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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	3650 kHz
B	1855 kHz
C	2560 kHz
D	3560 kHz

2. - G1B03

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

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

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	General only
B	Technician only
C	General and Technician
D	Extra, General and Technician

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	When messages are not encrypted
B	Under no circumstances
C	When under automatic control
D	When messages are encrypted

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

Select	Answer
A	Upper sideband
B	Vestigial sideband
C	Double sideband
D	Lower 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	Increase power to overcome interference
C	As a common courtesy, move your contact to another frequency
D	Tell the interfering stations to change frequency

8. - G2C11

What does the Q signal "QRV" mean?

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a particular location
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows accurate land masses

10. - G2E08

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

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

11. - G3A13

What does the A-index indicate?

Select	Answer
A	The long term stability of the Earth's geomagnetic field
B	The solar radio flux at Boulder, Colorado
C	The relative position of sunspots on the surface of the Sun
D	The amount of polarization of the Sun's electric field

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 are completely absorbed by the ionosphere
C	They pass through the ionosphere
D	They are bent and trapped in the ionosphere to circle the Earth

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	All of these choices are correct
B	Because it does not absorb radio waves as much as other ionospheric regions
C	Because it is the densest ionospheric layer
D	Because it is the highest ionospheric region

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	ALC will invert the modulation of the AFSK mode
B	All of these choices are correct
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	Improper action of ALC distorts the signal and can cause spurious emissions

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It improves the resolution of the readings
B	It decreases the loading on circuits being measured
C	It decreases battery consumption in the meter
D	It improves the frequency response

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To provide adequate grounding
B	To increase antenna gain
C	To increase antenna bandwidth
D	To remove noise from received signals

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

18. - G4E09

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

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

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Ampere
C	Ohm
D	Siemens

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It equals the average of each branch current
B	It decreases as more parallel branches are added to the circuit
C	It equals the sum of the currents through each branch
D	It is the sum of the reciprocal of each individual voltage drop

21. - G5C05

If three equal value resistors in series produce 450 ohms, what is the value of each resistor?

Select	Answer
A	175 ohms
B	150 ohms
C	90 ohms
D	1500 ohms

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	At right angles to each other
B	Parallel to each other
C	In line
D	Interleaved

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	Microprocessor
B	NAND Gate
C	Frequency Counter
D	Linear voltage regulator

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	90 degrees
B	270 degrees
C	180 degrees
D	360 degrees

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	3
B	6
C	8
D	16

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	IF amplifier
B	Filter
C	RF amplifier
D	Carrier oscillator

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 conversion
C	Frequency transformation
D	Frequency modulation

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	7
B	8
C	5
D	The number varies

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	1.5:1
B	You cannot determine SWR from impedance values
C	6:1
D	3:1

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It decreases
B	It reaches a maximum at an angle of 45 degrees
C	It increases
D	It stays the same

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

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To provide balanced feed point impedance
B	To prevent out of band operation
C	To notch spurious frequencies
D	To permit multiband operation

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	File an Environmental Impact Statement (EIS-97) with the FCC
B	Secure written permission from your neighbors to operate above the controlled MPE limits
C	All of these choices are correct
D	Take action to prevent human exposure to the excessive RF fields

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Acceptable bandwidth limits
B	Electrical safety inside the ham shack
C	RF exposure limits of the human body
D	Acceptable modulation limits