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

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	All of these choices are correct
B	Monitor the frequency before transmitting
C	Insure that the frequency and mode selected are within your license class privileges
D	Follow generally accepted band plans agreed to by the Amateur Radio community

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	1200 baud
C	56 kilobaud
D	300 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 must hold an FCC granted Amateur Radio license of General Class or above
B	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
C	The person's home citizenship must be in ITU region 2
D	The person must be a resident of the U.S. for a minimum of 5 years

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

6. - G2A09

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

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

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All of these choices are correct
B	Identify your station by transmitting your call sign at least 3 times
C	Follow the voluntary band plan for the operating mode you intend to use
D	Check to see if the channel is assigned to another station

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	An operator must activate a manual send/receive switch before and after every transmission
B	Transmitting stations can receive between code characters and elements
C	Breaking stations send the Morse code prosign BK
D	Automatic keyers are used to send Morse code instead of hand keys

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	All of these choices are correct
B	Date and time of contact
C	Call sign of station contacted and the signal report given
D	Band and/or frequency of the contact

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	LSB
B	CW
C	DSB
D	USB

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	Long-distance communication in the upper HF and lower VHF range is enhanced
B	Frequencies above 300 MHz become usable for long-distance communication
C	Microwave communications become unstable
D	High-frequency radio signals become weak and distorted

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Long skip sky-wave propagation on the 10-meter band
B	Short skip sky-wave propagation on the 10-meter band
C	Severe attenuation of signals on the 10-meter band
D	Long delayed echoes on the 10-meter band

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Short distance MF or HF propagation using high elevation angles
B	Long path HF propagation at sunrise and sunset
C	Propagation near the MUF
D	Double hop propagation near the LUF

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To reduce distortion due to excessive drive
C	To increase overall efficiency
D	To balance the transmitter audio frequency response

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better precision for most uses
B	Better for RF measurements
C	Better for measuring computer circuits
D	Faster response

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To remove noise from received signals
B	To increase antenna gain
C	To provide adequate grounding
D	To increase antenna bandwidth

17. - 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 20 times less powerful
B	It is 20 times more powerful
C	It is 10 times less powerful
D	It is 100 times more powerful

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	All of these choices are correct
B	The fuel delivery system
C	The vehicle control computer
D	The battery charging system

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	No current can flow through the circuit
B	The electrical load is shorted
C	The source delivers minimum power to the load
D	The source can deliver maximum power to the load

20. - G5B04

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

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

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

Select	Answer
A	14.3 millihenrys
B	70 millihenrys
C	0.07 millihenrys
D	1000 millihenrys

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	High discharge current
B	Rapid recharge
C	High voltage
D	Long life

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	It has a wide viewing angle
B	It requires ambient or back lighting
C	All of these choices are correct
D	It offers a wide dynamic range

24. - G7A02

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

Select	Answer
A	Capacitors and inductors
B	Transformers and transducers
C	Quartz crystals
D	Diodes

25. - G7B02

Which of the following is an advantage of using the binary system when processing digital signals?

Select	Answer
A	The binary number system is most accurate
B	Binary numbers are more compatible with analog circuitry
C	All of these choices are correct
D	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state

26. - G7C10

How is Digital Signal Processor filtering accomplished?

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

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Amplitude modulation
C	Pulse modulation
D	Multiplex modulation

28. - 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	Multiplier
B	Pre-emphasis network
C	Reactance modulator
D	Mixer

29. - G8C01

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

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

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	Feeding the antenna with unbalanced feed line
B	Operating an antenna at its resonant frequency
C	Using more transmitter power than the antenna can handle
D	A difference between feed line impedance and antenna feed point impedance

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Shorten the radials
B	Slope the radials downward
C	Slope the radials upward
D	Lengthen the radials

32. - G9C02

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

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

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A very long and low directional receiving antenna
B	A vertical antenna
C	A helical antenna for space reception
D	A broad-band mobile antenna

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	Secure written permission from your neighbors to operate above the controlled MPE limits
B	All of these choices are correct
C	Take action to prevent human exposure to the excessive RF fields
D	File an Environmental Impact Statement (EIS-97) with the FCC

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of engine over torque
B	Lack of nitrogen for adequate combustion
C	Danger of carbon monoxide poisoning
D	Lack of oxygen for adequate combustion