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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz
B	The upper frequency end
C	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz
D	The lower frequency end

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	To control a space station
B	Only when the information is of a routine, personal nature
C	During a declared communications emergency
D	Only with Special Temporary Authorization from the FCC

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	General only
B	Technician only
C	General and Technician
D	Extra, General and Technician

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When using a band where the Amateur Service is secondary
B	All of these choices are correct
C	When operating within one mile of an FCC Monitoring Station
D	When a station is transmitting spread spectrum emissions

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

Select	Answer
A	Lower sideband
B	Double sideband
C	Upper sideband
D	Vestigial sideband

7. - G2B11

What frequency should be used to send a distress call?

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

8. - G2C11

What does the Q signal "QRV" mean?

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

9. - G2D04

Which of the following describes an azimuthal projection map?

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

10. - G2E06

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

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

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Degraded high-latitude HF propagation
B	Improved high-latitude HF propagation
C	Improved chances of UHF ducting
D	Improved ground-wave propagation

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency for communications between two points
B	The Longest Universal Function during a 24 hour period
C	The Longest Universal Function for communications between two points
D	The Lowest Usable Frequency during a 24 hour period

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have very large swings in signal strength
B	They have high intelligibility
C	They have a wavering sound
D	All of these choices are correct

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. - G4B08

Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

Select	Answer
A	A field strength meter
B	A Q meter
C	A multimeter
D	An antenna noise bridge

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Reverse-biased diode
B	Bypass inductor
C	Forward-biased diode
D	Bypass capacitor

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It reduces harmonic distortion
B	It increases average power
C	It reduces intermodulation distortion
D	It increases peak power

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.2 VDC
B	1.38 VDC
C	0.5 VDC
D	0.02 VDC

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

20. - G5B03

How many watts of electrical power are used if 400 VDC is supplied to an 800 ohm load?

Select	Answer
A	200 watts
B	0.5 watts
C	400 watts
D	3200 watts

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

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

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase efficiency
B	To decrease plate resistance
C	To increase the control grid resistance
D	To reduce grid-to-plate capacitance

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	RJ-11
B	PL-259
C	Octal
D	DB-25

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A series of DC pulses at the same frequency as the AC input
B	A steady DC voltage
C	A series of DC pulses at twice the frequency of the AC input
D	A sine wave at half the frequency of the AC input

25. - G7B03

Which of the following describes the function of a two input AND gate?

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

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Twice the transmission line impedance
B	About the same
C	Substantially higher
D	Substantially lower

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 excessive drive
C	The transmitter's carrier is properly suppressed
D	Signal distortion caused by insufficient collector current

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It results in the best signal to noise ratio
B	It minimizes power consumption in the receiver
C	It is required by FCC rules
D	It improves impedance matching of the antenna

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	Clover
B	JT9 and JT65
C	RTTY
D	FSK441 and Hellschreiber

30. - G9A11

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 50 ohm impedance?

Select	Answer
A	50:50
B	2:1
C	0:0
D	1:1

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily increases
B	It is unaffected by the height above ground
C	It peaks at about 1/8 wavelength above ground
D	It steadily decreases

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The point of maximum current in a radiating antenna element
C	The maximum voltage standing wave point on a radiating element
D	The direction of maximum radiated field strength from the antenna

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Non-Varying Impedance Smoothing
B	Nearly Vertical Inductance System
C	Near Vertical Incidence sky-wave
D	Non-Varying Indicated SWR

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	All of these choices are correct
B	By measurement of field strength using calibrated equipment
C	By calculation based on FCC OET Bulletin 65
D	By calculation based on computer modeling

35. - G0B13

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

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