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. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	7.500 MHz
B	7.250 MHz
C	40.200 MHz
D	40.500 MHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

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

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

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

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	A portion of the band that has been voluntarily set aside for digital contacts only
B	An FCC rule that allows only digital contacts in that portion of the band
C	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
D	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band

8. - G2C03

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

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

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Call sign of station contacted and the signal report given
B	Band and/or frequency of the contact
C	Date and time of contact
D	All of these choices are correct

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3570 - 3600 kHz
B	3700 - 3750 kHz
C	3775 - 3825 kHz
D	3500 - 3525 kHz

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	8 minutes
B	28 days
C	11 years
D	40 hours

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	No HF radio frequency will support ordinary sky-wave communications over the path
B	Propagation over the path on all HF frequencies is enhanced
C	Double hop propagation along the path is more common
D	HF communications over the path are enhanced

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Scatter
B	Sporadic-E skip
C	Faraday rotation
D	Short-path skip

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 permit monitoring of two different frequencies
D	To allow transmitting on two frequencies at once

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ammeter
B	A signal generator
C	An ohmmeter
D	An oscilloscope

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Connect all equipment grounds together
B	Install a few ferrite beads on the ground wire where it connects to your station
C	Install an RF filter in series with the ground wire
D	Use a ground loop for best conductivity

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Conductance
C	Received signal strength
D	Impedance

18. - G4E01

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

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

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

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	353.5 watts
B	1.4 watts
C	100 watts
D	400 watts

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

Select	Answer
A	70 millihenrys
B	0.07 millihenrys
C	1000 millihenrys
D	14.3 millihenrys

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	Interleaved
B	In line
C	At right angles to each other
D	Parallel to each other

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	MMIC
C	Digital
D	Analog

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	270 degrees
B	90 degrees
C	180 degrees
D	360 degrees

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A circulator and a filter operating in a feed-forward loop
B	An amplifier and a divider
C	A frequency multiplier and a mixer
D	A filter and an amplifier operating in a feedback loop

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

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

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency conversion
C	Frequency transformation
D	Frequency modulation

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Intermediate interference
B	Mixer interference
C	Image response
D	Quadrature noise

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	High and Low
B	Mark and Space
C	On and Off
D	Dot and Dash

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	2:1
B	1:4
C	1:2
D	4:1

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It must be longer than 1 wavelength
B	You may experience RF burns when touching metal objects in your station
C	It is more effective on the lower HF bands than on the higher bands
D	It produces only vertically polarized radiation

32. - G9C04

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

Select	Answer
A	The reflector is normally the longest element
B	The director is normally the longest element
C	The reflector is normally the shortest element
D	All of the elements must be the same length

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A02

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

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

35. - G0B11

Which of the following is good practice for lightning protection grounds?

Select	Answer
A	Lightning grounds must be connected to all ungrounded wiring
B	They must be bonded together with all other grounds
C	They must be bonded to all buried water and gas lines
D	Bends in ground wires must be made as close as possible to a right angle