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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	3900 kHz
B	3750 kHz
C	1875 kHz
D	4005 kHz

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	When it is transmitted on frequencies above 1215 MHz
B	At any time, as long as it produces no spurious emissions
C	When it is an incidental part of a manned space craft retransmission
D	When it is unintentionally transmitted from the background at the transmitter

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

Select	Answer
A	56 kilobaud
B	19.6 kilobaud
C	300 baud
D	1200 baud

4. - G1D02

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

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

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	When operating within one mile of an FCC Monitoring Station
C	When using a band where the Amateur Service is secondary
D	All of these choices are correct

6. - G2A08

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

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

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
B	Listen for 2 minutes before calling CQ
C	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
D	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response

8. - G2C04

What does the Q signal "QRL?" mean?

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

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

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

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 horizontal, signal strength is intensity, time is vertical
C	Frequency is vertical, signal strength is horizontal, time is intensity
D	Frequency is horizontal, signal strength is vertical, time is intensity

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	Microwave communications become unstable
C	Long-distance communication in the upper HF and lower VHF range is enhanced
D	High-frequency radio signals become weak and distorted

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

Select	Answer
A	180 miles
B	12,000 miles
C	1,200 miles
D	2,500 miles

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

Select	Answer
A	The E layer
B	The F1 layer
C	The F2 layer
D	The D layer

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	VOX operation
B	Automatic generation of strings of dots and dashes for CW operation
C	Automatic transmit/receive switching
D	Computer interface for PSK and RTTY operation

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 carrier phase shift
C	Linearity
D	Percentage of frequency modulation

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To remove noise from received signals
B	To increase antenna bandwidth
C	To provide adequate grounding
D	To increase antenna gain

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It increases average power
C	It reduces harmonic distortion
D	It increases peak power

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Siemens
C	Farad
D	Ampere

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 milliwatts
B	Approximately 11 watts
C	Approximately 61 milliwatts
D	Approximately 61 watts

21. - G5C06

What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?

Select	Answer
A	5.9 volts
B	540 volts
C	26.7 volts
D	2370 volts

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 the cell is kept warm during the recharging period
C	When a constant current charger is used
D	Never

23. - G6B05

What is meant when memory is characterized as non-volatile?

Select	Answer
A	It is resistant to high temperatures
B	The stored information cannot be changed once written
C	The stored information is maintained even if power is removed
D	It is resistant to radiation damage

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A series of DC pulses at twice the frequency of the AC input
B	A steady DC voltage
C	A sine wave at half the frequency of the AC input
D	A series of DC pulses at the same frequency as the AC input

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	CW
C	SSB
D	All of these choices are correct

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	Product detector
B	IF filter
C	RF oscillator
D	Balanced modulator

27. - G8A11

What is the modulation envelope of an AM signal?

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

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	Mixer
B	Reactance modulator
C	Multiplier
D	Pre-emphasis network

29. - G8C12

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

Select	Answer
A	Viterbi
B	Volumetric
C	Binary
D	Varicode

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	Using more transmitter power than the antenna can handle
B	A difference between feed line impedance and antenna feed point impedance
C	Operating an antenna at its resonant frequency
D	Feeding the antenna with unbalanced feed line

31. - G9B04

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

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

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	There is no change in polarization
B	The radiated signal becomes circularly polarized
C	The polarization of the radiated signal changes from horizontal to vertical
D	The polarization of the radiated signal changes from vertical to horizontal

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Nearly Vertical Inductance System
B	Non-Varying Impedance Smoothing
C	Near Vertical Incidence sky-wave
D	Non-Varying Indicated SWR

34. - G0A06

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

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

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	Insure that the generator is not grounded
B	Disconnect the incoming utility power feed
C	All of these choices are correct
D	Insure that all lightning grounds are disconnected