US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A11

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

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

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
B	The FCC must have declared a state of emergency
C	All of these choices are correct
D	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	19.6 kilobaud
B	300 baud
C	56 kilobaud
D	1200 baud

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person's home citizenship must be in ITU region 2
B	The person must be a resident of the U.S. for a minimum of 5 years
C	The person must hold an FCC granted Amateur Radio license of General Class or above
D	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	All of these choices are correct
B	Information must be exchanged in English
C	The control operator must have at least a General Class license
D	The foreign amateur station must be in a country with which the United States has a third party agreement

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - G2B06

What is a practical way to 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 and listen for a response
B	Listen for 2 minutes before calling CQ
C	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
D	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Will you keep the frequency clear?"
B	"Are you busy?", or "Is this frequency in use?"
C	"Are you listening only for a specific station?"
D	"Are you operating full break-in" or "Can you operate full break-in?"

9. - G2D07

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

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Failure to establish a connection between stations
B	Frequent retries or timeouts
C	All of these choices are correct
D	Long pauses in message transmission

11. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth
B	A measure of solar radiation at 10.7 centimeters wavelength
C	A count of sunspots which is adjusted for solar emissions
D	Another name for the American sunspot number

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are bent and trapped in the ionosphere to circle the Earth
B	They pass through the ionosphere
C	They are bent back to the Earth
D	They are completely absorbed by the ionosphere

13. - G3C11

Which of the following antenna types will be most effective for skip communications on 40-meters during the day?

Select	Answer
A	A vertical antenna
B	A left-hand circularly polarized antenna
C	A right-hand circularly polarized antenna
D	A horizontal dipole placed between 1/8 and 1/4 wavelength above the ground

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To permit listening on a different frequency from that on which you are transmitting
B	To tune in stations that are slightly off frequency without changing your transmit frequency
C	To avoid interference from stations very close to the receive frequency
D	To change frequency rapidly

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two swept frequency tones
C	Two audio signals of the same frequency shifted 90 degrees
D	Two audio frequency range square wave signals of equal amplitude

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	High RF voltages on the enclosures of station equipment
B	Overheating of ground straps
C	A ground loop
D	Corrosion of the ground rod

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It increases average power
B	It reduces harmonic distortion
C	It increases peak power
D	It reduces intermodulation distortion

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.02 VDC
B	0.5 VDC
C	0.2 VDC
D	1.38 VDC

19. - G5A08

Why is impedance matching important?

Select	Answer
A	So the source can deliver maximum power to the load
B	To ensure that the resistance and reactance in the circuit are equal
C	To ensure that there is less resistance than reactance in the circuit
D	So the load will draw minimum power from the source

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	346 volts
C	245 volts
D	173 volts

21. - G5C05

If three equal value resistors in series produce 450 ohms, what is the value of each resistor?

Select	Answer
A	90 ohms
B	150 ohms
C	175 ohms
D	1500 ohms

22. - G6A03

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

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

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	An audio connector used in surround-sound installations
B	A small bayonet connector used for data circuits
C	A threaded connector used for hydraulic systems
D	A moisture-resistant RF connector useful to 10 GHz

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 4
B	Symbol 11
C	Symbol 1
D	Symbol 5

25. - G7B11

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

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By converting the signal from analog to digital and using digital processing
B	By differential spurious phasing
C	By using direct signal phasing
D	By converting the signal from digital to analog and taking the difference of mixing products

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient bandwidth
B	Excessive bandwidth
C	Frequency drift
D	Insufficient audio

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Symbol rate and bandwidth are not related
B	Bandwidth is always half the symbol rate
C	Higher symbol rates require wider bandwidth
D	Lower symbol rates require wider bandwidth

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	JT9 and JT65
B	RTTY
C	Clover
D	FSK441 and Hellschreiber

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	2:1
B	1:5
C	5:1
D	50:1

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It peaks at about 1/8 wavelength above ground
B	It steadily decreases
C	It is unaffected by the height above ground
D	It steadily increases

32. - G9C15

Approximately how long is each side of the reflector element of a quad antenna?

Select	Answer
A	Slightly less than 1/4 wavelength
B	Slightly more than 1/4 wavelength
C	Slightly more than 1/2 wavelength
D	Slightly less than 1/2 wavelength

33. - G9D05

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

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

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	A receiver with an S meter
B	An oscilloscope with a high-stability crystal marker generator
C	A calibrated field strength meter with a calibrated antenna
D	An SWR meter with a peak-reading function

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut off the power supply if too much voltage is produced
B	To shut down the unit if it becomes too hot
C	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
D	To ensure that dangerous voltages are removed if the cabinet is opened

Figure G7-1