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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	30 meters
B	60 meters
C	12 meters
D	11 meters

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Monitor the frequency before transmitting
B	Follow generally accepted band plans agreed to by the Amateur Radio community
C	All of these choices are correct
D	Insure that the frequency and mode selected are within your license class privileges

3. - G1C07

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

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

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	A Volunteer Examiner Coordinator
B	The Wireless Telecommunications Bureau
C	The Universal Licensing System
D	The Federal Communications Commission

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	Any language recognized by the United Nations
B	The language being used for the contact
C	English only
D	English, Spanish, French, or German

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	Vestigial sideband
C	Lower sideband
D	Double sideband

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Nets always have priority
B	Except during FCC declared emergencies, no one has priority access to frequencies
C	QSOs in progress always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Operating split to avoid interference on frequency
B	Matching the speed of the transmitting station
C	Sending without error
D	Matching your transmit frequency to the frequency of a received 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	Only when the foreign country has a formal third party agreement filed with the FCC
C	When the contact is with amateurs in any country as long as the communication is conducted in English
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Transmit UI packets several times and wait to see if there is a response from another PACTOR station
C	Put the modem or controller in a mode which allows monitoring communications without a connection
D	Send the message: "Is this frequency in use?"

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved high-latitude HF propagation
B	Degraded high-latitude HF propagation
C	Improved ground-wave propagation
D	Improved chances of UHF ducting

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

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

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

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

14. - G4A10

What is the purpose of an electronic keyer?

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

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When measuring the frequency of an oscillator
B	When testing logic circuits
C	When high precision is desired
D	When adjusting tuned circuits

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Install an RF filter in series with the ground wire
B	Connect all equipment grounds together
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Use a ground loop for best conductivity

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.3455 to 14.3485 MHz
B	14.347 to 14.350 MHz
C	14.344 to 14.347 MHz
D	14.347 to 14.647 MHz

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Harmonic radiation may increase
B	Operating bandwidth may be very limited
C	Short antennas can only receive circularly polarized signals
D	Short antennas are more likely to cause distortion of transmitted signals

19. - G5A11

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

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

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It equals the average of each branch current
B	It decreases as more parallel branches are added to the circuit
C	It equals the sum of the currents through each branch
D	It is the sum of the reciprocal of each individual voltage drop

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual inductance
B	Displacement current coupling
C	Capacitive coupling
D	Mutual capacitance

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	Parallel to each other
B	Interleaved
C	At right angles to each other
D	In line

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	Linear voltage regulator
B	Frequency Counter
C	Microprocessor
D	NAND Gate

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	One-half the normal peak output voltage of the power supply
B	Two times the normal peak output voltage of the power supply
C	One-half the normal output voltage of the power supply
D	Equal to the normal output voltage of the power supply

25. - G7B06

What is a shift register?

Select	Answer
A	A digital mixer
B	An array of operational amplifiers used for tri-state arithmetic operations
C	A clocked array of circuits that passes data in steps along the array
D	An analog mixer

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

Select	Answer
A	Balanced modulator
B	IF amplifier
C	Detector
D	Discriminator

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Phase modulation
B	Radian inversion
C	Angle convolution
D	Phase convolution

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Image response
B	Mixer interference
C	Intermediate interference
D	Quadrature noise

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	7
B	8
C	5
D	The number varies

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 1000 feet
B	Ohms per 100 feet
C	Ohms per 1000 feet
D	Decibels per 100 feet

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	8 feet
C	16 feet
D	32 feet

32. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1/4 wavelength
B	1/2 wavelength
C	1 wavelength
D	3/4 wavelength

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
B	A higher transmitter duty cycle permits greater short-term exposure levels
C	A lower transmitter duty cycle permits greater short-term exposure levels
D	High duty cycle transmitters are exempt from RF exposure requirements

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