCC
B	The ITU
C	The control operator
D	The IEEE

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	Publicly document the technical characteristics of the protocol
C	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
D	Type-certify equipment to FCC standards

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

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	The third party’s amateur license has been revoked and not reinstated
B	The third party is not a US citizen
C	The third party is speaking in a language other than English
D	All these choices are correct

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Transmit audio or microphone gain
B	Attenuator level
C	RF clipping level
D	Antenna inductance or capacitance

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Advise the interfering stations that you are on the frequency and that you have priority
B	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
C	Switch to the opposite sideband
D	Decrease power and continue to transmit

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

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
B	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
C	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
D	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat

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 DX spotting system using a network of software defined radios
D	A low signal-to-noise digital mode used for EME (moonbounce)

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	A thunderstorm that affects radio propagation
D	Ripples in the geomagnetic force

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	Poor propagation at any time of day
B	World-wide propagation during daylight hours
C	High levels of atmospheric noise or static
D	Heavy distortion on signals due to photon absorption

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Chordal hop
B	Scatter
C	Faraday rotation
D	Short-path

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

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ammeter
B	An ohmmeter
C	A signal generator
D	An oscilloscope

18. - G4C06

What is a possible effect of a resonant ground connection?

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

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz below the edge of the band
B	At least 1 kHz below the edge of the segment
C	At least 3 kHz above the edge of the band
D	At least 1 kHz above the edge of the segment

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Series-parallel
C	Bypass
D	Shunt

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reluctance
B	Reactance
C	Conductance
D	Admittance

22. - G5B11

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

Select	Answer
A	0.707
B	1.414
C	2.00
D	1.00

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	3.3 millihenries
B	3.3 henries
C	30 millihenries
D	0.30 henries

24. - G6A01

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

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

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

Select	Answer
A	By creating an impedance in the current’s path
B	It converts common-mode current to differential mode current
C	Ferrites expel magnetic fields
D	By creating an out-of-phase current to cancel the common-mode current

26. - G7A01

What is the function of a power supply bleeder resistor?

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

27. - G7B06

What is a shift register?

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

28. - G7C10

What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

Select	Answer
A	All types of modulation can be created with appropriate processing
B	The need for high resolution analog-to-digital converters is eliminated
C	Automatic conversion of the signal from digital to analog
D	Minimum detectible signal level is reduced

29. - G8A13

What is a link budget?

Select	Answer
A	The sum of antenna gains minus system losses
B	The sum of transmit power and antenna gains minus system losses as seen at the receiver
C	The financial costs associated with operating a radio link
D	The difference between transmit power and receiver sensitivity

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	All these choices are correct
B	2F1-F2
C	3F1-F2
D	5F1-3F2

31. - G8C07

Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

Select	Answer
A	FT8
B	AMTOR
C	MSK144
D	MFSK32

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR increases loss in a lossy transmission line
B	There is no relationship between transmission line loss and SWR
C	High SWR makes it difficult to measure transmission line loss
D	High SWR reduces the relative effect of transmission line loss

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	263 feet
C	132 feet
D	84 feet

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The number of elements on the boom
B	The physical length of the boom
C	All these choices are correct
D	The spacing of each element along the boom

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By extending and retracting the whip
B	By varying its body capacitance
C	By deploying a capacitance hat
D	By varying the base loading inductance