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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	1875 kHz
B	3900 kHz
C	4005 kHz
D	3750 kHz

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be posted on the Internet or published in a national periodical
B	The frequency must be coordinated with the National Beacon Organization
C	A beacon station may not use automatic control
D	There must be no more than one beacon signal transmitting in the same band from the same station location

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Power should be limited as necessary to avoid interference to another radio service on the frequency
B	Effective radiated power cannot exceed 1500 watts
C	Only the minimum power necessary to carry out the desired communications should be used
D	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz

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

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 non-phone segments of the 10-meter or shorter wavelength bands
C	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
D	On any band segment where digital operation is permitted

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 provides more power output
D	It occupies less bandwidth

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Contest operations must always yield to non-contest use of frequencies
B	QSOs in progress always have priority
C	Nets always have priority
D	Except during FCC declared emergencies, no one has priority access to frequencies

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	An operator must activate a manual send/receive switch before and after every transmission
B	Breaking stations send the Morse code prosign BK
C	Automatic keyers are used to send Morse code instead of hand keys
D	Transmitting stations can receive between code characters and elements

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
B	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

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

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Auroras that can reflect VHF signals
B	Improved HF long path propagation
C	Reduced long delayed echoes
D	Higher signal strength for HF signals passing through the polar regions

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Signal strength increased by 3 dB
B	The signal might be cancelled causing severe attenuation
C	A well-defined echo might be heard
D	Periodic fading approximately every 10 seconds

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

Select	Answer
A	The D layer
B	The E layer
C	The F2 layer
D	The F1 layer

14. - G4A03

What is normally meant by operating a transceiver in "split" mode?

Select	Answer
A	The radio is operating at half power
B	The transceiver is operating from an external power source
C	The transmitter is emitting an SSB signal, as opposed to DSB operation
D	The transceiver is set to different transmit and receive frequencies

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Standing wave ratio
B	Antenna front-to-back ratio
C	Radio wave propagation
D	RF interference

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	A wide range of filter bandwidths and shapes can be created
C	The DSP filter is much more effective at VHF frequencies
D	Mixing products are greatly reduced

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 1 kHz above the edge of the segment
B	Your displayed carrier frequency may be set at the edge of the segment
C	At least 3 kHz above the edge of the segment
D	At least 3 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	Operating bandwidth may be very limited
B	Short antennas are more likely to cause distortion of transmitted signals
C	Harmonic radiation may increase
D	Short antennas can only receive circularly polarized signals

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Insert an LC network between the two circuits
B	Reduce the power output of the first circuit
C	Increase the power output of the first circuit
D	Insert a circulator between the two circuits

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

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	Never
B	When the cell is kept warm during the recharging period
C	When a constant current charger is used
D	As long as the voltage has not been allowed to drop below 1.0 volt

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	Type SMA
B	DE-9
C	Type N
D	PL-259

24. - G7A06

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

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

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. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

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

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	Attenuator level
B	Transmit audio or microphone gain
C	Antenna inductance or capacitance
D	The RF clipping level

28. - G8B06

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

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

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It sends the packet back to the transmitting station
B	It requests a change in transmitting protocol
C	It requests the packet be retransmitted
D	It terminates the contact

30. - G9A03

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

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

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

32. - G9C05

How does increasing boom length and adding directors affect a Yagi antenna?

Select	Answer
A	Gain increases
B	Front to side ratio decreases
C	Beamwidth increases
D	Front to back ratio decreases

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Portable direction finding at lower HF frequencies
B	Directional transmitting for low HF bands
C	Directional receiving for low HF bands
D	Portable direction finding at higher HF frequencies

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes radiation poisoning
B	It heats body tissue
C	It cools body tissue
D	It causes the blood count to reach a dangerously low level

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator should be located in a well-ventilated area
B	All of these choices are correct
C	Fuel should be stored near the generator for rapid refueling in case of an emergency
D	The generator must be insulated from ground