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	17 meters
B	12 meters
C	160 meters
D	30 meters

2. - G1B02

With which of the following conditions must beacon stations comply?

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

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	An effective radiated power equivalent to 100 watts from a half-wave dipole
B	50 watts PEP output
C	200 watts PEP output
D	1500 watts PEP output

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

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	Upper sideband
B	Double sideband
C	Vestigial sideband
D	Lower sideband

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 3 kHz
B	Between 150 and 500 Hz
C	Approximately 6 kHz
D	Approximately 10 kHz

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Send more slowly
B	Stop sending
C	I am troubled by static
D	Zero beat my signal

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the foreign country is a member of the International Amateur Radio Union
B	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
C	Only when the foreign country has a formal third party agreement filed with the FCC
D	When the contact is with amateurs in any country as long as the communication is conducted in English

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	DSB
B	SSB
C	USB
D	LSB

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	Frequencies above 300 MHz become usable for long-distance communication
B	High-frequency radio signals become weak and distorted
C	Long-distance communication in the upper HF and lower VHF range is enhanced
D	Microwave communications become unstable

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function for communications between two points
B	The Longest Universal Function during a 24 hour period
C	The Lowest Usable Frequency during a 24 hour period
D	The Lowest Usable Frequency for communications between two points

13. - G3C08

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

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

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Shorting the input signal to ground
B	Excessive drive power
C	Low input SWR
D	Insufficient drive power

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio frequency range square wave signals of equal amplitude
C	Two swept frequency tones
D	Two audio signals of the same frequency shifted 90 degrees

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Forward-biased diode
B	Bypass inductor
C	Bypass capacitor
D	Reverse-biased diode

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

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

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode prevents self-discharge of the battery though the panel during times of low or no illumination
B	The diode greatly increases the efficiency during times of high illumination
C	The diode serves to regulate the charging voltage to prevent overcharge
D	The diode limits the current flowing from the panel to a safe value

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ohm
B	Volt
C	Ampere
D	Watt

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 12 dB
B	Approximately 6 dB
C	Approximately 2 dB
D	Approximately 3 dB

21. - G5C08

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

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

22. - G6A04

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

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

23. - G6B12

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

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

24. - G7A02

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

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

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	Low distortion
B	Low standby power
C	High Efficiency
D	No need for bias

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	Detector
B	Balanced modulator
C	Mixer
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. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It is required by FCC rules
B	It improves impedance matching of the antenna
C	It results in the best signal to noise ratio
D	It minimizes power consumption in the receiver

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Varicode Error Correction is used to ensure accurate message reception
B	Higher power is needed as compared to RTTY for similar error rates
C	Upper case letters make the signal stronger
D	Upper case letters use longer Varicode signals and thus slow down transmission

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	3:1
D	You cannot determine SWR from impedance values

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It decreases
B	It reaches a maximum at an angle of 45 degrees
C	It increases
D	It stays the same

32. - G9C15

Approximately how long is each side of the reflector element of a quad antenna?

Select	Answer
A	Slightly less than 1/4 wavelength
B	Slightly less than 1/2 wavelength
C	Slightly more than 1/2 wavelength
D	Slightly more than 1/4 wavelength

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

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

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on FCC OET Bulletin 65
B	By measurement of field strength using calibrated equipment
C	By calculation based on computer modeling
D	All of these choices are correct

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator must be insulated from ground
B	Fuel should be stored near the generator for rapid refueling in case of an emergency
C	The generator should be located in a well-ventilated area
D	All of these choices are correct