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. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	7.500 MHz
B	40.500 MHz
C	7.250 MHz
D	40.200 MHz

2. - G1B09

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

Select	Answer
A	Only when there is no other means of communications readily available
B	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
C	Never
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. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

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	They must have a letter from the FCC showing they once held an amateur or commercial license
B	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
C	There are no requirements other than being able to show a copy of the expired license
D	The applicant must pass the current element 2 exam

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When operating within one mile of an FCC Monitoring Station
B	All of these choices are correct
C	When using a band where the Amateur Service is secondary
D	When a station is transmitting spread spectrum emissions

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

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

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 3 kHz
B	Approximately 6 kHz
C	Between 150 and 500 Hz
D	Approximately 10 kHz

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening for novice stations
B	Closing station now
C	Operating full break-in
D	Listening only for a specific station or stations

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who conduct amateur licensing examinations
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

10. - G2E06

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

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

11. - G3A12

What does the K-index indicate?

Select	Answer
A	The short term stability of the Earth's magnetic field
B	The relative position of sunspots on the surface of the Sun
C	The stability of the Sun's magnetic field
D	The solar radio flux at Boulder, Colorado

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Minimum Usable Frequency for communications between two points
B	The Maximum Usable Frequency during a 24 hour period
C	The Minimum Usable Frequency during a 24 hour period
D	The Maximum Usable Frequency for communications between two points

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	All of these choices are correct
B	Because it does not absorb radio waves as much as other ionospheric regions
C	Because it is the highest ionospheric region
D	Because it is the densest ionospheric layer

14. - G4A07

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

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

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All of these choices are correct
B	Receiver
C	Transmitter
D	Antenna and feed line

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	You receive reports of "hum" on your station's transmitted signal
B	You receive reports of harmonic interference from your station
C	The SWR reading for one or more antennas is suddenly very high
D	An item of station equipment starts to draw excessive amounts of current

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Received signal strength
C	Conductance
D	Impedance

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode serves to regulate the charging voltage to prevent overcharge
B	The diode limits the current flowing from the panel to a safe value
C	The diode prevents self-discharge of the battery though the panel during times of low or no illumination
D	The diode greatly increases the efficiency during times of high illumination

19. - G5A08

Why is impedance matching important?

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

20. - G5B12

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

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

21. - G5C07

What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Select	Answer
A	300 to 1
B	24.4 to 1
C	150 to 1
D	12.2 to 1

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

23. - G6B04

What is meant by the term ROM?

Select	Answer
A	Resistor Operated Memory
B	Resistant to Overload Memory
C	Read Only Memory
D	Random Operational Memory

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 6
B	Symbol 1
C	Symbol 4
D	Symbol 7

25. - 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 high only when both inputs are high
D	Output is low when either or both inputs are high

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Balanced modulator
B	IF amplifier
C	Mixer
D	Detector

27. - G8A08

Which of the following is an effect of overmodulation?

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

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	Discriminator
B	BFO
C	VFO
D	Mixer

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Dot and Dash
B	On and Off
C	Mark and Space
D	High and Low

30. - G9A15

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

Select	Answer
A	The higher the transmission line loss, the more accurate the SWR measurement will be
B	The higher the transmission line loss, the more the SWR will read artificially low
C	The higher the transmission line loss, the more the SWR will read artificially high
D	Transmission line loss does not affect the SWR measurement

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	16 feet
B	21 feet
C	8 feet
D	11 feet

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna
B	dBi refers to an isotropic antenna, dBd refers to a dipole antenna
C	dBi refers to an isometric antenna, dBd refers to a discone antenna
D	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna

33. - G9D07

Which of the following describes a log periodic antenna?

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

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should be installed such that it is protected against unauthorized access
B	It should not be installed in a wet area
C	It should limited to 10 feet in height
D	It should not be installed higher than you can reach

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	All wires
B	Only the two wires carrying voltage
C	Only the ground wire
D	Only the neutral wire

Figure G7-1