US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	28.020 MHz
B	All of these choices are correct
C	28.550 MHz
D	28.350 MHz

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	They may be used if they do not obscure the meaning of a message
B	They are not permitted
C	Only "10 codes" are permitted
D	Only "Q" signals are permitted

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	1200 baud
C	56 kilobaud
D	19.6 kilobaud

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	An FCC General Class or higher license and VEC accreditation
B	Notification to the FCC that you want to give an examination
C	Possession of a properly obtained telegraphy license
D	Receipt of a CSCE for General Class

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 using a band where the Amateur Service is secondary
C	All of these choices are correct
D	When operating within one mile of an FCC Monitoring Station

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

Select	Answer
A	Upper sideband
B	Vestigial sideband
C	Double sideband
D	Lower sideband

7. - G2B11

What frequency should be used to send a distress call?

Select	Answer
A	Only frequencies that are within your operating privileges
B	Whichever frequency has the best chance of communicating the distress message
C	Only frequencies authorized for RACES or ARES stations
D	Only frequencies used by police, fire or emergency medical services

8. - G2C06

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

Select	Answer
A	Sending without error
B	Matching your transmit frequency to the frequency of a received signal
C	Matching the speed of the transmitting station
D	Operating split to avoid interference on frequency

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

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

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.150 - 14.225 MHz
B	14.275 - 14.350 MHz
C	14.000 - 14.050 MHz
D	14.070 - 14.100 MHz

11. - G3A09

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

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

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just above the critical frequency
B	Select a frequency just below the critical frequency
C	Select a frequency just above the LUF
D	Select a frequency just below the MUF

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency below the Maximum Usable Frequency
B	The signal is heard on a frequency above the Maximum Usable Frequency
C	The communication is during a sunspot maximum
D	The communication is during a sudden ionospheric disturbance

14. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
B	To prevent stations from interfering with one another
C	To allow time for a warning signal to be sent to other stations
D	To allow the transmitter power regulators to charge properly

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

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	The ground rod is resonant
C	The ground wire has high impedance on that frequency
D	Insulated wire has been used for the ground wire

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

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To reduce the chance of damage if the antenna should strike an object
C	To increase the "Q" of the antenna
D	To narrow the operating bandwidth of the antenna

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of alternating current caused by capacitance or inductance
B	Opposition to the flow of direct current caused by resistance
C	A large spark produced at switch contacts when an inductor is de-energized
D	A property of ideal resistors in AC circuits

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 is the sum of the reciprocal of each individual voltage drop
D	It equals the sum of the currents through each branch

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

Select	Answer
A	A resistor in series
B	A resistor in parallel
C	A capacitor in parallel
D	A capacitor in series

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	High capacitance for given volume
B	High stability
C	Comparatively low cost
D	Tight tolerance

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Amplifier and antenna
B	Computer and transceiver
C	Microphone and transceiver
D	Power supply and amplifier

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 11
B	Symbol 7
C	Symbol 1
D	Symbol 2

25. - G7B09

What determines the frequency of an LC oscillator?

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

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	A digital processor chip
B	All of the these choices are correct
C	An analog to digital converter
D	A digital to analog converter

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency modulation
C	Frequency conversion
D	Frequency transformation

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	Reactance modulator
B	Mixer
C	Multiplier
D	Pre-emphasis network

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Footer
B	Preamble
C	Directory
D	Header

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	5:1
B	1:5
C	50:1
D	2:1

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	131 feet
C	42 feet
D	263 feet

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

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in elevation
B	It narrows the main lobe in azimuth
C	It allows simultaneous vertical and horizontal polarization
D	It allows quick selection of vertical or horizontal polarization

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 in a wet area
C	It should not be installed higher than you can reach
D	It should limited to 10 feet in height

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	100 amperes
B	30 amperes
C	60 amperes
D	15 amperes

Figure G7-1