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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14005 kHz
B	14305 kHz
C	14405 kHz
D	14105 kHz

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	In conformance with the rules of the IARU
B	In conformance with good engineering and good amateur practice
C	In conformance with Amateur Radio custom
D	All of these choices are correct

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	200 watts PEP output
B	50 watts PEP output
C	1500 watts PEP output
D	An effective radiated power equivalent to 100 watts from a half-wave dipole

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least three General Class or higher VEs must observe the examination
B	At least two General Class or higher VEs must be present
C	At least two General Class or higher VEs must be present, but only one need be Extra Class
D	At least three VEs of Technician Class or higher must observe the examination

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

6. - G2A05

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

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

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	At any time when transmitting in an organized net
B	At any time during an actual emergency
C	Only when transmitting in RACES
D	Only on authorized HF frequencies

8. - G2C11

What does the Q signal "QRV" mean?

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

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
B	You must keep a record of the manufacturer of your equipment and the antenna used
C	You must keep a record of all third party traffic
D	You must keep a record of the date, time, frequency, power level and stations worked

10. - G2E01

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

Select	Answer
A	CW
B	USB
C	DSB
D	LSB

11. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A sudden drop in the solar flux index
B	Ripples in the ionosphere
C	A temporary disturbance in the Earth's magnetosphere
D	A thunderstorm which affects radio propagation

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	Path distance and location
B	Solar radiation and ionospheric disturbances
C	Time of day and season
D	All of these choices are correct

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
B	The long path azimuth of a distant station
C	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
D	The short path azimuth of a distant station

14. - G4A12

Which of the following is a common use for the dual VFO feature on a transceiver?

Select	Answer
A	To facilitate computer interface
B	To permit full duplex operation, that is transmitting and receiving at the same time
C	To allow transmitting on two frequencies at once
D	To permit monitoring of two different frequencies

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It decreases battery consumption in the meter
B	It improves the frequency response
C	It improves the resolution of the readings
D	It decreases the loading on circuits being measured

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A noise limiter
B	A Digital Signal Processor (DSP) filter
C	Balanced mixing
D	Bandpass tuning

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 to 7.181 MHz
B	7.175 to 7.178 MHz
C	7.1765 to 7.1795 MHz
D	7.178 to 7.184 MHz

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	All of these choices are correct
B	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
C	The voltage and current ratings of such systems are not compatible with amateur equipment
D	A large energy storage system is needed to supply power when the wind is not blowing

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ampere
B	Farad
C	Ohm
D	Siemens

20. - G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

Select	Answer
A	625 watts
B	8.75 watts
C	5000 watts
D	2500 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	3583 picofarads
B	10.750 nanofarads
C	576.9 nanofarads
D	1733 picofarads

22. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?

Select	Answer
A	8.5 volts
B	10.5 volts
C	12 volts
D	6 volts

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Military Manufactured Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Multi Megabyte Integrated Circuit

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	Transformers and transducers
C	Capacitors and inductors
D	Quartz crystals

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class AB
B	Class C
C	Class A
D	Class B

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	RF oscillator
D	Product detector

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	Signal distortion caused by insufficient collector current
B	Signal distortion caused by excessive drive
C	The transmitter's carrier is properly suppressed
D	The transmitter's automatic level control (ALC) is properly adjusted

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Symbol rate and bandwidth are not related
B	Higher symbol rates require wider bandwidth
C	Bandwidth is always half the symbol rate
D	Lower symbol rates require wider bandwidth

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	RTTY
C	FSK441 and Hellschreiber
D	JT9 and JT65

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	0:0
B	2:1
C	50:50
D	1:1

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	131 feet
B	84 feet
C	263 feet
D	42 feet

32. - G9C03

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

Select	Answer
A	The director is normally the shortest element
B	Low feed point impedance increases bandwidth
C	The reflector is normally the shortest element
D	The driven element is the longest element

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be used with an antenna tuner
B	They have poor harmonic rejection
C	They must be fed with open wire line
D	They present low impedance on all design frequencies

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	All of these choices are correct
B	Its power density
C	Its frequency
D	Its duty cycle

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 20
B	AWG number 12
C	AWG number 16
D	AWG number 8