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

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	All these choices are correct
B	Unground the base of the tower
C	Notify the electric company that a person will be working on the tower
D	Make sure all circuits that supply power to the tower are locked out and tagged

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

Select	Answer
A	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz
B	The upper frequency portion
C	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
D	The lower frequency portion

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	All these choices are correct
B	Regular transmissions offering equipment for sale, if intended for amateur radio use
C	Transmissions to assist with learning the International Morse code
D	Unidentified test transmissions of less than 10 seconds in duration

5. - G1C05

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

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

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	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
C	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
D	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
B	On any band segment where digital operation is permitted
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	Only in the non-phone Extra Class segments of the bands

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Any caller is welcome to respond
B	Only stations in Germany
C	Any stations outside the lower 48 states
D	Only contest stations

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Except during emergencies, no amateur station has priority access to any frequency
B	Nets have priority
C	Contest operations should yield to non-contest use of frequencies
D	QSOs in progress have priority

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	Listening only for a specific station or stations
B	Closing station now
C	Operating full break-in
D	No US stations should call

11. - G2D06

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

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

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide DX spotting reports to aid contesters and DXers
B	To provide real time propagation data by monitoring amateur radio transmissions worldwide
C	To provide FM repeater coverage in remote areas
D	To provide high-speed data services during an emergency or community event

13. - G3A09

How can high geomagnetic activity benefit radio communications?

Select	Answer
A	Increases signal strength for HF signals passing through the polar regions
B	Reduce long delayed echoes
C	Creates auroras that can reflect VHF signals
D	Improve HF long path propagation

14. - G3B04

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

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

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Scatter propagation occurs only at night
B	There are very large, sudden swings in signal strength
C	Signals have a fluttering sound
D	Phone signals have high intelligibility

16. - G4A08

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

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

17. - G4B05

Why do voltmeters have high input impedance?

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

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Connect the AC neutral conductor to the ground wire
B	Avoid using lock washers and star washers when making ground connections
C	Bond equipment enclosures together
D	Connect all ground conductors in series

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 1.5 times
B	Approximately 2 times
C	Approximately 8 times
D	Approximately 4 times

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent discharge of the battery through the panel during times of low or no illumination
B	To prevent damage to the battery due to excessive voltage at high illumination levels
C	To limit the current flowing from the panel to a safe value
D	To prevent overload by regulating the charging voltage

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Inductive reactance and capacitive reactance cancel
B	Current and voltage are equal
C	Resistance is cancelled
D	The circuit radiates all its energy in the form of radio waves

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 11 milliwatts
B	Approximately 61 watts
C	Approximately 61 milliwatts
D	Approximately 11 watts

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. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

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

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	50 MHz
B	40 GHz
C	4 GHz
D	500 MHz

26. - G7A12

Which symbol in Figure G7-1 represents a solid core transformer?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 7
D	Symbol 6

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	FM
B	SSB
C	All these choices are correct
D	AM

28. - G7C14

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

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

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency modulation
B	Frequency convolution
C	Frequency conversion
D	Frequency transformation

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	Multiplier
B	Balanced converter
C	Reactance modulator
D	Mixer

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Long path propagation
B	Backscatter propagation
C	Insufficient modulation
D	Overmodulation

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The frequency of the signal and the length of the line
C	The distance between the centers of the conductors and the length of the line
D	The distance between the centers of the conductors and the radius of the conductors

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Omnidirectional in azimuth
B	Bi-directional in azimuth
C	Isotropic
D	Hemispherical

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The relative position of the driven element with respect to the reflectors and directors
B	The ratio of forward gain to dipole gain
C	The power radiated in the major lobe compared to that in the opposite direction
D	The number of directors versus the number of reflectors

35. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It allows simultaneous vertical and horizontal polarization
B	It narrows the main lobe in elevation
C	It narrows the main lobe in azimuth
D	It allows quick selection of vertical or horizontal polarization

Figure G7-1