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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	1855 kHz
B	3650 kHz
C	2560 kHz
D	3560 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 FCC must have declared a state of emergency
C	All of these choices are correct
D	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

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1000 watts PEP output
B	200 watts PEP output
C	1500 watts PEP output
D	1200 watts PEP output

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least three General Class or higher VEs must observe the examination
B	At least three VEs of Technician Class or higher must observe the examination
C	At least two General Class or higher VEs must be present
D	At least two General Class or higher VEs must be present, but only one need be Extra Class

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The station initiating the contact must be under local or remote control
B	No third party traffic maybe be transmitted
C	The control operator of the interrogating station must hold an Extra Class license
D	The interrogating transmission must be made by another automatically controlled station

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Continue your communication because you were on the frequency first
B	Change to a different frequency
C	Immediately cease all transmissions
D	Acknowledge the station in distress and determine what assistance may be needed

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	KN
B	SK
C	AR
D	BK

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
B	You must keep a record of all third party traffic
C	You must keep a record of the manufacturer of your equipment and the antenna used
D	You must keep a record of the date, time, frequency, power level and stations worked

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	In the middle of the CW segment, near 14.100 MHz
B	At the bottom of the slow-scan TV segment, near 14.230 MHz
C	Below the RTTY segment, near 14.070 MHz
D	At the top of the SSB phone segment, near 14.325 MHz

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. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function for communications between two points
B	The Lowest Usable Frequency for communications between two points
C	The Lowest Usable Frequency during a 24 hour period
D	The Longest Universal Function during a 24 hour period

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have a wavering sound
B	They have high intelligibility
C	All of these choices are correct
D	They have very large swings in signal strength

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

15. - G4B15

What type of transmitter performance does a two-tone test analyze?

Select	Answer
A	Percentage of frequency modulation
B	Linearity
C	Percentage of suppression of carrier and undesired sideband for SSB
D	Percentage of carrier phase shift

16. - G4C10

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

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

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

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To allow automatic band changing
B	To electrically lengthen a physically short antenna
C	To allow remote tuning
D	To increase the power handling capacity of a whip antenna

19. - G5A06

How does a capacitor react to AC?

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

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	2.00
C	1.414
D	0.707

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

Select	Answer
A	14.3 millihenrys
B	1000 millihenrys
C	70 millihenrys
D	0.07 millihenrys

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	High stability
B	Tight tolerance
C	High capacitance for given volume
D	Comparatively low cost

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A small threaded connector suitable for signals up to several GHz
B	A connector designed for serial multiple access signals
C	A type of push-on connector intended for high voltage applications
D	A large bayonet connector usable at power levels in excess of 1 KW

24. - G7A02

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

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

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	Any RF power amplifier used in conjunction with an amateur transceiver
C	A Class C high efficiency amplifier
D	An amplifier used as a frequency multiplier

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	Mixer
B	Phase inverter
C	Product detector
D	Discriminator

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	Attenuator level
B	Transmit audio or microphone gain
C	The RF clipping level
D	Antenna inductance or capacitance

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	2300 Hz
B	31.5 Hz
C	1800 Hz
D	500 Hz

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	The number varies
B	7
C	8
D	5

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 characteristic impedance of the line
D	Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	32 feet
B	24 feet
C	16 feet
D	8 feet

32. - G9C13

Approximately how long is each side of the driven element of a quad antenna?

Select	Answer
A	1/4 wavelength
B	3/4 wavelength
C	1 wavelength
D	1/2 wavelength

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	All of these choices are correct
B	Its impedance is too low for effective matching
C	It has poor directivity
D	It has high losses compared to other types of antennas

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	Its power density
B	Its frequency
C	Its duty cycle
D	All of these choices are correct

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