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. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

Select	Answer
A	60, 20, 17, and 12 meters
B	160, 60, 30, 17, 12, and 10 meters
C	160, 30, 17, 15, 12, and 10 meters
D	160, 80, 40, and 10 meters

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	20 watts PEP output
B	10 watts PEP output
C	200 watts PEP output
D	100 watts PEP output

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	3 kHz
B	1.8 kHz
C	5.6 kHz
D	2.8 kHz

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

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. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Double sideband
B	Frequency modulation
C	Phase modulation
D	Single sideband

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Report the interference to your local Amateur Auxiliary Coordinator
B	Tell the interfering stations to change frequency
C	As a common courtesy, move your contact to another frequency
D	Increase power to overcome interference

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Zero beat my signal
B	Send more slowly
C	Stop sending
D	I am troubled by static

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

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

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	SSB
B	LSB
C	USB
D	DSB

11. - G3A15

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

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

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Send a series of dots on the band and listen for echoes from your signal
B	Listen for signals from an international beacon in the frequency range you plan to use
C	Check the strength of TV signals from Western Europe
D	Check the strength of signals in the MF AM broadcast band

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

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. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better precision for most uses
B	Faster response
C	Better for RF measurements
D	Better for measuring computer circuits

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding shunt inductors to the conductors
B	Adding series capacitors to the conductors
C	Placing a ferrite choke around the cable
D	Adding an additional insulating jacket to the cable

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It increases peak power
B	It reduces harmonic distortion
C	It reduces intermodulation distortion
D	It increases average power

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode greatly increases the efficiency during times of high illumination
B	The diode serves to regulate the charging voltage to prevent overcharge
C	The diode prevents self-discharge of the battery though the panel during times of low or no illumination
D	The diode limits the current flowing from the panel to a safe value

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Siemens
B	Ohm
C	Farad
D	Ampere

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	1.4 watts
B	100 watts
C	400 watts
D	353.5 watts

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	0.22 nF
B	22 nF
C	2.2 nF
D	220 nF

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To reduce grid-to-plate capacitance
B	To decrease plate resistance
C	To increase the control grid resistance
D	To increase efficiency

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A DC power connector rated for currents between 30 and 50 amperes
B	A family of multiple circuit connectors suitable for audio and control signals
C	A special watertight connector for use in marine applications
D	A special connector for microwave interfacing

24. - G7A09

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

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

25. - G7B06

What is a shift register?

Select	Answer
A	A clocked array of circuits that passes data in steps along the array
B	An array of operational amplifiers used for tri-state arithmetic operations
C	An analog mixer
D	A digital mixer

26. - G7C09

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

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

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency shift keying
B	Phase modulation
C	Frequency modulation
D	Amplitude modulation

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	5 kHz
B	16 kHz
C	8 kHz
D	3 kHz

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 checksum overflows
D	The connection is dropped

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	75 ohms
B	100 ohms
C	50 ohms
D	300 ohms

31. - G9B04

What is the radiation pattern of a dipole antenna in free space in the plane of the conductor?

Select	Answer
A	It is a circle (equal radiation in all directions)
B	It is a figure-eight at right angles to the antenna
C	It has a pair of lobes on one side of the antenna and a single lobe on the other side
D	It is a figure-eight off both ends of the antenna

32. - G9C10

Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?

Select	Answer
A	The spacing of each element along the boom
B	All of these choices are correct
C	The number of elements on the boom
D	The physical length of the boom

33. - G9D10

Which of the following describes a Beverage antenna?

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

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	Position the antenna along the edge of a wall to reduce parasitic radiation
C	Make sure that MPE limits are not exceeded in occupied areas
D	Make sure the antenna is properly shielded

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To ensure that dangerous voltages are removed if the cabinet is opened
B	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
C	To shut off the power supply if too much voltage is produced
D	To shut down the unit if it becomes too hot

Figure G7-1