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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	12 meters
C	30 meters
D	60 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	50 feet
B	100 feet
C	300 feet
D	200 feet

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	200 watts PEP output

4. - G1D07

Volunteer Examiners are accredited by what organization?

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

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

6. - G2A08

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

Select	Answer
A	Say "Break Break Break" and wait for a response
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 "QRZ" several times followed by your call sign

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	150 to 500 Hz
B	3 to 6 kHz
C	1 to 3 kHz
D	5 to 50 Hz

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	You are sending too fast
B	I am quitting for the day
C	I am ready to receive messages
D	There is interference on the frequency

9. - G2D03

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

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

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	Backscatter propagation
C	Long Path propagation
D	Overmodulation

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	28 days
B	8 minutes
C	40 hours
D	11 years

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency for communications between two points
B	The Minimum Usable Frequency during a 24 hour period
C	The Minimum Usable Frequency for communications between two points
D	The Maximum Usable Frequency during a 24 hour period

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The communication is during a sudden ionospheric disturbance
B	The signal is heard on a frequency below the Maximum Usable Frequency
C	The signal is heard on a frequency above the Maximum Usable Frequency
D	The communication is during a sunspot maximum

14. - G4A10

What is the purpose of an electronic keyer?

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

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	An external RF oscillator
B	The local oscillator of the transmitter
C	The attenuated RF output of the transmitter
D	The transmitter balanced mixer output

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Connect all ground conductors in series
B	Avoid using lock washers and star washers when making ground connections
C	Connect all ground conductors to a single point
D	Connect the AC neutral conductor to the ground wire

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	Your displayed carrier frequency may be set at the edge of the band
B	At least 3 kHz above the edge of the band
C	At least 3 kHz below the edge of the band
D	At least 1 kHz below 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	Harmonic radiation may increase
D	Short antennas can only receive circularly polarized signals

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance increases

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak-to-peak value
B	The reciprocal of the RMS value
C	The RMS value
D	The peak value

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	5.9 ohms
C	80 ohms
D	10000 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 peak and valley current points
B	Its saturation and cutoff regions
C	Its active region (between the cutoff and saturation regions)
D	Its enhancement and depletion modes

23. - G6B17

What is the general description of a DIN type connector?

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

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	Half the normal output voltage of the power supply
B	Equal to the normal peak output voltage of the power supply
C	Double the normal peak output voltage of the power supply
D	One-quarter the normal output voltage of the power supply

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	A frequency multiplier and a mixer
C	An amplifier and a divider
D	A circulator and a filter operating in a feed-forward loop

26. - G7C02

Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?

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

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Excessive bandwidth
B	Insufficient audio
C	Insufficient bandwidth
D	Frequency drift

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Lower symbol rates require wider bandwidth
B	Symbol rate and bandwidth are not related
C	Higher symbol rates require wider bandwidth
D	Bandwidth is always half the symbol rate

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Varicode
B	Binary
C	Volumetric
D	Viterbi

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR makes it difficult to measure transmission line loss
B	There is no interaction between transmission line loss and SWR
C	If a transmission line is lossy, high SWR will increase the loss
D	High SWR reduces the relative effect of transmission line loss

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	263 feet
C	84 feet
D	131 feet

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
B	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
C	dBi gain figures are 2.15 dB lower then dBd gain figures
D	dBi gain figures are 2.15 dB higher than dBd gain figures

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Wide bandwidth
B	Polarization diversity
C	Higher gain per element than a Yagi antenna
D	Harmonic suppression

34. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Change to a non-polarized antenna with higher gain
B	Take precautions to ensure that the antenna cannot be pointed in their direction
C	Post a warning sign that is clearly visible to the neighbor
D	Use an antenna with a higher front-to-back ratio

35. - G0B05

Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

Select	Answer
A	Current flowing from one or more of the voltage-carrying wires directly to ground
B	Current flowing from one or more of the voltage-carrying wires to the neutral wire
C	Overvoltage on the voltage-carrying wires
D	All of these choices are correct