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. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

Select	Answer
A	160, 30, 17, 15, 12, and 10 meters
B	160, 80, 40, and 10 meters
C	60, 20, 17, and 12 meters
D	160, 60, 30, 17, 12, and 10 meters

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The FCC
B	The Control Operator
C	The IEEE
D	The ITU

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	1.8 kHz
C	2.8 kHz
D	3 kHz

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment except 30-meters and 60-meters
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	On any General or Technician Class band segment
D	Only on the Technician band segments until your license arrives in the mail

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

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is listening for a station in Germany
B	A general call for any station
C	A distress call
D	The caller is looking for any station outside their own country

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	150 to 500 Hz
D	5 to 50 Hz

8. - G2C08

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

Select	Answer
A	KN
B	AR
C	BK
D	SK

9. - G2D06

How is a directional antenna pointed when making a "long-path" contact with another station?

Select	Answer
A	Toward the rising Sun
B	Toward the north
C	180 degrees from its short-path heading
D	Along the gray line

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Put the modem or controller in a mode which allows monitoring communications without a connection
C	Transmit UI packets several times and wait to see if there is a response from another PACTOR station
D	Send the message: "Is this frequency in use?"

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	A zero sunspot number indicate radio propagation is not possible on any band
B	All of these choices are correct.
C	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
D	Lower sunspot numbers generally indicate greater probability of sporadic E propagation

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

Select	Answer
A	2,500 miles
B	1,200 miles
C	180 miles
D	12,000 miles

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	Because it is the densest ionospheric layer
B	Because it is the highest ionospheric region
C	Because it does not absorb radio waves as much as other ionospheric regions
D	All of these choices are correct

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To increase overall efficiency
C	To balance the transmitter audio frequency response
D	To reduce distortion due to excessive drive

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The presence and amount of amplitude distortion of a transmitter
B	The radiation pattern of an antenna
C	The presence and amount of phase distortion of a transmitter
D	The radiation resistance of an antenna

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To provide adequate grounding
B	To remove noise from received signals
C	To increase antenna bandwidth
D	To increase antenna gain

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

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

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Short antennas can only receive circularly polarized signals
B	Harmonic radiation may increase
C	Operating bandwidth may be very limited
D	Short antennas are more likely to cause distortion of transmitted signals

19. - G5A01

What is impedance?

Select	Answer
A	The electric charge stored by a capacitor
B	The opposition to the flow of current in an AC circuit
C	The force of repulsion between two similar electric fields
D	The inverse of resistance

20. - G5B11

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

Select	Answer
A	2.00
B	0.707
C	1.00
D	1.414

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

Select	Answer
A	33.3 microfarads
B	0.30 microfarads
C	300 microfarads
D	0.33 microfarads

22. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	The magnetic properties of the core may be optimized for a specific range of frequencies
B	Most of the magnetic field is contained in the core
C	All of these choices are correct
D	Large values of inductance may be obtained

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	DE-9
B	Type SMA
C	Type N
D	PL-259

24. - G7A07

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

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

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class B
C	Class C
D	Class AB

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	Detector
C	IF amplifier
D	Balanced modulator

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	The transmitter's automatic level control (ALC) is properly adjusted
B	The transmitter's carrier is properly suppressed
C	Signal distortion caused by excessive drive
D	Signal distortion caused by insufficient collector current

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Phase inverting
B	Heterodyning
C	Cancellation
D	Synthesizing

29. - G8C09

What does the number 31 represent in "PSK31"?

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

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

31. - G9B12

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

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

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About the same
B	About twice as much
C	About 2/3 as much
D	About 1.5 times as much

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be fed with open wire line
B	They have poor harmonic rejection
C	They must be used with an antenna tuner
D	They present low impedance on all design frequencies

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The total RF exposure averaged over a certain time
C	The average time it takes RF radiation to have any long-term effect on the body
D	The average amount of power developed by the transmitter over a specific 24 hour period

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 8
C	AWG number 20
D	AWG number 12