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. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	28.550 MHz
B	28.020 MHz
C	28.350 MHz
D	All of these choices are correct

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
B	Never
C	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
D	Only when there is no other means of communications readily available

3. - G1C04

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

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

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	Only on the Technician band segments until your license arrives in the mail
D	On any General or Technician Class band segment

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	The control operator must have at least a General Class license
B	The foreign amateur station must be in a country with which the United States has a third party agreement
C	Information must be exchanged in English
D	All of these choices are correct

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Increase power to overcome interference
B	Report the interference to your local Amateur Auxiliary Coordinator
C	As a common courtesy, move your contact to another frequency
D	Tell the interfering stations to change frequency

8. - G2C01

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

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

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 conduct efficient and orderly amateur licensing examinations
C	To coordinate repeaters for efficient and orderly spectrum usage
D	To provide emergency and public safety communications

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	ARES
B	RTTY
C	Winlink
D	Skywarn

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

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

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	A well-defined echo might be heard
B	Signal strength increased by 3 dB
C	Periodic fading approximately every 10 seconds
D	The signal might be cancelled causing severe attenuation

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The ionospheric layer involved is unstable
B	Ground waves are absorbing much of the signal
C	Energy is scattered into the skip zone through several different radio wave paths
D	The E-region is not present

14. - G4A06

What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

Select	Answer
A	SWR Bridge
B	Balanced modulator
C	Q Multiplier
D	Antenna coupler or antenna tuner

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It decreases battery consumption in the meter
B	It improves the frequency response
C	It improves the resolution of the readings
D	It decreases the loading on circuits being measured

16. - G4C09

How can a ground loop be avoided?

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

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 to 7.181 MHz
B	7.175 to 7.178 MHz
C	7.1765 to 7.1795 MHz
D	7.178 to 7.184 MHz

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To increase the "Q" of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Conductance
B	Admittance
C	Reluctance
D	Reactance

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The reciprocal of the RMS value
B	The RMS value
C	The peak value
D	The peak-to-peak value

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	80 ohms
B	0.17 ohms
C	10000 ohms
D	5.9 ohms

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	When the cell is kept warm during the recharging period
B	Never
C	When a constant current charger is used
D	As long as the voltage has not been allowed to drop below 1.0 volt

23. - G6B12

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

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

24. - G7A02

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

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

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To eliminate self-oscillations
B	To cut off the final amplifier during standby periods
C	To limit the modulation index
D	To keep the carrier on frequency

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	Carrier oscillator
B	Filter
C	RF amplifier
D	IF amplifier

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Simpler receiving equipment can be used
B	Audio fidelity is improved
C	Greater modulation percentage is obtainable with lower distortion
D	Available transmitter power can be used more effectively

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Reactance modulator
B	Mixer
C	Pre-emphasis network
D	Multiplier

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The entire file has been received correctly
B	The receiver is busy decoding the packet
C	The receiver is requesting the packet be retransmitted
D	The receiver is reporting the packet was received without error

30. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

Select	Answer
A	50 and 75 ohms
B	500 and 750 ohms
C	80 and 100 ohms
D	25 and 30 ohms

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	16 feet
C	11 feet
D	8 feet

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an isotropic antenna, dBd refers to a dipole antenna
B	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna
C	dBi refers to an isometric antenna, dBd refers to a discone antenna
D	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

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

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should not be installed higher than you can reach
B	It should limited to 10 feet in height
C	It should be installed such that it is protected against unauthorized access
D	It should not be installed in a wet area

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	Solder has too high a dielectric constant to provide adequate lightning protection
B	The resistance of solder is too high
C	A soldered joint will likely be destroyed by the heat of a lightning strike
D	Solder flux will prevent a low conductivity connection