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

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be posted on the Internet or published in a national periodical
B	A beacon station may not use automatic control
C	The frequency must be coordinated with the National Beacon Organization
D	There must be no more than one beacon signal transmitting in the same band from the same station location

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Only the minimum power necessary to carry out the desired communications should be used
B	Effective radiated power cannot exceed 1500 watts
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz

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

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any message, as long as the amateur operator is not paid
B	Only messages for other licensed amateurs
C	Any messages, as long as the text of the message is recorded in the station log
D	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief

6. - G2A05

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

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
B	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
C	An FCC rule that allows only digital contacts in that portion of the band
D	A portion of the band that has been voluntarily set aside for digital contacts only

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	I am ready to receive messages
B	You are sending too fast
C	I am quitting for the day
D	There is interference on the frequency

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Date and time of contact
B	All of these choices are correct
C	Band and/or frequency of the contact
D	Call sign of station contacted and the signal report given

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	USB
B	DSB
C	CW
D	LSB

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	30 meters and 20 meters
B	60 meters and 40 meters
C	15 meters, 12 meters and 10 meters
D	80 meters and 160 meters

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

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

13. - G3C11

Which of the following antenna types will be most effective for skip communications on 40-meters during the day?

Select	Answer
A	A vertical antenna
B	A left-hand circularly polarized antenna
C	A horizontal dipole placed between 1/8 and 1/4 wavelength above the ground
D	A right-hand circularly polarized antenna

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	ALC will invert the modulation of the AFSK mode
B	When using digital modes, too much ALC activity can cause the transmitter to overheat
C	Improper action of ALC distorts the signal and can cause spurious emissions
D	All of these choices are correct

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 high precision is desired
C	When adjusting tuned circuits
D	When testing logic circuits

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	Mixing products are greatly reduced
C	The DSP filter is much more effective at VHF frequencies
D	A wide range of filter bandwidths and shapes can be created

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 20 times more powerful
C	It is 20 times less powerful
D	It is 10 times less powerful

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	The socket is not wired with an RF-shielded power cable
B	The socket's wiring may be inadequate for the current drawn by the transceiver
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	Drawing more than 50 watts from this socket could cause the engine to overheat

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Ohm
C	Ampere
D	Watt

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	8.5 volts
B	24 volts
C	34 volts
D	12 volts

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

Select	Answer
A	0.30 microfarads
B	33.3 microfarads
C	0.33 microfarads
D	300 microfarads

22. - G6A13

Why is the polarity of applied voltages important for polarized capacitors?

Select	Answer
A	All of these choices are correct
B	Incorrect polarity can cause the capacitor to short-circuit
C	The capacitor could overheat and explode
D	Reverse voltages can destroy the dielectric layer of an electrolytic capacitor

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A DC power connector rated for currents between 30 and 50 amperes
B	A special connector for microwave interfacing
C	A family of multiple circuit connectors suitable for audio and control signals
D	A special watertight connector for use in marine applications

24. - G7A11

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

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

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is high when either or both inputs are low
C	Output is low when either or both inputs are high
D	Output is high only when both inputs are high

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By using direct signal phasing
B	By converting the signal from analog to digital and using digital processing
C	By differential spurious phasing
D	By converting the signal from digital to analog and taking the difference of mixing products

27. - G8A09

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

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

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Phase inverting
B	Heterodyning
C	Cancellation
D	Synthesizing

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It sends the packet back to the transmitting station
B	It terminates the contact
C	It requests the packet be retransmitted
D	It requests a change in transmitting protocol

30. - G9A06

In what units is RF feed line loss usually expressed?

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

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	16 feet
C	11 feet
D	21 feet

32. - G9C07

What does "front-to-back ratio" mean in reference to a Yagi antenna?

Select	Answer
A	The relative position of the driven element with respect to the reflectors and directors
B	The ratio of forward gain to dipole gain
C	The number of directors versus the number of reflectors
D	The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Wide bandwidth
C	Harmonic suppression
D	Polarization diversity

34. - G0A04

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

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

35. - G0B11

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

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

Figure G7-1