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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By measurement of field strength using calibrated equipment
B	All these choices are correct
C	By calculation based on FCC OET Bulletin 65
D	By calculation based on computer modeling

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	The generator must be insulated from ground
C	The generator should be operated in a well-ventilated area
D	All these choices are correct

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	All these choices are correct
C	7.125 MHz to 7.175 MHz
D	28.000 MHz to 28.025 MHz

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 IEEE
B	The control operator
C	The ITU
D	The FCC

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	200 watts PEP output
B	1500 watts PEP output
C	1200 watts PEP output
D	1000 watts PEP output

6. - G1D07

Volunteer Examiners are accredited by what organization?

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

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only during an FCC-declared general state of communications emergency
B	Under no circumstances
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only if the 10-meter repeater control operator holds at least a General class license

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 the only sideband legal on these frequency bands
D	Lower sideband is more efficient than upper sideband at these frequencies

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

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	You are sending too fast
B	There is interference on the frequency
C	I am quitting for the day
D	I am ready to receive

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare signal strengths between the input and output of the repeater
B	Compare vertical and horizontal signal strengths on the input frequency
C	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
D	All these choices are correct

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	425 Hz
B	850 Hz
C	170 Hz
D	85 Hz

13. - G3A06

What is a geomagnetic storm?

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

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Path distance and location
B	Solar radiation and ionospheric disturbances
C	Time of day and season
D	All these choices are correct

15. - G3C09

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

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

16. - G4A08

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

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

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	A wavemeter
B	An oscilloscope
C	A field strength meter
D	A sidetone monitor

18. - G4C05

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

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

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.1765 MHz to 7.1795 MHz
B	7.175 MHz to 7.178 MHz
C	7.178 MHz to 7.184 MHz
D	7.178 MHz to 7.181 MHz

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To reduce RF voltage discharge from the tip of the antenna while transmitting
B	To narrow the operating bandwidth of the antenna
C	To increase the “Q” of the antenna
D	To reduce the chance of damage if the antenna should strike an object

21. - G5A02

What is reactance?

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

22. - G5B10

What percentage of power loss is equivalent to a loss of 1 dB?

Select	Answer
A	12.2 percent
B	25.9 percent
C	20.6 percent
D	10.9 percent

23. - G5C05

Why is the primary winding wire of a voltage step-up transformer usually a larger size than that of the secondary winding?

Select	Answer
A	To improve the coupling between the primary and secondary
B	To ensure that the volume of the primary winding is equal to the volume of the secondary winding
C	To accommodate the higher current of the primary
D	To prevent parasitic oscillations due to resistive losses in the primary

24. - G6A09

Which of the following describes MOSFET construction?

Select	Answer
A	The source is formed by depositing metal on silicon
B	The source is separated from the drain by a thin insulating layer
C	The gate is formed by a back-biased junction
D	The gate is separated from the channel by a thin insulating layer

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	MMIC
C	Digital
D	Analog

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	Only one diode is required
B	The ripple frequency is twice that of a full-wave rectifier
C	The output voltage is two times the peak input voltage
D	More current can be drawn from the half-wave rectifier

27. - G7B03

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

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

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

Select	Answer
A	To present the desired impedance to the transmitter and feed line
B	To minimize transmitter power output
C	To reduce power supply ripple
D	To minimize radiation resistance

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 conversion
B	Frequency convolution
C	Frequency modulation
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	Balanced converter
B	Mixer
C	Multiplier
D	Reactance modulator

31. - G8C01

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

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

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

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	24 feet
C	16 feet
D	33 feet

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1/4 wavelength
B	1 wavelength
C	3/4 wavelength
D	1/2 wavelength

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	Impedance varies periodically as a function of frequency
B	SWR varies periodically as a function of boom length
C	Gain varies logarithmically as a function of frequency
D	Element length and spacing vary logarithmically along the boom