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

2. - G0B06

Which of the following is covered by the National Electrical Code?

Select	Answer
A	RF exposure limits of the human body
B	Electrical safety of the station
C	Acceptable bandwidth limits
D	Acceptable modulation limits

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

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
B	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
C	Only when the foreign country has a formal third-party agreement filed with the FCC
D	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country

5. - G1C05

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

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

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	Contact the FCC to have the license reinstated
D	There are no requirements other than being able to show a copy of the expired 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	Only in the non-phone Extra Class segments of the bands
C	On any band segment where digital operation is permitted
D	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands

8. - G2A02

Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

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

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	150 Hz to 500 Hz
B	5 Hz to 50 Hz
C	1 kHz to 3 kHz
D	3 kHz to 6 kHz

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	We have worked before
B	We have already confirmed the contact
C	I have received and understood
D	Send slower

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To conduct efficient and orderly amateur licensing examinations
B	To encourage amateur radio operators to self-regulate and comply with the rules
C	To provide emergency and public safety communications
D	To coordinate repeaters for efficient and orderly spectrum usage

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. - G3A06

What is a geomagnetic storm?

Select	Answer
A	Ripples in the geomagnetic force
B	A sudden drop in the solar flux index
C	A thunderstorm that affects radio propagation
D	A temporary disturbance in Earth’s geomagnetic field

14. - G3B04

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

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

15. - G3C08

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

Select	Answer
A	Propagation is via ducts in the F region, which absorb most of the 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 ground waves, which absorb most of the signal energy

16. - G4A09

What is the purpose of delaying RF output after activating a transmitter’s keying line to an external amplifier?

Select	Answer
A	To allow time for the amplifier to switch the antenna between the transceiver and the amplifier output
B	To allow time for the amplifier power supply to reach operating level
C	To prevent transient overmodulation
D	To prevent key clicks on CW

17. - G4B12

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

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

18. - G4C09

How can the effects of ground loops be minimized?

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

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

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

21. - G5A02

What is reactance?

Select	Answer
A	Reinforcement of the flow of direct current caused by resistance
B	Opposition to the flow of direct current caused by resistance
C	Opposition to the flow of alternating current caused by capacitance or inductance
D	Reinforcement of the flow of alternating current caused by capacitance or inductance

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. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual inductance
B	Capacitive coupling
C	Displacement current coupling
D	Mutual capacitance

24. - G6A03

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

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

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for RF amplification
C	High power handling capability
D	Better suited for power supply regulation

26. - G7A12

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

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

27. - G7B11

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

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

28. - G7C11

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

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

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The waveform created by connecting the peak values of the modulated signal
B	The bandwidth of the modulated signal
C	Spurious signals that envelop nearby frequencies
D	The carrier frequency that contains the signal

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	3 kHz
C	16 kHz
D	5 kHz

31. - G8C01

On what band do amateurs share channels with the unlicensed Wi-Fi service?

Select	Answer
A	2.4 GHz
B	902 MHz
C	432 MHz
D	10.7 GHz

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	Higher loss reduces SWR measured at the input to the line
C	Higher loss increases SWR measured at the input to the line
D	Higher loss increases the accuracy of SWR measured at the input to the line

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight at right angles to the antenna
B	It has a pair of lobes on one side of the antenna and a single lobe on the other side
C	It is a figure-eight off both ends of the antenna
D	It is a circle (equal radiation in all directions)

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The maximum voltage standing wave point on a radiating element
B	The point of maximum current in a radiating antenna element
C	The direction of maximum radiated field strength from the antenna
D	The magnitude of the maximum vertical angle of radiation

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 and in the plane of the loop
C	Broadside to the loop
D	In the plane of the loop

Figure G7-1