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	3560 kHz
B	2560 kHz
C	3650 kHz
D	1855 kHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
B	Only when there is no other means of communications readily available
C	Never
D	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis

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	19.6 kilobaud
B	56 kilobaud
C	1200 baud
D	300 baud

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment except 30-meters and 60-meters
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	Only on the Technician band segments until your license arrives in the mail
D	On any General or Technician Class band segment

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	The language being used for the contact
B	Any language recognized by the United Nations
C	English, Spanish, French, or German
D	English only

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 "QRZ" several times followed by your call sign
D	Say your call sign during a break between transmissions by the other stations

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they declare a temporary state of communication emergency
B	Only when all amateur stations are instructed to stop transmitting
C	When the President's War Emergency Powers have been invoked
D	When they seize your equipment for use in disaster communications

8. - G2C10

What does the Q signal "QRN" mean?

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

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

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

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Put the modem or controller in a mode which allows monitoring communications without a connection
B	Unplug the data connector temporarily and see if the channel-busy indication is turned off
C	Send the message: "Is this frequency in use?"
D	Transmit UI packets several times and wait to see if there is a response from another PACTOR station

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	All of these choices are correct.
B	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
C	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
D	A zero sunspot number indicate radio propagation is not possible on any band

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

13. - G3C08

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

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

14. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To prevent stations from interfering with one another
B	To allow time for a warning signal to be sent to other stations
C	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
D	To allow the transmitter power regulators to charge properly

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Transmitter
B	Antenna and feed line
C	All of these choices are correct
D	Receiver

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	High RF voltages on the enclosures of station equipment
B	Overheating of ground straps
C	A ground loop
D	Corrosion of the ground rod

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

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To electrically lengthen a physically short antenna
B	To increase the power handling capacity of a whip antenna
C	To allow automatic band changing
D	To allow remote tuning

19. - G5A02

What is reactance?

Select	Answer
A	A large spark produced at switch contacts when an inductor is de-energized
B	A property of ideal resistors in AC circuits
C	Opposition to the flow of direct current caused by resistance
D	Opposition to the flow of alternating current caused by capacitance or inductance

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

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	3583 picofarads
B	1733 picofarads
C	576.9 nanofarads
D	10.750 nanofarads

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor could overheat
B	The resistor's tolerance value would not be adequate for such a circuit
C	The resistor's internal capacitance would detune the circuit
D	The resistor's inductance could make circuit performance unpredictable

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Power supply and amplifier
B	Amplifier and antenna
C	Computer and transceiver
D	Microphone and transceiver

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 1
B	Symbol 11
C	Symbol 2
D	Symbol 7

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class B
B	Class AB
C	Class C
D	Class A

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

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By changing an oscillator's frequency directly with a digital control signal
B	By keying an FM transmitter with a sub-audible tone
C	By reconfiguring the CW keying input to act as a tone generator
D	By using a transceiver's computer data interface protocol to change frequencies

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It is required by FCC rules
B	It improves impedance matching of the antenna
C	It results in the best signal to noise ratio
D	It minimizes power consumption in the receiver

29. - G8C12

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

Select	Answer
A	Viterbi
B	Binary
C	Varicode
D	Volumetric

30. - G9A15

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	The higher the transmission line loss, the more accurate the SWR measurement will be
C	The higher the transmission line loss, the more the SWR will read artificially high
D	The higher the transmission line loss, the more the SWR will read artificially low

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is too high, the pattern becomes unpredictable
B	Antenna height has no effect on the pattern
C	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Larger diameter elements
B	Closer element spacing
C	Loading coils in series with the element
D	Tapered-diameter elements

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They must be used with an antenna tuner
C	They present low impedance on all design frequencies
D	They must be fed with open wire line

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. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	All of these choices are correct
B	Unground the base of the tower
C	Make sure all circuits that supply power to the tower are locked out and tagged
D	Notify the electric company that a person will be working on the tower

Figure G7-1