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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	1875 kHz
B	4005 kHz
C	3900 kHz
D	3750 kHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	Never
B	Only when there is no other means of communications readily available
C	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
D	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	There are no requirements other than being able to show a copy of the expired license
B	The applicant must pass the current element 2 exam
C	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
D	They must have a letter from the FCC showing they once held an amateur or commercial license

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	Under no circumstances
B	When under automatic control
C	When messages are encrypted
D	When messages are not encrypted

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband and the carrier are transmitted; the other sideband is suppressed
B	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
C	Only one sideband is transmitted; the other sideband and carrier are suppressed
D	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands

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	Check to see if the channel is assigned to another station
C	Follow the voluntary band plan for the operating mode you intend to use
D	Identify your station by transmitting your call sign at least 3 times

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Key clicks
B	100 percent copy
C	Chirpy or unstable signal
D	Report was read from an S meter rather than estimated

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows true bearings and distances from a particular location
D	A map that shows the angle at which an amateur satellite crosses the equator

10. - G2E03

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

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

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved chances of UHF ducting
B	Degraded high-latitude HF propagation
C	Improved high-latitude HF propagation
D	Improved ground-wave propagation

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C08

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

Select	Answer
A	Propagation is through ground waves which absorb most of the signal energy
B	Signals are scattered from the magnetosphere which is not a good reflector
C	Propagations is through ducts in F region which absorb most of the energy
D	Only a small part of the signal energy is scattered into the skip zone

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Insufficient drive power
B	Excessive drive power
C	Low input SWR
D	Shorting the input signal to ground

15. - G4B03

Which of the following is the best instrument to use when 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

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	Severely distorted audio
B	A chirpy CW signal
C	A CW signal at a nearly pure audio frequency
D	On-and-off humming or clicking

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	All of these choices are correct
B	Distorted speech
C	Excessive background pickup
D	Splatter

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	The voltage and current ratings of such systems are not compatible with amateur equipment
B	All of these choices are correct
C	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
D	A large energy storage system is needed to supply power when the wind is not blowing

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 source delivers minimum power to the load
C	The electrical load is shorted
D	The source can deliver maximum power to the load

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	400 watts
B	1.4 watts
C	353.5 watts
D	100 watts

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	80 ohms
C	0.17 ohms
D	10000 ohms

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Lower capacitance
B	Longer switching times
C	Higher breakdown voltage
D	Lower inductance

23. - G6B16

Which of the following describes a type N connector?

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

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 1
B	Symbol 7
C	Symbol 11
D	Symbol 6

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	No need for bias
B	Low standby power
C	High Efficiency
D	Low distortion

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	All of the these choices are correct
C	A digital processor chip
D	A digital to analog converter

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By keying an FM transmitter with a sub-audible tone
B	By reconfiguring the CW keying input to act as a tone generator
C	By changing an oscillator's frequency directly with a digital control signal
D	By using a transceiver's computer data interface protocol to change frequencies

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By transmitting redundant information with the data
B	By controlling transmitter output power for optimum signal strength
C	By using a parity bit with each character
D	By using the varicode character set

30. - G9A08

If the SWR on an antenna feed line is 5 to 1, and a matching network at the transmitter end of the feed line is adjusted to 1 to 1 SWR, what is the resulting SWR on the feed line?

Select	Answer
A	5 to 1
B	1 to 1
C	Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter
D	Between 1 to 1 and 5 to 1 depending on the characteristic impedance of the line

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

32. - G9C09

How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single 3-element Yagi?

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

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Length and spacing of the elements increase logarithmically from one end of the boom to the other
B	Impedance varies periodically as a function of frequency
C	SWR varies periodically as a function of boom length
D	Gain varies logarithmically as a function of frequency

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It cools body tissue
B	It heats body tissue
C	It causes the blood count to reach a dangerously low level
D	It causes radiation poisoning

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

Figure G7-1