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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Attempt to contact the station and request that it stop the interference
B	Move to a clear frequency or stop transmitting
C	Notify the FCCs regional Engineer in Charge of the interference
D	Increase your transmitter's power to overcome the interference

2. - G1B07

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

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

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D09

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

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

5. - G1E01

Which of the following would disqualify a third party from participating in stating a message over an amateur station?

Select	Answer
A	The third party is not a U.S. citizen
B	The third party is a licensed amateur
C	The third party's amateur license has been revoked and not reinstated
D	The third party is speaking in a language other than English

6. - G2A10

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

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	150 to 500 Hz
B	5 to 50 Hz
C	1 to 3 kHz
D	3 to 6 kHz

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The speed at which the CQ was sent
B	At the standard calling speed of 5 wpm
C	A slow speed until contact is established
D	The fastest speed at which you are comfortable copying

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	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
B	Only when the foreign country has a formal third party agreement filed with the FCC
C	Only when the foreign country is a member of the International Amateur Radio Union
D	When the contact is with amateurs in any country as long as the communication is conducted in English

10. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	425 Hz
B	85 Hz
C	170 Hz
D	850 Hz

11. - G3A12

What does the K-index indicate?

Select	Answer
A	The short term stability of the Earth's magnetic field
B	The relative position of sunspots on the surface of the Sun
C	The stability of the Sun's magnetic field
D	The solar radio flux at Boulder, Colorado

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Periodic fading approximately every 10 seconds
B	The signal might be cancelled causing severe attenuation
C	Signal strength increased by 3 dB
D	A well-defined echo might be heard

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	All of these choices are correct
B	Because it is the densest ionospheric layer
C	Because it does not absorb radio waves as much as other ionospheric regions
D	Because it is the highest ionospheric region

14. - G4A07

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

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

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better precision for most uses
B	Faster response
C	Better for RF measurements
D	Better for measuring computer circuits

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	Overheating of ground straps
B	High RF voltages on the enclosures of station equipment
C	A ground loop
D	Corrosion of the ground rod

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 4 times
B	Approximately 2 times
C	Approximately 1.5 times
D	Approximately 8 times

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	The vehicle control computer
B	All of these choices are correct
C	The fuel delivery system
D	The battery charging system

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	No current can flow through the circuit
B	The source delivers minimum power to the load
C	The electrical load is shorted
D	The source can deliver maximum power to the load

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	70 microfarads
C	14.3 microfarads
D	1000 microfarads

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

Select	Answer
A	0.1 volt
B	1.0 volts
C	0.3 volts
D	0.7 volts

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	RCA Phono
B	BNC
C	Type N
D	PL-259

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 2
D	Symbol 5

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	Any RF power amplifier used in conjunction with an amateur transceiver
C	An amplifier in which the output preserves the input waveform
D	An amplifier used as a frequency multiplier

26. - G7C09

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

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

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency shift keying
B	Frequency modulation
C	Phase modulation
D	Amplitude modulation

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	Mixer
B	Multiplier
C	Pre-emphasis network
D	Reactance modulator

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The entire file has been received correctly
B	The receiver is reporting the packet was received without error
C	The receiver is busy decoding the packet
D	The receiver is requesting the packet be retransmitted

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 100 feet
B	Decibels per 1000 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	32 feet
B	16 feet
C	24 feet
D	8 feet

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The reflector is normally the longest element
B	All of the elements must be the same length
C	The reflector is normally the shortest element
D	The director is normally the longest element

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Portable direction finding at lower HF frequencies
C	Directional receiving for low HF bands
D	Portable direction finding at higher HF frequencies

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The average time it takes RF radiation to have any long-term effect on the body
C	The average amount of power developed by the transmitter over a specific 24 hour period
D	The total RF exposure averaged over a certain time

35. - G0B11

Which of the following is good practice for lightning protection grounds?

Select	Answer
A	They must be bonded together with all other grounds
B	Bends in ground wires must be made as close as possible to a right angle
C	Lightning grounds must be connected to all ungrounded wiring
D	They must be bonded to all buried water and gas lines

Figure G7-1