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. - G1A12

Which of the following applies when the FCC rules designate the Amateur Service as a secondary user on a band?

Select	Answer
A	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24 hour use of the band
B	Amateur stations are allowed to use the band only during emergencies
C	Amateur stations are allowed to use the band only if they do not cause harmful interference to primary users
D	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	200 watts PEP output
B	100 watts PEP output
C	20 watts PEP output
D	10 watts PEP output

3. - G1C07

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

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
B	There are no requirements other than being able to show a copy of the expired license
C	They must have a letter from the FCC showing they once held an amateur or commercial license
D	The applicant must pass the current element 2 exam

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 1
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 2

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is more efficient than upper sideband at these frequencies
B	Current amateur practice is to use lower sideband on these frequency bands
C	Lower sideband is the only sideband legal on these frequency bands
D	Because it is fully compatible with an AM detector

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Follow the voluntary band plan for the operating mode you intend to use
B	Check to see if the channel is assigned to another station
C	Identify your station by transmitting your call sign at least 3 times
D	All of these choices are correct

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Report was read from an S meter rather than estimated
C	Chirpy or unstable signal
D	Key clicks

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	To help with a reply if the FCC requests information
B	The log provides evidence of operation needed to renew a license without retest
C	The ITU requires a log of all international third party traffic
D	The ITU requires a log of all international contacts

10. - G2E12

Which of the following describes a waterfall display?

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

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is improved
B	VHF/UHF ducting is disturbed
C	HF communications are disturbed
D	HF communications are improved

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Long path HF propagation at sunrise and sunset
B	Short distance MF or HF propagation using high elevation angles
C	Propagation near the MUF
D	Double hop propagation near the LUF

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce signal overload due to strong incoming signals
B	To reduce the transmitter power when driving a linear amplifier
C	To reduce power consumption when operating from batteries
D	To slow down received CW signals for better copy

15. - G4B03

Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

Select	Answer
A	A field strength meter
B	A sidetone monitor
C	An oscilloscope
D	A wavemeter

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	Balanced mixing
B	A noise limiter
C	Bandpass tuning
D	A Digital Signal Processor (DSP) filter

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 7.184 MHz
B	7.178 to 7.181 MHz
C	7.175 to 7.178 MHz
D	7.1765 to 7.1795 MHz

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 serves to regulate the charging voltage to prevent overcharge
C	The diode greatly increases the efficiency during times of high illumination
D	The diode limits the current flowing from the panel to a safe value

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Insert a circulator between the two circuits
B	Reduce the power output of the first circuit
C	Insert an LC network between the two circuits
D	Increase the power output of the first circuit

20. - G5B12

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

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

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	540 volts
B	5.9 volts
C	2370 volts
D	26.7 volts

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	Inexpensive RF capacitor
B	High capacitance for a given volume
C	Much less leakage than any other type
D	Tight tolerance

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	All of these choices are correct
B	It offers a wide dynamic range
C	It requires ambient or back lighting
D	It has a wide viewing angle

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 11
B	Symbol 6
C	Symbol 7
D	Symbol 1

25. - G7B13

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

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

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	Product detector
C	Balanced modulator
D	RF oscillator

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Frequency drift
C	Insufficient bandwidth
D	Excessive bandwidth

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	5 kHz
B	8 kHz
C	3 kHz
D	16 kHz

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By controlling transmitter output power for optimum signal strength
B	By transmitting redundant information with the data
C	By using a parity bit with each character
D	By using the varicode character set

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	2:1
B	1:5
C	50:1
D	5:1

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It peaks at about 1/8 wavelength from the end
B	It is unaffected by the location of the feed point
C	It steadily increases
D	It steadily decreases

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It is useful for matching multiband antennas
B	All of these choices are correct
C	It does not require that the elements be insulated from the boom
D	It does not require any inductors or capacitors

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A helical antenna for space reception
B	A vertical antenna
C	A broad-band mobile antenna
D	A very long and low directional receiving antenna

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	A receiver with an S meter
B	A calibrated field strength meter with a calibrated antenna
C	An SWR meter with a peak-reading function
D	An oscilloscope with a high-stability crystal marker generator

35. - G0B13

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

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

Figure G7-1