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. - G1A02

On which of the following bands is phone operation prohibited?

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

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The FCC must have declared a state of emergency
B	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
C	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
D	All of these choices are correct

3. - G1C06

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

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	They must have a letter from the FCC showing they once held an amateur or commercial license
B	There are no requirements other than being able to show a copy of the expired license
C	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
D	The applicant must pass the current element 2 exam

5. - G1E06

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

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

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Less bandwidth used and greater power efficiency
B	Very high fidelity voice modulation
C	Less subject to interference from atmospheric static crashes
D	Ease of tuning on receive and immunity to impulse noise

7. - G2B11

What frequency should be used to send a distress call?

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

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign BK
B	Transmitting stations can receive between code characters and elements
C	Automatic keyers are used to send Morse code instead of hand keys
D	An operator must activate a manual send/receive switch before and after every transmission

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the angle at which an amateur satellite crosses the equator
B	A map that shows true bearings and distances from a particular location
C	A map that shows accurate land masses
D	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Insufficient modulation
B	Long Path propagation
C	Backscatter propagation
D	Overmodulation

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	HF communications are disturbed
B	VHF/UHF ducting is improved
C	HF communications are improved
D	VHF/UHF ducting is disturbed

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

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Short distance MF or HF propagation using high elevation angles
C	Long path HF propagation at sunrise and sunset
D	Propagation near the MUF

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Minimum SWR on the antenna
B	Highest plate voltage while minimizing grid current
C	Maximum power output without exceeding maximum allowable plate current
D	Minimum plate current without exceeding maximum allowable grid current

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	Antenna front-to-back ratio
C	Standing wave ratio
D	RF interference

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Not using a balun or line isolator to feed balanced antennas
B	Arcing at a poor electrical connection
C	Lack of rectification of the transmitter's signal in power conductors
D	Using a balun to feed an unbalanced antenna

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 1 kHz above the edge of the segment
B	At least 3 kHz below the edge of the segment
C	Your displayed carrier frequency may be set at the edge of the segment
D	At least 3 kHz above the edge of the segment

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To allow remote tuning
B	To increase the power handling capacity of a whip antenna
C	To electrically lengthen a physically short antenna
D	To allow automatic band changing

19. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency 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	6 watts
B	24 watts
C	2.4 watts
D	60 watts

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	3583 picofarads
C	1733 picofarads
D	576.9 nanofarads

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The gate is separated from the channel with a thin insulating layer
B	The source is separated from the drain by a thin insulating layer
C	The source is formed by depositing metal on silicon
D	The gate is formed by a back-biased junction

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	All of these choices are correct
B	It offers a wide dynamic range
C	It has a wide viewing angle
D	It requires ambient or back lighting

24. - G7A11

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

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

25. - G7B01

Complex digital circuitry can often be replaced by what type of integrated circuit?

Select	Answer
A	Window comparator
B	Charge-coupled device
C	Microcontroller
D	Phase detector

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Detector
B	Balanced modulator
C	Mixer
D	IF amplifier

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	Spurious signals that envelop nearby frequencies
B	The bandwidth of the modulated signal
C	The waveform created by connecting the peak values of the modulated signal
D	The carrier frequency that contains the signal

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	All of these choices are correct
B	To aid in tuning your transmitter
C	Some modes have high duty cycles which could exceed the transmitter's average power rating.
D	To allow time for the other station to break in during a transmission

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	The checksum overflows
B	Packets will be routed incorrectly
C	Encoding reverts to the default character set
D	The connection is dropped

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	75 ohms
B	100 ohms
C	50 ohms
D	300 ohms

31. - G9B12

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

Select	Answer
A	21 feet
B	16 feet
C	11 feet
D	8 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 match the relatively low feed point impedance to 50 ohms
D	To increase the front-to-back ratio

33. - G9D05

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

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

34. - G0A04

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

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

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	Insure that all lightning grounds are disconnected
B	Disconnect the incoming utility power feed
C	Insure that the generator is not grounded
D	All of these choices are correct

Figure G7-1