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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	30 meters
B	60 meters
C	11 meters
D	12 meters

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be coordinated with the National Beacon Organization
B	There must be no more than one beacon signal transmitting in the same band from the same station location
C	A beacon station may not use automatic control
D	The frequency must be posted on the Internet or published in a national periodical

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	1.8 kHz
B	3 kHz
C	2.8 kHz
D	5.6 kHz

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	21 years
B	12 years
C	18 years
D	There is no age limit

5. - G1E07

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

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

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

Select	Answer
A	Vestigial sideband
B	Lower sideband
C	Upper sideband
D	Double sideband

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

8. - G2C06

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

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

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
D	Amateur volunteers who conduct amateur licensing examinations

10. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Transmit a steady carrier until the PACTOR protocol times out and disconnects
B	Send broadcast packets containing your call sign while in MONITOR mode
C	Send a NAK response continuously so that the sending station has to pause
D	Joining an existing contact is not possible, PACTOR connections are limited to two stations

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	It enhances propagation on all HF frequencies
B	It disrupts communications via satellite more than direct communications
C	None, because only areas on the night side of the Earth are affected
D	It disrupts signals on lower frequencies more than those on higher frequencies

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just below the MUF
B	Select a frequency just below the critical frequency
C	Select a frequency just above the LUF
D	Select a frequency just above the critical frequency

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The long path azimuth of a distant station
B	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
C	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
D	The short path azimuth of a distant station

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A slow, rhythmic oscillation
B	A pronounced peak
C	A pronounced dip
D	No change will be observed

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An oscilloscope
B	A signal generator
C	An ohmmeter
D	An ammeter

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Connect all ground conductors to a single point
B	Connect all ground conductors in series
C	Connect the AC neutral conductor to the ground wire
D	Avoid using lock washers and star washers when making ground connections

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 14.647 MHz
B	14.347 to 14.350 MHz
C	14.344 to 14.347 MHz
D	14.3455 to 14.3485 MHz

18. - G4E08

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

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

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of alternating current caused by capacitance or inductance
B	Opposition to the flow of direct current caused by resistance
C	A large spark produced at switch contacts when an inductor is de-energized
D	A property of ideal resistors in AC circuits

20. - G5B12

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

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

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	1733 picofarads
B	3583 picofarads
C	576.9 nanofarads
D	10.750 nanofarads

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase the control grid resistance
B	To reduce grid-to-plate capacitance
C	To increase efficiency
D	To decrease plate resistance

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	PL-259
B	BNC
C	Type N
D	RCA Phono

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Capacitors and inductors
B	Quartz crystals
C	Transformers and transducers
D	Diodes

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is high when either or both inputs are low
B	Output is high only when both inputs are high
C	Output is low only when both inputs are high
D	Output is low when either or both inputs are high

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	Balanced modulator
B	IF amplifier
C	Discriminator
D	Detector

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	Antenna inductance or capacitance
C	Attenuator level
D	The RF clipping level

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	60 kHz
B	101.75 Hz
C	5 kHz
D	416.7 Hz

29. - G8C12

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

Select	Answer
A	Binary
B	Viterbi
C	Varicode
D	Volumetric

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	6:1
B	1.5:1
C	You cannot determine SWR from impedance values
D	3:1

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	21 feet
C	8 feet
D	16 feet

32. - G9C07

What does "front-to-back ratio" mean in reference to a Yagi antenna?

Select	Answer
A	The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction
B	The ratio of forward gain to dipole gain
C	The relative position of the driven element with respect to the reflectors and directors
D	The number of directors versus the number of reflectors

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

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

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Ensure that you and the antenna structure are grounded
B	Turn off the transmitter and disconnect the feed line
C	Wear a radiation badge
D	All of these choices are correct

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