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. - G1A09

Which of the following frequencies is within the General Class portion of the 15-meter band?

Select	Answer
A	14250 kHz
B	24900 kHz
C	21300 kHz
D	18155 kHz

2. - G1B09

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

Select	Answer
A	Only when there is no other means of communications readily available
B	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
C	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
D	Never

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	30 days
B	180 days
C	For as long as your current license is valid
D	365 days

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	All of these choices are correct
C	Information must be exchanged in English
D	The foreign amateur station must be in a country with which the United States has a third party agreement

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	A general call for any station
B	The caller is listening for a station in Germany
C	A distress call
D	The caller is looking for any station outside their own country

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Any control operator when normal communication systems are operational
B	A person holding an FCC issued amateur operator license or an appropriate government official
C	Only a RACES net control operator
D	Only a person holding an FCC issued amateur operator license

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	There is interference on the frequency
B	I am quitting for the day
C	I am ready to receive messages
D	You are sending too fast

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. - 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	LSB
C	SSB
D	USB

11. - G3A04

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

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

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

Select	Answer
A	They are bent back to the Earth
B	They are amplified by interaction with the ionosphere
C	They are bent and trapped in the ionosphere to circle the Earth
D	They pass through the ionosphere

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 F2 layer
B	The E layer
C	The F1 layer
D	The D layer

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Computer interface for PSK and RTTY operation
B	Automatic generation of strings of dots and dashes for CW operation
C	Automatic transmit/receive switching
D	VOX 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 frequency modulation
C	Linearity
D	Percentage of carrier phase shift

16. - G4C01

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

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

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Excessive background pickup
B	Distorted speech
C	All of these choices are correct
D	Splatter

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

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance decreases

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	1.4 watts
B	100 watts
C	400 watts
D	353.5 watts

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	0.07 microfarads
B	14.3 microfarads
C	1000 microfarads
D	70 microfarads

22. - G6A10

Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?

Select	Answer
A	Heater
B	Screen Grid
C	Trigger electrode
D	Control grid

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	A moisture-resistant RF connector useful to 10 GHz
B	An audio connector used in surround-sound installations
C	A small bayonet connector used for data circuits
D	A threaded connector used for hydraulic systems

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Faster switching time makes higher output voltage possible
B	All of these choices are correct
C	High frequency operation allows the use of smaller components
D	Fewer circuit components are required

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the counter
B	The time delay of the lag circuit
C	The number of stages in the divider
D	The inductance and capacitance in the tank circuit

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	IF amplifier
D	Mixer

27. - G8A11

What is the modulation envelope of an AM signal?

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

28. - G8B06

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

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

29. - G8C08

Which of the following statements is true about PSK31?

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

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
B	The feed line must be cut to a length equal to an even number of physical half wavelengths
C	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
D	The antenna feed point must be at DC ground potential

31. - G9B04

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

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

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

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
B	High vertical angle radiation for working stations within a radius of a few hundred kilometers
C	High forward gain
D	All of these choices are correct

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	Wear a radiation badge
C	All of these choices are correct
D	Turn off the transmitter and disconnect the feed line

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	Only the two wires carrying voltage
B	All wires
C	Only the neutral wire
D	Only the ground wire