US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 3
B	All three regions
C	Region 1
D	Region 2

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	200 watts PEP output
B	100 watts PEP output
C	20 watts PEP output
D	10 watts PEP output

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

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

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
B	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
C	Only one sideband is transmitted; the other sideband and carrier are suppressed
D	Only one sideband and the carrier are transmitted; the other sideband is suppressed

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Increase power to overcome interference
B	As a common courtesy, move your contact to another frequency
C	Tell the interfering stations to change frequency
D	Report the interference to your local Amateur Auxiliary Coordinator

8. - G2C08

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

Select	Answer
A	SK
B	AR
C	BK
D	KN

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

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3775 - 3825 kHz
B	3570 - 3600 kHz
C	3700 - 3750 kHz
D	3500 - 3525 kHz

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved high-latitude HF propagation
B	Degraded high-latitude HF propagation
C	Improved chances of UHF ducting
D	Improved ground-wave propagation

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Severe attenuation of signals on the 10-meter band
B	Long delayed echoes on the 10-meter band
C	Long skip sky-wave propagation on the 10-meter band
D	Short skip sky-wave propagation on the 10-meter band

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	Scatter
C	Sporadic-E skip
D	Short-path skip

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	ALC will invert the modulation of the AFSK mode
B	All of these choices are correct
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. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Complex impedances can be easily measured
B	Input impedance is much lower
C	An oscilloscope uses less power
D	Complex waveforms can be measured

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	A ground loop
B	High RF voltages on the enclosures of station equipment
C	Overheating of ground straps
D	Corrosion of the ground rod

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Increase the intelligibility of transmitted phone signals during poor conditions
B	Prevent distortion of voice signals
C	Increase transmitter bass response for more natural sounding SSB signals
D	Decrease high-frequency voice output to prevent out of band operation

18. - G4E01

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

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

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Conductance
B	Reactance
C	Admittance
D	Reluctance

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	245 volts
C	173 volts
D	346 volts

21. - G5C02

What happens if you reverse the primary and secondary windings of a 4:1 voltage step down transformer?

Select	Answer
A	The transformer no longer functions as it is a unidirectional device
B	Additional resistance must be added in parallel with the secondary to prevent overload
C	The secondary voltage becomes 4 times the primary voltage
D	Additional resistance must be added in series with the primary to prevent overload

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The gate is separated from the channel with a thin insulating layer
B	The source is formed by depositing metal on silicon
C	The gate is formed by a back-biased junction
D	The source is separated from the drain by a thin insulating layer

23. - G6B10

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

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

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A steady DC voltage
B	A series of DC pulses at the same frequency as the AC input
C	A series of DC pulses at twice the frequency of the AC input
D	A sine wave at half the frequency of the AC input

25. - G7B05

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

Select	Answer
A	6
B	16
C	3
D	8

26. - G7C09

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

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

27. - G8A09

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

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

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	Some modes have high duty cycles which could exceed the transmitter's average power rating.
C	To allow time for the other station to break in during a transmission
D	To aid in tuning your transmitter

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 5-bit code with additional start and stop bits
B	A 7-bit code with start, stop and parity bits
C	A code using SELCAL and LISTEN
D	A code using error detection and correction

30. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

Select	Answer
A	25 and 30 ohms
B	80 and 100 ohms
C	500 and 750 ohms
D	50 and 75 ohms

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

32. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

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

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Length and spacing of the elements increase logarithmically from one end of the boom to the other
B	Impedance varies periodically as a function of frequency
C	SWR varies periodically as a function of boom length
D	Gain varies logarithmically as a function of frequency

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

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	Solder has too high a dielectric constant to provide adequate lightning protection
B	The resistance of solder is too high
C	Solder flux will prevent a low conductivity connection
D	A soldered joint will likely be destroyed by the heat of a lightning strike