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. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	All of these choices are correct
B	28.350 MHz
C	28.550 MHz
D	28.020 MHz

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	All of these choices are correct
C	The FCC must have declared a state of emergency
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. - G1C08

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

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Extra, General and Technician
B	Technician only
C	General only
D	General and Technician

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	The foreign amateur station must be in a country with which the United States has a third party agreement
B	The control operator must have at least a General Class license
C	Information must be exchanged in English
D	All of these choices are correct

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Ease of tuning on receive and immunity to impulse noise
B	Less bandwidth used and greater power efficiency
C	Less subject to interference from atmospheric static crashes
D	Very high fidelity voice modulation

7. - G2B07

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

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

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Sending without error
B	Matching the speed of the transmitting station
C	Operating split to avoid interference on frequency
D	Matching your transmit frequency to the frequency of a received signal

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the foreign country is a member of the International Amateur Radio Union
B	When the contact is with amateurs in any country as long as the communication is conducted in English
C	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
D	Only when the foreign country has a formal third party agreement filed with the FCC

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	ARES
B	RTTY
C	Skywarn
D	Winlink

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At the summer solstice
B	Only at the minimum point of the solar cycle
C	Only at the maximum point of the solar cycle
D	At any point in the solar cycle

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Propagation over the path on all HF frequencies is enhanced
B	Double hop propagation along the path is more common
C	No HF radio frequency will support ordinary sky-wave communications over the path
D	HF communications over the path are enhanced

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagation is through ground waves which absorb most of the signal energy
B	Propagations is through ducts in F region which absorb most of the energy
C	Signals are scattered from the magnetosphere which is not a good reflector
D	Only a small part of the signal energy is scattered into the skip zone

14. - G4A12

Which of the following is a common use for the dual VFO feature on a transceiver?

Select	Answer
A	To permit monitoring of two different frequencies
B	To facilitate computer interface
C	To permit full duplex operation, that is transmitting and receiving at the same time
D	To allow transmitting on two frequencies at once

15. - G4B07

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

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

16. - G4C01

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

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

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Received signal strength
C	Conductance
D	Impedance

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode prevents self-discharge of the battery though the panel during times of low or no illumination
B	The diode limits the current flowing from the panel to a safe value
C	The diode greatly increases the efficiency during times of high illumination
D	The diode serves to regulate the charging voltage to prevent overcharge

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	No current can flow through the circuit
B	The source delivers minimum power to the load
C	The electrical load is shorted
D	The source can deliver maximum power to the load

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It equals the average of each branch current
B	It is the sum of the reciprocal of each individual voltage drop
C	It decreases as more parallel branches are added to the circuit
D	It equals the sum of the currents through each branch

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	22 nF
B	0.22 nF
C	2.2 nF
D	220 nF

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A bipolar transistor
B	A field effect transistor
C	A varistor
D	A tunnel diode

23. - G6B15

What is the main reason to use keyed connectors instead of non-keyed types?

Select	Answer
A	All of these choices are correct
B	Prevention of use by unauthorized persons
C	Higher current carrying capacity
D	Reduced chance of incorrect mating

24. - G7A12

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

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

25. - G7B05

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

Select	Answer
A	6
B	16
C	8
D	3

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Mixer
B	IF amplifier
C	Detector
D	Balanced modulator

27. - G8A02

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

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

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	All of these choices are correct
B	To allow time for the other station to break in during a transmission
C	To aid in tuning your transmitter
D	Some modes have high duty cycles which could exceed the transmitter's average power rating.

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The version of the PSK protocol
B	The number of characters that can be represented by PSK31
C	The approximate transmitted symbol rate
D	The year in which PSK31 was invented

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	4:1
B	1:4
C	2:1
D	1:2

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	Antenna height has no effect on the pattern
B	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
C	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
D	If the antenna is too high, the pattern becomes unpredictable

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
B	dBi gain figures are 2.15 dB higher than dBd gain figures
C	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
D	dBi gain figures are 2.15 dB lower then dBd gain figures

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Polarization diversity
B	Wide bandwidth
C	Higher gain per element than a Yagi antenna
D	Harmonic suppression

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

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	The generator should be located in a well-ventilated area
C	All of these choices are correct
D	The generator must be insulated from ground

Figure G7-1