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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14005 kHz
B	14105 kHz
C	14305 kHz
D	14405 kHz

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
B	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
C	The FCC must have declared a state of emergency
D	All of these choices are correct

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	2000 watts PEP output
B	1000 watts PEP output
C	1500 watts PEP output
D	200 watts PEP output

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	A Volunteer Examiner Coordinator
B	The Universal Licensing System
C	The Federal Communications Commission
D	The Wireless Telecommunications Bureau

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

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	Upper sideband
B	Lower sideband
C	Double sideband
D	Vestigial sideband

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	Only when transmitting in RACES
B	Only on authorized HF frequencies
C	At any time during an actual emergency
D	At any time when transmitting in an organized net

8. - G2C03

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

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

9. - G2D09

What information is traditionally contained in a station log?

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

10. - G2E01

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

Select	Answer
A	CW
B	DSB
C	LSB
D	USB

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	11 years
B	28 days
C	40 hours
D	8 minutes

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum 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 Minimum Usable Frequency for communications between two points

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Faraday rotation
B	Sporadic-E skip
C	Short-path skip
D	Scatter

14. - G4A05

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

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

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two swept frequency tones
B	Two audio signals of the same frequency shifted 90 degrees
C	Two audio frequency range square wave signals of equal amplitude
D	Two non-harmonically related audio signals

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Forward-biased diode
B	Bypass capacitor
C	Reverse-biased diode
D	Bypass inductor

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

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

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ampere
B	Siemens
C	Farad
D	Ohm

20. - G5B03

How many watts of electrical power are used if 400 VDC is supplied to an 800 ohm load?

Select	Answer
A	3200 watts
B	200 watts
C	0.5 watts
D	400 watts

21. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	A resistor in parallel
B	An inductor in series
C	A capacitor in series
D	An inductor in parallel

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	When the cell is kept warm during the recharging period
B	As long as the voltage has not been allowed to drop below 1.0 volt
C	Never
D	When a constant current charger is used

23. - G6B11

What is a microprocessor?

Select	Answer
A	A microwave detector, amplifier, and local oscillator on a single integrated circuit
B	A low voltage amplifier used in a microwave transmitter modulator stage
C	A low power analog signal processor used as a microwave detector
D	A computer on a single integrated circuit

24. - G7A02

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

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

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is high only when both inputs are high
C	Output is high when either or both inputs are low
D	Output is low when either or both inputs are high

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. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Angle convolution
B	Phase modulation
C	Phase convolution
D	Radian inversion

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It results in the best signal to noise ratio
B	It improves impedance matching of the antenna
C	It is required by FCC rules
D	It minimizes power consumption in the receiver

29. - G8C01

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

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

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	2:1
B	1.25:1
C	You cannot determine SWR from impedance values
D	2.5:1

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

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The reflector element must be approximately 5 percent longer than the driven element
B	There must be an open circuit in the driven element at the point opposite the feed point
C	The reflector element must be approximately 5 percent shorter than the driven element
D	The driven element must be fed with a balun transformer

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be fed with open wire line
B	They must be used with an antenna tuner
C	They present low impedance on all design frequencies
D	They have poor harmonic rejection

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	Post a copy of OET Bulletin 65 in the station
B	Perform a routine RF exposure evaluation
C	Post a copy of FCC Part 97.13 in the station
D	All of these choices are correct

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 12
B	AWG number 8
C	AWG number 20
D	AWG number 16