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	7.250 MHz
B	40.200 MHz
C	40.500 MHz
D	7.500 MHz

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The IEEE
B	The FCC
C	The ITU
D	The Control Operator

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years
C	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
D	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC

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 messages are encrypted
C	When under automatic control
D	When messages are not encrypted

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	It allows "hands free" operation
C	The received signal is more natural sounding
D	It occupies less bandwidth

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

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E01

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

Select	Answer
A	CW
B	USB
C	DSB
D	LSB

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Improved HF long path propagation
B	Auroras that can reflect VHF signals
C	Reduced long delayed echoes
D	Higher signal strength for HF signals passing through the polar regions

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

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

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
B	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
C	The long path azimuth of a distant station
D	The short path azimuth of a distant station

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	When using digital modes, too much ALC activity can cause the transmitter to overheat
B	Improper action of ALC distorts the signal and can cause spurious emissions
C	All of these choices are correct
D	ALC will invert the modulation of the AFSK mode

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	Faster response
C	Better for measuring computer circuits
D	Better for RF measurements

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	Mixing products are greatly reduced
B	The DSP filter is much more effective at VHF frequencies
C	Fewer digital components are required
D	A wide range of filter bandwidths and shapes can be created

17. - G4D03

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

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

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. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To maximize the transfer of power
B	To minimize radiation resistance
C	To reduce power supply ripple
D	To minimize transmitter power output

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The reciprocal of the RMS value
B	The peak-to-peak value
C	The RMS value
D	The peak value

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	576.9 nanofarads
C	1733 picofarads
D	3583 picofarads

22. - G6A15

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

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

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Power supply and amplifier
B	Computer and transceiver
C	Amplifier and antenna
D	Microphone and transceiver

24. - G7A12

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

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

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	16
B	3
C	8
D	6

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Discriminator
B	Product detector
C	Phase inverter
D	Mixer

27. - G8A11

What is the modulation envelope of an AM signal?

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

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	3 kHz
B	5 kHz
C	8 kHz
D	16 kHz

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It terminates the contact
B	It requests a change in transmitting protocol
C	It requests the packet be retransmitted
D	It sends the packet back to the transmitting station

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	1:2
B	4:1
C	2:1
D	1:4

31. - G9B12

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

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

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	3 dB lower
B	About the same
C	2.54 dB higher
D	3 dB higher

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Near Vertical Incidence sky-wave
B	Non-Varying Impedance Smoothing
C	Nearly Vertical Inductance System
D	Non-Varying Indicated SWR

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Locate the antenna close to your operating position to minimize feed line radiation
B	Make sure that MPE limits are not exceeded in occupied areas
C	Make sure the antenna is properly shielded
D	Position the antenna along the edge of a wall to reduce parasitic radiation

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	Danger of carbon monoxide poisoning
C	Lack of nitrogen for adequate combustion
D	Lack of oxygen for adequate combustion

Figure G7-1