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	14305 kHz
B	14005 kHz
C	14405 kHz
D	14105 kHz

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	50 feet
B	200 feet
C	300 feet
D	100 feet

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	200 watts PEP output
B	50 watts PEP output
C	An effective radiated power equivalent to 100 watts from a half-wave dipole
D	1500 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 two General Class or higher VEs must be present, but only one need be Extra Class
C	At least two General Class or higher VEs must be present
D	At least three VEs of Technician Class or higher must observe the examination

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	English, Spanish, French, or German
B	Any language recognized by the United Nations
C	The language being used for the contact
D	English only

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Frequency modulation
B	Single sideband
C	Phase modulation
D	Double sideband

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Check to see if the channel is assigned to another station
B	Identify your station by transmitting your call sign at least 3 times
C	Follow the voluntary band plan for the operating mode you intend to use
D	All of these choices are correct

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you operating full break-in" or "Can you operate full break-in?"
B	"Will you keep the frequency clear?"
C	"Are you busy?", or "Is this frequency in use?"
D	"Are you listening only for a specific station?"

9. - G2D07

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

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

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Send QRL in Morse code
B	Transmit a connect message on the station's published frequency
C	Send an email to the system control operator
D	Respond when the station broadcasts its SSID

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is improved
B	VHF/UHF ducting is disturbed
C	HF communications are disturbed
D	HF communications are improved

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Time of day and season
B	Path distance and location
C	Solar radiation and ionospheric disturbances
D	All of these choices are correct

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

Select	Answer
A	The D layer
B	The E layer
C	The F2 layer
D	The F1 layer

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce power consumption when operating from batteries
B	To reduce the transmitter power when driving a linear amplifier
C	To slow down received CW signals for better copy
D	To reduce signal overload due to strong incoming signals

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	A signal generator
B	An ohmmeter
C	An oscilloscope
D	An ammeter

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Connect the AC neutral conductor to the ground wire
B	Connect all ground conductors to a single point
C	Avoid using lock washers and star washers when making ground connections
D	Connect all ground conductors in series

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.1765 to 7.1795 MHz
B	7.178 to 7.181 MHz
C	7.175 to 7.178 MHz
D	7.178 to 7.184 MHz

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the battery using resistor wire
B	To the alternator or generator using resistor wire
C	To the battery using heavy gauge wire
D	To the alternator or generator using heavy gauge wire

19. - G5A12

What is one reason to use an impedance matching transformer?

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

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 RMS value
C	The peak-to-peak value
D	The peak value

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	150 to 1
C	24.4 to 1
D	12.2 to 1

22. - G6A13

Why is the polarity of applied voltages important for polarized capacitors?

Select	Answer
A	The capacitor could overheat and explode
B	Reverse voltages can destroy the dielectric layer of an electrolytic capacitor
C	Incorrect polarity can cause the capacitor to short-circuit
D	All of these choices are correct

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A special connector for microwave interfacing
B	A family of multiple circuit connectors suitable for audio and control signals
C	A special watertight connector for use in marine applications
D	A DC power connector rated for currents between 30 and 50 amperes

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	270 degrees
B	360 degrees
C	180 degrees
D	90 degrees

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	No need for bias
B	High Efficiency
C	Low standby power
D	Low distortion

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	A digital to analog converter
C	All of the these choices are correct
D	A digital processor chip

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Amplitude modulation
C	Pulse modulation
D	Multiplex modulation

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. - G8C11

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

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

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	5:1
B	2:1
C	1:5
D	50:1

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	8 feet
C	16 feet
D	24 feet

32. - G9C03

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The driven element is the longest element
B	The director is normally the shortest element
C	Low feed point impedance increases bandwidth
D	The reflector is normally the shortest element

33. - G9D09

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

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

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 duty cycle
C	All of these choices are correct
D	Its frequency

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	All of these choices are correct
B	Disconnect the incoming utility power feed
C	Insure that all lightning grounds are disconnected
D	Insure that the generator is not grounded