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	17 meters
B	12 meters
C	160 meters
D	30 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	All of these choices are correct
B	The FCC must have declared a state of emergency
C	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
D	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

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	56 kilobaud
B	19.6 kilobaud
C	1200 baud
D	300 baud

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Universal Licensing System
B	A Volunteer Examiner Coordinator
C	The Federal Communications Commission
D	The Wireless Telecommunications Bureau

5. - G1E05

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

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

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
B	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
C	Only one sideband is transmitted; the other sideband and carrier are suppressed
D	Only one sideband and the carrier are transmitted; the other sideband is suppressed

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Except during FCC declared emergencies, no one has priority access to frequencies
B	Nets always have priority
C	QSOs in progress always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	Send slower
B	We have worked before
C	We have already confirmed by card
D	I acknowledge receipt

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The ITU requires a log of all international third party traffic
B	The ITU requires a log of all international contacts
C	The log provides evidence of operation needed to renew a license without retest
D	To help with a reply if the FCC requests information

10. - G2E01

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

Select	Answer
A	LSB
B	DSB
C	CW
D	USB

11. - G3A16

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

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

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Long delayed echoes on the 10-meter band
B	Long skip sky-wave propagation on the 10-meter band
C	Short skip sky-wave propagation on the 10-meter band
D	Severe attenuation of signals on the 10-meter band

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The E layer is unstable during daylight hours
B	The D layer absorbs signals at these frequencies during daylight hours
C	The F layer absorbs signals at these frequencies during daylight hours
D	The F layer is unstable during daylight hours

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

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	Complex impedances can be easily measured
C	Input impedance is much lower
D	Complex waveforms can be measured

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 all ground conductors in series
C	Connect the AC neutral conductor to the ground wire
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 receiver
C	In a transmitter
D	In a conductance bridge

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To increase the "Q" of the antenna
B	To narrow the operating bandwidth of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To reduce high voltage discharge from the tip of the antenna

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of direct current caused by resistance
B	A large spark produced at switch contacts when an inductor is de-energized
C	Opposition to the flow of alternating current caused by capacitance or inductance
D	A property of ideal resistors in AC circuits

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	245 volts
C	346 volts
D	173 volts

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

Select	Answer
A	A resistor in parallel
B	A capacitor in series
C	A resistor in series
D	A capacitor in parallel

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	Comparatively low cost
B	High capacitance for given volume
C	Tight tolerance
D	High stability

23. - G6B14

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

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

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 7
B	Symbol 1
C	Symbol 11
D	Symbol 6

25. - G7B06

What is a shift register?

Select	Answer
A	A digital mixer
B	An array of operational amplifiers used for tri-state arithmetic operations
C	An analog mixer
D	A clocked array of circuits that passes data in steps along the array

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	IF filter
B	Balanced modulator
C	Product detector
D	RF oscillator

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	The RF clipping level
D	Antenna inductance or capacitance

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	3 kHz
B	16 kHz
C	8 kHz
D	5 kHz

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	5
B	The number varies
C	8
D	7

30. - G9A03

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

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

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
C	If the antenna is too high, the pattern becomes unpredictable
D	Antenna height has no effect on the pattern

32. - G9C13

Approximately how long is each side of the driven element of a quad antenna?

Select	Answer
A	1/4 wavelength
B	1/2 wavelength
C	1 wavelength
D	3/4 wavelength

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A vertical antenna
B	A broad-band mobile antenna
C	A helical antenna for space reception
D	A very long and low directional receiving antenna

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Locate the antenna close to your operating position to minimize feed line radiation
B	Make sure the antenna is properly shielded
C	Position the antenna along the edge of a wall to reduce parasitic radiation
D	Make sure that MPE limits are not exceeded in occupied areas

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	Unground the base of the tower
B	All of these choices are correct
C	Notify the electric company that a person will be working on the tower
D	Make sure all circuits that supply power to the tower are locked out and tagged

Figure G7-1