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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	1875 kHz
B	3750 kHz
C	3900 kHz
D	4005 kHz

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	A beacon station may not use automatic control
B	The frequency must be posted on the Internet or published in a national periodical
C	The frequency must be coordinated with the National Beacon Organization
D	There must be no more than one beacon signal transmitting in the same band from the same station location

3. - G1C01

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

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must pass the current element 2 exam
B	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
C	They must have a letter from the FCC showing they once held an amateur or commercial license
D	There are no requirements other than being able to show a copy of the expired license

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Only in the non-phone Extra Class segments of the bands
B	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	On any band segment where digital operation is permitted

6. - G2A07

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

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

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

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	AR
B	KN
C	BK
D	SK

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Identification of out of band operation
B	Identification of different call signs
C	Hunters have an opportunity to transmit on non-amateur frequencies
D	Direction finding used to locate stations violating FCC Rules

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	RTTY
B	Winlink
C	ARES
D	Skywarn

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	It enhances propagation on all HF frequencies
B	None, because only areas on the night side of the Earth are affected
C	It disrupts signals on lower frequencies more than those on higher frequencies
D	It disrupts communications via satellite more than direct communications

12. - G3B12

What factor or factors affect the MUF?

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

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

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Minimum plate current without exceeding maximum allowable grid current
B	Highest plate voltage while minimizing grid current
C	Minimum SWR on the antenna
D	Maximum power output without exceeding maximum allowable plate current

15. - G4B12

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

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

16. - G4C07

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

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

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz above the edge of the segment
B	Your displayed carrier frequency may be set at the edge of the segment
C	At least 3 kHz below the edge of the segment
D	At least 1 kHz above the edge of the segment

18. - G4E09

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

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

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Conductance
B	Admittance
C	Reactance
D	Reluctance

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 milliwatts
B	Approximately 11 milliwatts
C	Approximately 11 watts
D	Approximately 61 watts

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

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

22. - G6A13

Why is the polarity of applied voltages important for polarized capacitors?

Select	Answer
A	All of these choices are correct
B	Reverse voltages can destroy the dielectric layer of an electrolytic capacitor
C	The capacitor could overheat and explode
D	Incorrect polarity can cause the capacitor to short-circuit

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Analog
B	Programmable Logic
C	Digital
D	MMIC

24. - G7A07

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

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

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the counter
B	The time delay of the lag circuit
C	The inductance and capacitance in the tank circuit
D	The number of stages in the divider

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	All of the these choices are correct
C	A digital to analog converter
D	A digital processor chip

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. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To allow time for the other station to break in during a transmission
B	All of these choices are correct
C	Some modes have high duty cycles which could exceed the transmitter's average power rating.
D	To aid in tuning your transmitter

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	Encoding reverts to the default character set
B	Packets will be routed incorrectly
C	The connection is dropped
D	The checksum overflows

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	0:0
C	2:1
D	1:1

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	8 feet
C	16 feet
D	32 feet

32. - G9C17

Approximately how long is each leg of a symmetrical delta-loop antenna?

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

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To prevent out of band operation
C	To provide balanced feed point impedance
D	To permit multiband operation

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes the blood count to reach a dangerously low level
B	It causes radiation poisoning
C	It cools body tissue
D	It heats body tissue

35. - G0B08

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

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