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. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The average amount of power developed by the transmitter over a specific 24-hour period
C	The total RF exposure averaged over a certain period
D	The average time it takes RF radiation to have any long-term effect on the body

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Parallel to the water supply line
B	As close to the station equipment as possible
C	Outside the building
D	Next to the closest power pole

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	21.275 MHz to 21.300 MHz
B	28.000 MHz to 28.025 MHz
C	7.125 MHz to 7.175 MHz
D	All these choices are correct

4. - G1B07

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

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

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the manufacturer of your equipment and the antenna used
B	You must keep a record of the date, time, frequency, power level, and stations worked
C	If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna
D	You must keep a record of all third-party traffic

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Wireless Telecommunications Bureau
B	A Volunteer Examiner Coordinator
C	The Federal Communications Commission
D	The Universal Licensing System

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must be for other licensed amateurs
B	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
C	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
D	They must relate to emergencies or disaster relief

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

Select	Answer
A	Because it is fully compatible with an AM detector
B	It is commonly accepted amateur practice
C	Lower sideband is more efficient than upper sideband at these frequencies
D	Lower sideband is the only sideband legal on these frequency bands

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per week
B	No more than 1 hour per week
C	No more than 2 hours per month
D	No more than 1 hour per month

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Repeat everything twice
B	Increase your power
C	Send slower
D	Change frequency

11. - G2D05

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

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

12. - G2E11

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

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

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Rotation of the Sun’s surface layers around its axis
B	Long term oscillations in the upper atmosphere
C	The position of the Moon in its orbit
D	Cyclic variation in Earth’s radiation belts

14. - G3B04

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

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

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	Signals are scattered from the magnetosphere, which is not a good reflector
D	Propagation is via ducts in the F region, which absorb most of the energy

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To restrict the transmitter voice bandwidth
C	To remove interfering splatter generated by signals on adjacent frequencies
D	To reduce interference from carriers in the receiver passband

17. - G4B13

Which of the following can be measured with an antenna analyzer?

Select	Answer
A	Power output from a transmitter
B	Gain of a directional antenna
C	Impedance of coaxial cable
D	Front-to-back ratio of an antenna

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It ensures that hazardous voltages cannot appear on the chassis
B	It ensures that the neutral wire is grounded
C	It prevents signal overload
D	It prevents a blown fuse in the event of an internal short circuit

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 10 times less powerful
B	It is 20 times less powerful
C	It is 100 times more powerful
D	It is 20 times more powerful

20. - G4E08

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

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

21. - G5A03

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

Select	Answer
A	Reactance
B	Admittance
C	Reluctance
D	Conductance

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	6 watts
B	2.4 watts
C	60 watts
D	24 watts

23. - G5C10

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

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

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To decrease plate resistance
B	To increase efficiency
C	To reduce grid-to-plate capacitance
D	To increase the control grid resistance

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A small bayonet connector used for data circuits
B	A moisture-resistant RF connector useful to 10 GHz
C	A low noise figure VHF connector
D	A nickel plated version of the PL-259

26. - G7A11

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

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

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is low when either or both inputs are high
B	Output is high only when both inputs are high
C	Output is low only when both inputs are high
D	Output is high when either or both inputs are low

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	Demodulator stage bandwidth
B	Input amplifier noise figure
C	All these choices are correct
D	Input amplifier gain

29. - G8A13

What is a link budget?

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

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	416.7 Hz
B	60 kHz
C	5 kHz
D	101.75 Hz

31. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Higher power is needed as compared to RTTY for similar error rates
B	Error correction is used to ensure accurate message reception
C	Upper case letters are sent with more power
D	Upper case letters use longer Varicode bit sequences and thus slow down transmission

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The feed line must be an odd number of electrical quarter wavelengths long
C	The feed line must be an even number of physical half wavelengths long
D	The antenna feed point must be at DC ground potential

33. - G9B10

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

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

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 number of directors versus the number of reflectors
C	The power radiated in the major lobe compared to that in the opposite direction
D	The ratio of forward gain to dipole gain

35. - G9D08

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

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

Figure G7-1