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. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	20 meters
B	160 meters
C	12 meters
D	30 meters

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Identifying net frequencies
B	Transmission of bulletins of general interest to Amateur Radio licensees
C	Automatic identification of repeaters
D	Observation of propagation and reception

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

4. - G1D04

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

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

5. - G1E01

Which of the following would disqualify a third party from participating in stating a message over an amateur station?

Select	Answer
A	The third party is a licensed amateur
B	The third party is not a U.S. citizen
C	The third party is speaking in a language other than English
D	The third party's amateur license has been revoked and not reinstated

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say "QRZ" several times followed by your call sign
B	Say "CQ" followed by the call sign of either station
C	Say your call sign during a break between transmissions by the other stations
D	Say "Break Break Break" and wait for a response

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. - G2C07

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

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

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	To help with a reply if the FCC requests information
B	The ITU requires a log of all international contacts
C	The ITU requires a log of all international third party traffic
D	The log provides evidence of operation needed to renew a license without retest

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Insufficient modulation
B	Long Path propagation
C	Backscatter propagation
D	Overmodulation

11. - G3A06

What is a geomagnetic storm?

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

12. - G3B06

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

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

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Signals are scattered from the magnetosphere which is not a good reflector
B	Propagations is through ducts in F region which absorb most of the energy
C	Only a small part of the signal energy is scattered into the skip zone
D	Propagation is through ground waves which absorb most of the signal energy

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	VOX operation
C	Computer interface for PSK and RTTY operation
D	Automatic generation of strings of dots and dashes for CW operation

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Complex waveforms can be measured
B	Input impedance is much lower
C	An oscilloscope uses less power
D	Complex impedances can be easily measured

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	The ground wire has high impedance on that frequency
B	The ground rod is resonant
C	Flat braid rather than round wire has been used for the ground wire
D	Insulated wire has been used for the ground wire

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

18. - G4E06

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

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

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ampere
B	Volt
C	Watt
D	Ohm

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 watts
B	Approximately 11 milliwatts
C	Approximately 61 milliwatts
D	Approximately 11 watts

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	10000 ohms
D	5.9 ohms

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its enhancement and depletion modes
B	Its active region (between the cutoff and saturation regions)
C	Its saturation and cutoff regions
D	Its peak and valley current points

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	A threaded connector used for hydraulic systems
B	An audio connector used in surround-sound installations
C	A moisture-resistant RF connector useful to 10 GHz
D	A small bayonet connector used for data circuits

24. - G7A12

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

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

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To keep the carrier on frequency
B	To eliminate self-oscillations
C	To limit the modulation index
D	To cut off the final amplifier during standby periods

26. - G7C09

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

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

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Pulse modulation
C	Multiplex modulation
D	Amplitude modulation

28. - G8B05

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

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

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The approximate transmitted symbol rate
C	The version of the PSK protocol
D	The number of characters that can be represented by PSK31

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation increases
B	Attenuation is independent of frequency
C	Attenuation decreases
D	Attenuation reaches a maximum at approximately 18 MHz

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Shorten the radials
B	Lengthen the radials
C	Slope the radials downward
D	Slope the radials upward

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To match the relatively low feed point impedance to 50 ohms
B	To increase the main lobe gain
C	To increase the front-to-back ratio
D	To match the relatively high feed point impedance to 50 ohms

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has high losses compared to other types of antennas
B	Its impedance is too low for effective matching
C	It has poor directivity
D	All of these choices are correct

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Make sure that MPE limits are not exceeded in occupied areas
B	Make sure the antenna is properly shielded
C	Locate the antenna close to your operating position to minimize feed line radiation
D	Position the antenna along the edge of a wall to reduce parasitic radiation

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	Bends in ground wires must be made as close as possible to a right angle
D	They must be bonded to all buried water and gas lines

Figure G7-1