US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A01

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

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

2. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	25 amperes
B	30 amperes
C	20 amperes
D	15 amperes

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	21.275 MHz to 21.300 MHz
C	28.000 MHz to 28.025 MHz
D	7.125 MHz to 7.175 MHz

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	On any frequency if power is less than 1 watt
B	On any frequency if transmissions are in Morse code
C	21.08 MHz to 21.09 MHz
D	28.20 MHz to 28.30 MHz

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	1.8 kHz
B	2.8 kHz
C	3 kHz
D	5.6 kHz

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
D	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

Select	Answer
A	100 watts
B	10 watts
C	100 milliwatts
D	1500 watts

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

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

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Only a person holding an FCC-issued amateur operator license
B	Only a RACES net control operator
C	A person holding an FCC-issued amateur operator license or an appropriate government official
D	Any control operator when normal communication systems are operational

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

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

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
B	A map that shows accurate land masses
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows true bearings and distances from a specific location

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.110 MHz to 14.113 MHz
B	Anywhere in the CW portion of the band
C	Anywhere in the voice portion of the band
D	Approximately 14.074 MHz to 14.077 MHz

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

Select	Answer
A	It disrupts communications via satellite more than direct communications
B	It enhances propagation on all HF frequencies
C	It disrupts signals on lower frequencies more than those on higher frequencies
D	None, because only areas on the night side of the Earth are affected

14. - G3B05

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

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

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagation is via ground waves, which absorb most of the signal energy
B	Only a small part of the signal energy is scattered into the skip zone
C	Propagation is via ducts in the F region, which absorb most of the energy
D	Signals are scattered from the magnetosphere, which is not a good reflector

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Highest plate voltage while minimizing grid current
B	Minimum plate current without exceeding maximum allowable grid current
C	Minimum SWR on the antenna
D	Desired power output without exceeding maximum allowable plate current

17. - G4B01

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

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

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	The ground rod is resonant
C	Insulated wire has been used for the ground wire
D	The ground wire has high impedance on that frequency

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	14.3455 MHz to 14.3485 MHz
B	14.347 MHz to 14.350 MHz
C	14.344 MHz to 14.347 MHz
D	14.347 MHz to 14.647 MHz

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.5 VDC
B	0.02 VDC
C	1.38 VDC
D	0.2 VDC

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	B
B	X
C	Z
D	Y

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	8.5 volts
B	12 volts
C	24 volts
D	34 volts

23. - G5C04

What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

Select	Answer
A	75 ohms
B	150 ohms
C	67 ohms
D	300 ohms

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	Long life
B	Rapid recharge
C	High discharge current
D	High voltage

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

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 6
B	Symbol 1
C	Symbol 7
D	Symbol 11

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	An amplifier and a divider
B	A filter and an amplifier operating in a feedback loop
C	A circulator and a filter operating in a feed-forward loop
D	A frequency multiplier and a mixer

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	Detection
B	Filtering
C	Modulation
D	All these choices are correct

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency modulation
B	Phase modulation
C	Amplitude modulation
D	Power modulation

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

Select	Answer
A	The sum and difference
B	The arithmetic product
C	The average
D	The ratio

31. - G8C15

What does an FT8 signal report of +3 mean?

Select	Answer
A	The signal is 3 dB over S9
B	The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
C	The signal is S3 (weak signals)
D	The signal is 3 times the noise level of an equivalent SSB signal

32. - G9A02

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

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

33. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	33 feet
B	16 feet
C	8 feet
D	24 feet

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
B	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
C	A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
D	A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching

35. - G9D09

What is the primary use of a Beverage antenna?

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

Figure G7-1