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. - G1A09

Which of the following frequencies is within the General Class portion of the 15-meter band?

Select	Answer
A	18155 kHz
B	21300 kHz
C	24900 kHz
D	14250 kHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	To control a space station
B	Only when the information is of a routine, personal nature
C	Only with Special Temporary Authorization from the FCC
D	During a declared communications emergency

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Only the minimum power necessary to carry out the desired communications should be used
B	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Effective radiated power cannot exceed 1500 watts

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

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	The received signal is more natural sounding
C	It occupies less bandwidth
D	It allows "hands free" operation

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. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign BK
B	An operator must activate a manual send/receive switch before and after every transmission
C	Automatic keyers are used to send Morse code instead of hand keys
D	Transmitting stations can receive between code characters and elements

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

Select	Answer
A	To encourage self-regulation and compliance with the rules by radio amateur operators
B	To coordinate repeaters for efficient and orderly spectrum usage
C	To provide emergency and public safety communications
D	To conduct efficient and orderly amateur licensing examinations

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.070 - 14.100 MHz
B	14.275 - 14.350 MHz
C	14.000 - 14.050 MHz
D	14.150 - 14.225 MHz

11. - G3A14

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

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

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C08

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

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

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	Frequent connection timeouts
B	The transmitter signal is distorted
C	All of these choices are correct
D	The VOX circuit does not un-key the transmitter

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Receiver
B	Transmitter
C	All of these choices are correct
D	Antenna and feed line

16. - G4C06

What effect can be caused by a resonant ground connection?

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

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 to 14.350 MHz
B	14.344 to 14.347 MHz
C	14.3455 to 14.3485 MHz
D	14.347 to 14.647 MHz

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	All of these choices are correct
B	The voltage and current ratings of such systems are not compatible with amateur equipment
C	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
D	A large energy storage system is needed to supply power when the wind is not blowing

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Watt
C	Ampere
D	Ohm

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 11 watts
B	Approximately 61 watts
C	Approximately 61 milliwatts
D	Approximately 11 milliwatts

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

Select	Answer
A	A resistor in parallel
B	A capacitor in series
C	A resistor in series
D	A capacitor in parallel

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	High discharge current
B	Long life
C	High voltage
D	Rapid recharge

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Digital
B	Programmable Logic
C	MMIC
D	Analog

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 1
B	Symbol 5
C	Symbol 2
D	Symbol 4

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Multiply the RF input power by the reciprocal of the RF output power
B	Divide the RF output power by the DC input power
C	Divide the DC input power by the DC output power
D	Add the RF input power to the DC output power

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

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

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The bandwidth of the modulated signal
B	The waveform created by connecting the peak values of the modulated signal
C	Spurious signals that envelop nearby frequencies
D	The carrier frequency that contains the signal

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	500 Hz
B	1800 Hz
C	2300 Hz
D	31.5 Hz

29. - G8C11

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

Select	Answer
A	On and Off
B	Dot and Dash
C	Mark and Space
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	1:5
C	2:1
D	50:1

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It produces only vertically polarized radiation
B	You may experience RF burns when touching metal objects in your station
C	It must be longer than 1 wavelength
D	It is more effective on the lower HF bands than on the higher bands

32. - G9C04

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

Select	Answer
A	The director is normally the longest element
B	The reflector is normally the shortest element
C	All of the elements must be the same length
D	The reflector is normally the longest element

33. - G9D06

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

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

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	A calibrated field strength meter with a calibrated antenna
B	An oscilloscope with a high-stability crystal marker generator
C	A receiver with an S meter
D	An SWR meter with a peak-reading function

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of engine over torque
B	Danger of carbon monoxide poisoning
C	Lack of oxygen for adequate combustion
D	Lack of nitrogen for adequate combustion

Figure G7-1