US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	160 meters
B	17 meters
C	30 meters
D	12 meters

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	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
B	The FCC must have declared a state of emergency
C	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
D	All of these choices are correct

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	56 kilobaud
B	300 baud
C	1200 baud
D	19.6 kilobaud

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	There is no age limit
B	21 years
C	18 years
D	12 years

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	No third party traffic maybe be transmitted
C	The station initiating the contact must be under local or remote control
D	The control operator of the interrogating station must hold an Extra Class license

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	The received signal is more natural sounding
B	It allows "hands free" operation
C	It occupies less bandwidth
D	It provides more power output

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

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Repeat everything twice
B	Change frequency
C	Send slower
D	Increase your power

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

Select	Answer
A	To conduct efficient and orderly amateur licensing examinations
B	To provide emergency and public safety communications
C	To coordinate repeaters for efficient and orderly spectrum usage
D	To encourage self-regulation and compliance with the rules by radio amateur operators

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Failure to establish a connection between stations
B	Frequent retries or timeouts
C	All of these choices are correct
D	Long pauses in message transmission

11. - G3A06

What is a geomagnetic storm?

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

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

Select	Answer
A	1,200 miles
B	12,000 miles
C	2,500 miles
D	180 miles

13. - G3C08

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

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

14. - G4A08

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

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

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The presence and amount of phase distortion of a transmitter
B	The presence and amount of amplitude distortion of a transmitter
C	The radiation pattern of an antenna
D	The radiation resistance of an antenna

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Reverse-biased diode
B	Forward-biased diode
C	Bypass capacitor
D	Bypass inductor

17. - G4D06

Where is an S meter found?

Select	Answer
A	In a receiver
B	In a transmitter
C	In a conductance bridge
D	In an SWR bridge

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photon decomposition
B	Photovoltaic conversion
C	Photosynthesis
D	Photon emission

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All of these choices are correct
B	A length of transmission line
C	A Pi-network
D	A transformer

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	8.5 volts
B	24 volts
C	12 volts
D	34 volts

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To insure that the volume of the primary winding is equal to the volume of the secondary winding
B	To accommodate the higher current of the primary
C	To improve the coupling between the primary and secondary
D	To prevent parasitic oscillations due to resistive losses in the primary

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	High capacitance for given volume
B	High stability
C	Tight tolerance
D	Comparatively low cost

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	PL-259
B	RJ-11
C	DB-25
D	Octal

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 5
B	Symbol 2
C	Symbol 1
D	Symbol 4

25. - G7B13

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

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

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Relatively high power output
B	Variable frequency with the stability of a crystal oscillator
C	Wide tuning range and no need for band switching
D	Relatively low power consumption

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	Signal distortion caused by excessive drive
B	Signal distortion caused by insufficient collector current
C	The transmitter's automatic level control (ALC) is properly adjusted
D	The transmitter's carrier is properly suppressed

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	Discriminator
B	VFO
C	Mixer
D	BFO

29. - G8C09

What does the number 31 represent in "PSK31"?

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

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	4:1
B	2:1
C	1:4
D	1:2

31. - G9B06

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

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

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	The radiated signal becomes circularly polarized
B	The polarization of the radiated signal changes from horizontal to vertical
C	The polarization of the radiated signal changes from vertical to horizontal
D	There is no change in polarization

33. - G9D08

Why is a Beverage antenna not used for transmitting?

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

34. - G0A11

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

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

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	All wires
B	Only the two wires carrying voltage
C	Only the ground wire
D	Only the neutral wire

Figure G7-1