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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14405 kHz
B	14005 kHz
C	14105 kHz
D	14305 kHz

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	Only "Q" signals are permitted
C	They are not permitted
D	Only "10 codes" are permitted

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	200 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	1500 watts PEP output

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	Receipt of a CSCE for General Class
C	Notification to the FCC that you want to give an examination
D	Possession of a properly obtained telegraphy license

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Fail-safe digital station
B	Automatically controlled digital station
C	Robotically controlled station
D	Locally controlled station

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	It allows "hands free" operation
C	It occupies less bandwidth
D	The received signal is more natural sounding

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 10 kHz
B	Between 150 and 500 Hz
C	Approximately 6 kHz
D	Approximately 3 kHz

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Stop sending
B	Zero beat my signal
C	I am troubled by static
D	Send more slowly

9. - G2D10

What is QRP operation?

Select	Answer
A	Low power transmit operation
B	Traffic relay procedure net operation
C	Transmission using Quick Response Protocol
D	Remote piloted model control

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	SSB
B	USB
C	LSB
D	DSB

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Higher signal strength for HF signals passing through the polar regions
B	Auroras that can reflect VHF signals
C	Reduced long delayed echoes
D	Improved HF long path propagation

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Check the strength of TV signals from Western Europe
B	Listen for signals from an international beacon in the frequency range you plan to use
C	Send a series of dots on the band and listen for echoes from your signal
D	Check the strength of signals in the MF AM broadcast band

13. - G3C02

Where on the Earth do ionospheric layers reach their maximum height?

Select	Answer
A	Where the Sun is rising
B	Where the Sun has just set
C	Where the Sun is on the opposite side of the Earth
D	Where the Sun is overhead

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Insufficient drive power
B	Shorting the input signal to ground
C	Low input SWR
D	Excessive drive power

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An oscilloscope
B	An ammeter
C	A signal generator
D	An ohmmeter

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Avoid using lock washers and star washers when making ground connections
B	Connect the AC neutral conductor to the ground wire
C	Connect all ground conductors in series
D	Connect all ground conductors to a single point

17. - G4D06

Where is an S meter found?

Select	Answer
A	In an SWR bridge
B	In a transmitter
C	In a receiver
D	In a conductance bridge

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	FCC rules limiting mobile output power on the 75-meter band
B	"Picket Fencing" signal variation
C	The antenna system
D	The wire gauge of the DC power line to the transceiver

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 frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance increases

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	24 watts
B	6 watts
C	60 watts
D	2.4 watts

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	0.17 ohms
C	10000 ohms
D	80 ohms

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its enhancement and depletion modes
B	Its peak and valley current points
C	Its active region (between the cutoff and saturation regions)
D	Its saturation and cutoff regions

23. - G6B15

What is the main reason to use keyed connectors instead of non-keyed types?

Select	Answer
A	All of these choices are correct
B	Higher current carrying capacity
C	Reduced chance of incorrect mating
D	Prevention of use by unauthorized persons

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Transformers and transducers
B	Capacitors and inductors
C	Diodes
D	Quartz crystals

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	CW
C	All of these choices are correct
D	SSB

26. - G7C07

What is the simplest combination of stages that implement a superheterodyne receiver?

Select	Answer
A	HF oscillator, mixer, detector
B	RF amplifier, mixer, IF discriminator
C	RF amplifier, detector, audio amplifier
D	HF oscillator, prescaler, audio amplifier

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	The transmitter's automatic level control (ALC) is properly adjusted
B	Signal distortion caused by insufficient collector current
C	Signal distortion caused by excessive drive
D	The transmitter's carrier is properly suppressed

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	Pre-emphasis network
B	Reactance modulator
C	Mixer
D	Multiplier

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and Off
B	Mark and Space
C	High and Low
D	Dot and Dash

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	There is no interaction between transmission line loss and SWR
B	High SWR makes it difficult to measure transmission line loss
C	If a transmission line is lossy, high SWR will increase the loss
D	High SWR reduces the relative effect of transmission line loss

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It must be longer than 1 wavelength
B	It produces only vertically polarized radiation
C	It is more effective on the lower HF bands than on the higher bands
D	You may experience RF burns when touching metal objects in your station

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Loading coils in series with the element
B	Larger diameter elements
C	Tapered-diameter elements
D	Closer element spacing

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	Height is not critical as long as it is significantly more than 1/2 wavelength
B	As close to one wavelength as possible
C	As close to 1/2 wavelength as possible
D	Between 1/10 and 1/4 wavelength

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

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	All of these choices are correct
B	Ensure that all heavy tools are securely fastened to the belt D-ring
C	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
D	Never lean back and rely on the belt alone to support your weight