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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The lower frequency end
B	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz
C	The upper frequency end
D	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Automatic identification of repeaters
C	Identifying net frequencies
D	Transmission of bulletins of general interest to Amateur Radio licensees

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D04

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

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

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Countries in ITU Region 1
B	Countries in ITU Region 2
C	Every foreign country, unless there is a third party agreement in effect with that country
D	Any country which is not a member of the International Amateur Radio Union (IARU)

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	Very high fidelity voice modulation
D	Less subject to interference from atmospheric static crashes

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	3 to 6 kHz
B	1 to 3 kHz
C	5 to 50 Hz
D	150 to 500 Hz

8. - G2C06

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

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a particular location
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows accurate land masses

10. - G2E07

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

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

11. - G3A08

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

Select	Answer
A	Improved ground-wave propagation
B	Improved chances of UHF ducting
C	Improved high-latitude HF propagation
D	Degraded high-latitude HF 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	Long skip sky-wave propagation on the 10-meter band
B	Severe attenuation of signals on the 10-meter band
C	Long delayed echoes on the 10-meter band
D	Short skip sky-wave propagation on the 10-meter band

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

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

14. - G4A13

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

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

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better for measuring computer circuits
B	Better precision for most uses
C	Faster response
D	Better for RF measurements

16. - G4C01

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

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

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 20 times less powerful
C	It is 100 times more powerful
D	It is 10 times less powerful

18. - G4E01

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

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Siemens
C	Farad
D	Ampere

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	8.5 volts
B	24 volts
C	12 volts
D	34 volts

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To insure that the volume of the primary winding is equal to the volume of the secondary winding
B	To improve the coupling between the primary and secondary
C	To accommodate the higher current of the primary
D	To prevent parasitic oscillations due to resistive losses in the primary

22. - G6A10

Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?

Select	Answer
A	Trigger electrode
B	Control grid
C	Screen Grid
D	Heater

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for power supply regulation
B	Better suited for RF amplification
C	High power handling capability
D	Low power consumption

24. - G7A07

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

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

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	All of these choices are correct
B	SSB
C	CW
D	AM

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	Discriminator
D	Product detector

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency modulation
C	Frequency transformation
D	Frequency conversion

28. - G8B09

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

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

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	High and Low
D	On and Off

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	2:1
C	1:4
D	1:2

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	11 feet
B	16 feet
C	8 feet
D	21 feet

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It does not require any inductors or capacitors
B	It is useful for matching multiband antennas
C	It does not require that the elements be insulated from the boom
D	All of these choices are correct

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	All of these choices are correct
B	High forward gain
C	High vertical angle radiation for working stations within a radius of a few hundred kilometers
D	Low vertical angle radiation for working stations out to ranges of several thousand kilometers

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Locate the antenna close to your operating position to minimize feed line radiation
B	Position the antenna along the edge of a wall to reduce parasitic radiation
C	Make sure that MPE limits are not exceeded in occupied areas
D	Make sure the antenna is properly shielded

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 16
B	AWG number 20
C	AWG number 8
D	AWG number 12