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 are allowed to use the band only during emergencies
C	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24 hour use of the band
D	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	All of these choices are correct
B	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
C	The FCC must have declared a state of emergency
D	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	365 days
B	For as long as your current license is valid
C	180 days
D	30 days

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. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

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	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
D	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Chirpy or unstable signal
C	Report was read from an S meter rather than estimated
D	Key clicks

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	Direction finding used to locate stations violating FCC Rules
C	Hunters have an opportunity to transmit on non-amateur frequencies
D	Identification of different call signs

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	In the middle of the CW segment, near 14.100 MHz
B	At the top of the SSB phone segment, near 14.325 MHz
C	At the bottom of the slow-scan TV segment, near 14.230 MHz
D	Below the RTTY segment, near 14.070 MHz

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	28 days
B	4 to 8 minutes
C	14 days
D	20 to 40 hours

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are completely absorbed by the ionosphere
B	They pass through the ionosphere
C	They are bent and trapped in the ionosphere to circle the Earth
D	They are bent back to the Earth

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

Select	Answer
A	The D layer
B	The F2 layer
C	The E layer
D	The F1 layer

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	No change will be observed
B	A slow, rhythmic oscillation
C	A pronounced peak
D	A pronounced dip

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Determining the gain of a directional antenna
B	Measuring the front to back ratio of an antenna
C	Determining the impedance of an unknown or unmarked coaxial cable
D	Measuring the turns ratio of a power transformer

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	Mixing products are greatly reduced
C	Fewer digital components are required
D	The DSP filter is much more effective at VHF frequencies

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 20 times more powerful
C	It is 10 times less powerful
D	It is 20 times less powerful

18. - G4E09

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

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

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of direct current caused by resistance
B	A property of ideal resistors in AC circuits
C	A large spark produced at switch contacts when an inductor is de-energized
D	Opposition to the flow of alternating current caused by capacitance or inductance

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	2.00
B	1.414
C	0.707
D	1.00

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	0.17 ohms
B	80 ohms
C	5.9 ohms
D	10000 ohms

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The source is separated from the drain by a thin insulating layer
B	The gate is formed by a back-biased junction
C	The gate is separated from the channel with a thin insulating layer
D	The source is formed by depositing metal on silicon

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Forward Biased
B	At the Zener voltage
C	Reverse Biased
D	Beyond cutoff

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 5
B	Symbol 1
C	Symbol 11
D	Symbol 4

25. - G7B01

Complex digital circuitry can often be replaced by what type of integrated circuit?

Select	Answer
A	Window comparator
B	Charge-coupled device
C	Phase detector
D	Microcontroller

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

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

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 modulation
C	Frequency transformation
D	Frequency conversion

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	500 Hz
B	31.5 Hz
C	2300 Hz
D	1800 Hz

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	FSK441 and Hellschreiber
C	JT9 and JT65
D	RTTY

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	1:1
D	50:50

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	At the center of the antenna
B	Parallel to the antenna element
C	On the surface of the Earth or buried a few inches below the ground
D	As high as possible above the ground

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The driven element must be fed with a balun transformer
B	The reflector element must be approximately 5 percent shorter than the driven element
C	The reflector element must be approximately 5 percent longer than the driven element
D	There must be an open circuit in the driven element at the point opposite the feed point

33. - G9D01

What does the term NVIS mean as related to antennas?

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

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The average amount of power developed by the transmitter over a specific 24 hour period
C	The average time it takes RF radiation to have any long-term effect on the body
D	The total RF exposure averaged over a certain time

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	Make sure all circuits that supply power to the tower are locked out and tagged
C	Notify the electric company that a person will be working on the tower
D	Unground the base of the tower

Figure G7-1