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. - G1A12

Which of the following applies when the FCC rules designate the Amateur Service as a secondary user on a band?

Select	Answer
A	Amateur stations are allowed to use the band only if they do not cause harmful interference to primary users
B	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24 hour use of the band
C	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
D	Amateur stations are allowed to use the band only during emergencies

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	100 watts PEP output
B	10 watts PEP output
C	200 watts PEP output
D	20 watts PEP output

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	2000 watts PEP output
B	1500 watts PEP output
C	1000 watts PEP output
D	200 watts PEP output

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	Possession of a properly obtained telegraphy license
B	An FCC General Class or higher license and VEC accreditation
C	Notification to the FCC that you want to give an examination
D	Receipt of a CSCE for General Class

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	The language being used for the contact
B	Any language recognized by the United Nations
C	English only
D	English, Spanish, French, or German

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Continue your communication because you were on the frequency first
B	Change to a different frequency
C	Acknowledge the station in distress and determine what assistance may be needed
D	Immediately cease all transmissions

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening for novice stations
B	Listening only for a specific station or stations
C	Operating full break-in
D	Closing station now

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the foreign country is a member of the International Amateur Radio Union
B	When the contact is with amateurs in any country as long as the communication is conducted in English
C	Only when the foreign country has a formal third party agreement filed with the FCC
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may be listening on the wrong sideband
B	The mark and space frequencies may be reversed
C	You may have selected the wrong baud rate
D	All of these choices are correct

11. - G3A16

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

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

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Minimum Usable Frequency for communications between two points
B	The Minimum Usable Frequency during a 24 hour period
C	The Maximum Usable Frequency for communications between two points
D	The Maximum Usable Frequency during a 24 hour period

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	The ionospheric layer involved is unstable
C	Ground waves are absorbing much of the signal
D	Energy is scattered into the skip zone through several different radio wave paths

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To slow down received CW signals for better copy
B	To reduce the transmitter power when driving a linear amplifier
C	To reduce signal overload due to strong incoming signals
D	To reduce power consumption when operating from batteries

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	The analyzer can be damaged if measurements outside the ham bands are attempted
B	Connecting the analyzer to an antenna can cause it to absorb harmonics
C	Strong signals from nearby transmitters can affect the accuracy of measurements
D	Permanent damage to the analyzer may occur if it is operated into a high SWR

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To remove noise from received signals
B	To increase antenna gain
C	To provide adequate grounding
D	To increase antenna bandwidth

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 to 14.350 MHz
B	14.347 to 14.647 MHz
C	14.344 to 14.347 MHz
D	14.3455 to 14.3485 MHz

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Operating bandwidth may be very limited
B	Harmonic radiation may increase
C	Short antennas can only receive circularly polarized signals
D	Short antennas are more likely to cause distortion of transmitted signals

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ampere
B	Ohm
C	Siemens
D	Farad

20. - G5B12

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

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

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	10000 ohms
C	0.17 ohms
D	80 ohms

22. - G6A05

What is the approximate junction threshold voltage of a conventional silicon diode?

Select	Answer
A	0.7 volts
B	0.1 volt
C	1.0 volts
D	0.3 volts

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Digital
B	Analog
C	MMIC
D	Programmable Logic

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 1
B	Symbol 6
C	Symbol 4
D	Symbol 7

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 low when either or both inputs are high
C	Output is high when either or both inputs are low
D	Output is high only when 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	Substantially higher
B	About the same
C	Substantially lower
D	Twice the transmission line impedance

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Excessive bandwidth
C	Frequency drift
D	Insufficient bandwidth

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Reactance modulator
B	Multiplier
C	Pre-emphasis network
D	Mixer

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 7-bit code with start, stop and parity bits
B	A code using error detection and correction
C	A code using SELCAL and LISTEN
D	A 5-bit code with additional start and stop bits

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	2.5:1
B	1.25:1
C	You cannot determine SWR from impedance values
D	2:1

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It reaches a maximum at an angle of 45 degrees
B	It increases
C	It decreases
D	It stays the same

32. - G9C13

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

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

33. - G9D01

What does the term NVIS mean as related to antennas?

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

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	A lower transmitter duty cycle permits greater short-term exposure levels
B	High duty cycle transmitters are exempt from RF exposure requirements
C	A higher transmitter duty cycle permits greater short-term exposure levels
D	Low duty cycle transmitters are exempt from RF exposure evaluation requirements

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 16
B	AWG number 12
C	AWG number 20
D	AWG number 8

Figure G7-1