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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	160 meters
B	30 meters
C	12 meters
D	17 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 ITU
B	The Control Operator
C	The FCC
D	The IEEE

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	3 kHz
B	2.8 kHz
C	1.8 kHz
D	5.6 kHz

4. - G1D02

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

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

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

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say "CQ" followed by the call sign of either station
B	Say "Break Break Break" and wait for a response
C	Say "QRZ" several times followed by your call sign
D	Say your call sign during a break between transmissions by the other stations

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	Only on authorized HF frequencies
B	Only when transmitting in RACES
C	At any time when transmitting in an organized net
D	At any time during an actual emergency

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you listening only for a specific station?"
B	"Are you operating full break-in" or "Can you operate full break-in?"
C	"Are you busy?", or "Is this frequency in use?"
D	"Will you keep the frequency clear?"

9. - G2D04

Which of the following describes an azimuthal projection map?

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

10. - G2E12

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is vertical, signal strength is intensity, time is horizontal
B	Frequency is vertical, signal strength is horizontal, time is intensity
C	Frequency is horizontal, signal strength is vertical, time is intensity
D	Frequency is horizontal, signal strength is intensity, time is vertical

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Auroras that can reflect VHF signals
B	Higher signal strength for HF signals passing through the polar regions
C	Improved HF long path propagation
D	Reduced long delayed echoes

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency above the Maximum Usable Frequency
B	The signal is heard on a frequency below the Maximum Usable Frequency
C	The communication is during a sudden ionospheric disturbance
D	The communication is during a sunspot maximum

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To reduce interference from carriers in the receiver passband
B	To enhance the reception of a specific frequency on a crowded band
C	To eliminate receiver interference from impulse noise sources
D	To restrict the transmitter voice bandwidth

15. - G4B15

What type of transmitter performance does a two-tone test analyze?

Select	Answer
A	Percentage of suppression of carrier and undesired sideband for SSB
B	Percentage of frequency modulation
C	Linearity
D	Percentage of carrier phase shift

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	The ground rod is resonant
C	The ground wire has high impedance on that frequency
D	Insulated wire has been used for the ground wire

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Excessive background pickup
B	All of these choices are correct
C	Distorted speech
D	Splatter

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photosynthesis
B	Photovoltaic conversion
C	Photon decomposition
D	Photon emission

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A transformer
B	All of these choices are correct
C	A Pi-network
D	A length of transmission line

20. - G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

Select	Answer
A	5000 watts
B	2500 watts
C	8.75 watts
D	625 watts

21. - G5C07

What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Select	Answer
A	12.2 to 1
B	150 to 1
C	24.4 to 1
D	300 to 1

22. - G6A11

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

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

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	Higher current carrying capacity
C	Prevention of use by unauthorized persons
D	Reduced chance of incorrect mating

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	Equal to the normal peak output voltage of the power supply
B	One-quarter the normal output voltage of the power supply
C	Double the normal peak output voltage of the power supply
D	Half the normal output voltage of the power supply

25. - G7B08

How is the efficiency of an RF power amplifier determined?

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

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	IF filter
B	Balanced modulator
C	Product detector
D	RF oscillator

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By keying an FM transmitter with a sub-audible tone
B	By using a transceiver's computer data interface protocol to change frequencies
C	By changing an oscillator's frequency directly with a digital control signal
D	By reconfiguring the CW keying input to act as a tone generator

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

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Viterbi
B	Binary
C	Varicode
D	Volumetric

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 100 feet
B	Ohms per 1000 feet
C	Ohms per 100 feet
D	Decibels per 1000 feet

31. - G9B04

What is the radiation pattern of a dipole antenna in free space in the plane of the conductor?

Select	Answer
A	It is a figure-eight off both ends of the antenna
B	It is a circle (equal radiation in all directions)
C	It has a pair of lobes on one side of the antenna and a single lobe on the other side
D	It is a figure-eight at right angles to the antenna

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

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in azimuth
B	It allows quick selection of vertical or horizontal polarization
C	It narrows the main lobe in elevation
D	It allows simultaneous vertical and horizontal polarization

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It cools body tissue
B	It causes radiation poisoning
C	It causes the blood count to reach a dangerously low level
D	It heats body tissue

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut off the power supply if too much voltage is produced
B	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
C	To shut down the unit if it becomes too hot
D	To ensure that dangerous voltages are removed if the cabinet is opened