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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	All commercial stations; amateur radio stations are exempt
B	Only stations with antennas lower than one wavelength above the ground
C	All stations with a time-averaged transmission of more than one milliwatt
D	Only stations transmitting more than 500 watts PEP

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. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	60 meters, 30 meters, 17 meters, and 12 meters
B	80 meters, 40 meters, 20 meters, and 15 meters
C	160 meters, 60 meters, 15 meters, and 12 meters
D	80 meters, 20 meters, 15 meters, and 10 meters

4. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	100 watts PEP output
B	10 watts PEP output
C	200 watts PEP output
D	20 watts PEP output

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	An effective radiated power equivalent to 100 watts from a half-wave dipole
B	200 watts PEP output
C	1500 watts PEP output
D	50 watts PEP output

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	General and Technician
B	None, only Amateur Extra class licensees may be accredited
C	Technician only
D	Amateur Extra, General, and Technician

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

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
B	Listen for 2 minutes before calling CQ
C	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
D	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

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

11. - G2D10

What is QRP operation?

Select	Answer
A	Transmission using Quick Response Protocol
B	Low-power transmit operation
C	Remote piloted model control
D	Traffic relay procedure net operation

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	A wireless network capable of both VHF and HF band operation
B	A form of Packet Radio
C	All of the above
D	An amateur radio wireless network to send and receive email on the internet

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the minimum point
B	At the summer solstice
C	At any point
D	Only at the maximum point

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the MUF
B	Just above the LUF
C	Just above the critical frequency
D	Just below the critical frequency

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

Select	Answer
A	The F2 region
B	The E region
C	The F1 region
D	The D region

16. - G4A04

What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?

Select	Answer
A	A pronounced dip
B	A slow, rhythmic oscillation
C	No change will be observed
D	A pronounced peak

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The attenuated RF output of the transmitter
B	The transmitter balanced mixer output
C	The local oscillator of the transmitter
D	An external RF oscillator

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

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

19. - G4D10

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz below the edge of the segment
B	At least 3 kHz above the edge of the segment
C	At least 1 kHz above the edge of the segment
D	At least 1 kHz below the edge of the segment

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

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	B
B	Z
C	Y
D	X

22. - G5B04

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

Select	Answer
A	24 watts
B	2.4 watts
C	60 watts
D	6 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	30 millihenries
D	0.30 henries

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

Select	Answer
A	Much less leakage than any other type
B	High capacitance for a given volume
C	Inexpensive RF capacitor
D	Tight tolerance

25. - G6B04

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

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

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	All these choices are correct
C	Capacitors and inductors
D	Transformers and transducers

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

Select	Answer
A	50%
B	Less than 50%
C	100%
D	More than 50% but less than 100%

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	The DSP filter is much more effective at VHF frequencies
B	Mixing products are greatly reduced
C	A wide range of filter bandwidths and shapes can be created
D	Fewer digital components are required

29. - G8A14

What is link margin?

Select	Answer
A	Receiver sensitivity plus 3 dB
B	The difference between received power level and minimum required signal level at the input to the receiver
C	The opposite of fade margin
D	Transmit power minus receiver sensitivity

30. - G8B12

What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

Select	Answer
A	Detection
B	Rolloff
C	Heterodyning
D	Intermodulation

31. - G8C09

Which is true of mesh network microwave nodes?

Select	Answer
A	Links between two nodes in a network may have different frequencies and bandwidths
B	More nodes reduce overall microwave out of band interference
C	Having more nodes increases signal strengths
D	If one node fails, a packet may still reach its target station via an alternate node

32. - G9A11

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

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

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

Select	Answer
A	It must be longer than 1 wavelength
B	It produces only vertically polarized radiation
C	Station equipment may carry significant RF current
D	It is more effective on the lower HF bands than on the higher bands

34. - G9C09

In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

Select	Answer
A	Approximately 6 dB higher
B	Approximately 3 dB higher
C	Approximately 9 dB higher
D	Approximately 1.5 dB higher

35. - G9D12

What is the common name of a dipole with a single central support?

Select	Answer
A	Sloper
B	Lazy H
C	Inverted V
D	Inverted L