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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	160 meters
C	12 meters
D	30 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	300 feet
B	100 feet
C	50 feet
D	200 feet

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1200 watts PEP output
B	1000 watts PEP output
C	200 watts PEP output
D	1500 watts PEP output

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	Whenever you operate on any amateur frequency
B	A special identifier is not required as long as your General Class license application has been filed with the FCC
C	Whenever you operate using Technician frequency privileges
D	Whenever you operate using General Class frequency privileges

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The licensee of the coordinated repeater has primary responsibility to resolve the interference
B	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference
C	The frequency coordinator bears primary responsibility to resolve the interference
D	Both repeater licensees share equal responsibility to resolve the interference

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Phase modulation
B	Double sideband
C	Single sideband
D	Frequency modulation

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Continue your communication because you were on the frequency first
B	Acknowledge the station in distress and determine what assistance may be needed
C	Immediately cease all transmissions
D	Change to a different frequency

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Increase your power
B	Change frequency
C	Send slower
D	Repeat everything twice

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 provide emergency and public safety communications
C	To encourage self-regulation and compliance with the rules by radio amateur operators
D	To conduct efficient and orderly amateur licensing examinations

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3500 - 3525 kHz
B	3570 - 3600 kHz
C	3700 - 3750 kHz
D	3775 - 3825 kHz

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	8 minutes
B	40 hours
C	28 days
D	11 years

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24 hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency for communications between two points
D	The Minimum Usable Frequency during a 24 hour period

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

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 power consumption when operating from batteries
C	To reduce the transmitter power when driving a linear amplifier
D	To slow down received CW signals for better copy

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	An oscilloscope uses less power
B	Input impedance is much lower
C	Complex waveforms can be measured
D	Complex impedances can be easily measured

16. - G4C11

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

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

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Increase transmitter bass response for more natural sounding SSB signals
B	Increase the intelligibility of transmitted phone signals during poor conditions
C	Decrease high-frequency voice output to prevent out of band operation
D	Prevent distortion of voice signals

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using resistor wire
B	To the battery using heavy gauge wire
C	To the battery using resistor wire
D	To the alternator or generator using heavy gauge wire

19. - G5A11

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

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

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	2.00
B	1.00
C	0.707
D	1.414

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	220 nF
B	2.2 nF
C	22 nF
D	0.22 nF

22. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Large values of inductance may be obtained
B	Most of the magnetic field is contained in the core
C	The magnetic properties of the core may be optimized for a specific range of frequencies
D	All of these choices are correct

23. - G6B10

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

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

24. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	270 degrees
B	180 degrees
C	90 degrees
D	360 degrees

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class AB
C	Class B
D	Class C

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	Detector
C	IF amplifier
D	Discriminator

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	The RF clipping level
B	Transmit audio or microphone gain
C	Attenuator level
D	Antenna inductance or capacitance

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	Intermediate interference
B	Mixer interference
C	Image response
D	Quadrature noise

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A code using SELCAL and LISTEN
B	A 5-bit code with additional start and stop bits
C	A code using error detection and correction
D	A 7-bit code with start, stop and parity bits

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation decreases
B	Attenuation reaches a maximum at approximately 18 MHz
C	Attenuation is independent of frequency
D	Attenuation increases

31. - G9B11

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

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

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To increase the main lobe gain
B	To match the relatively high feed point impedance to 50 ohms
C	To increase the front-to-back ratio
D	To match the relatively low feed point impedance to 50 ohms

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To provide balanced feed point impedance
B	To notch spurious frequencies
C	To permit multiband operation
D	To prevent out of band operation

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. - 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	30 amperes
B	15 amperes
C	100 amperes
D	60 amperes