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. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

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

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	When it is unintentionally transmitted from the background at the transmitter
B	When it is an incidental part of a manned space craft retransmission
C	At any time, as long as it produces no spurious emissions
D	When it is transmitted on frequencies above 1215 MHz

3. - G1C08

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

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

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	Whenever you operate on any amateur frequency
B	Whenever you operate using General Class frequency privileges
C	Whenever you operate using Technician frequency privileges
D	A special identifier is not required as long as your General Class license application has been filed with the FCC

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference
B	Both repeater licensees share equal responsibility to resolve the interference
C	The frequency coordinator bears primary responsibility to resolve the interference
D	The licensee of the coordinated repeater has primary responsibility to resolve the interference

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When the President's War Emergency Powers have been invoked
B	Only when all amateur stations are instructed to stop transmitting
C	When they seize your equipment for use in disaster communications
D	When they declare a temporary state of communication emergency

8. - G2C01

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

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

9. - G2D10

What is QRP operation?

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

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	Skywarn
B	Winlink
C	RTTY
D	ARES

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	Microwave communications become unstable
C	High-frequency radio signals become weak and distorted
D	Frequencies above 300 MHz become usable for long-distance communication

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	The signal might be cancelled causing severe attenuation
B	Signal strength increased by 3 dB
C	Periodic fading approximately every 10 seconds
D	A well-defined echo might be heard

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Energy is scattered into the skip zone through several different radio wave paths
B	The ionospheric layer involved is unstable
C	The E-region is not present
D	Ground waves are absorbing much of the signal

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Minimum plate current without exceeding maximum allowable grid current
B	Minimum SWR on the antenna
C	Highest plate voltage while minimizing grid current
D	Maximum power output without exceeding maximum allowable plate current

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Strong signals from nearby transmitters can affect the accuracy of measurements
B	Permanent damage to the analyzer may occur if it is operated into a high SWR
C	The analyzer can be damaged if measurements outside the ham bands are attempted
D	Connecting the analyzer to an antenna can cause it to absorb harmonics

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding an additional insulating jacket to the cable
B	Adding shunt inductors to the conductors
C	Adding series capacitors to the conductors
D	Placing a ferrite choke around the cable

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 1 kHz below the edge of the segment
B	At least 3 kHz above the edge of the band
C	Your displayed carrier frequency may be set at the edge of the band
D	At least 3 kHz below the edge of the band

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To increase the "Q" of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the amplitude of the applied AC increases, the reactance decreases

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 3 dB
B	Approximately 2 dB
C	Approximately 6 dB
D	Approximately 12 dB

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To accommodate the higher current of the primary
B	To improve the coupling between the primary and secondary
C	To prevent parasitic oscillations due to resistive losses in the primary
D	To insure that the volume of the primary winding is equal to the volume of the secondary winding

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

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

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for power supply regulation
B	High power handling capability
C	Low power consumption
D	Better suited for RF amplification

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 1
B	Symbol 4
C	Symbol 5
D	Symbol 2

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the RF output power by the DC input power
B	Multiply the RF input power by the reciprocal of the RF output power
C	Add the RF input power to the DC output power
D	Divide the DC input power by the DC output power

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio that provides computer interface for automatic logging of band and frequency
B	A radio that uses crystal filters designed using software
C	A radio in which most major signal processing functions are performed by software
D	A computer model that can simulate performance of a radio to aid in the design process

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The carrier frequency that contains the signal
B	Spurious signals that envelop nearby frequencies
C	The waveform created by connecting the peak values of the modulated signal
D	The bandwidth of the modulated signal

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	Reactance modulator
B	Pre-emphasis network
C	Mixer
D	Multiplier

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The receiver is requesting the packet be retransmitted
B	The receiver is busy decoding the packet
C	The receiver is reporting the packet was received without error
D	The entire file has been received correctly

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 1000 feet
B	Ohms per 100 feet
C	Ohms per 1000 feet
D	Decibels per 100 feet

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It stays the same
B	It increases
C	It decreases
D	It reaches a maximum at an angle of 45 degrees

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Loading coils in series with the element
B	Tapered-diameter elements
C	Larger diameter elements
D	Closer element spacing

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Portable direction finding at lower HF frequencies
B	Directional receiving for low HF bands
C	Portable direction finding at higher HF frequencies
D	Directional transmitting for low HF bands

34. - G0A01

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

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

35. - G0B12

What is the purpose of a power supply interlock?

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

Figure G7-1