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. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	7.500 MHz
B	40.500 MHz
C	7.250 MHz
D	40.200 MHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	Only with Special Temporary Authorization from the FCC
B	To control a space station
C	During a declared communications emergency
D	Only when the information is of a routine, personal nature

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person's home citizenship must be in ITU region 2
B	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
C	The person must hold an FCC granted Amateur Radio license of General Class or above
D	The person must be a resident of the U.S. for a minimum of 5 years

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any messages, as long as the text of the message is recorded in the station log
B	Only messages for other licensed amateurs
C	Any message, as long as the amateur operator is not paid
D	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is listening for a station in Germany
B	The caller is looking for any station outside their own country
C	A general call for any station
D	A distress call

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Any control operator when normal communication systems are operational
B	Only a RACES net control operator
C	A person holding an FCC issued amateur operator license or an appropriate government official
D	Only a person holding an FCC issued amateur operator license

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening only for a specific station or stations
B	Operating full break-in
C	Closing station now
D	Listening for novice stations

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The ITU requires a log of all international contacts
B	To help with a reply if the FCC requests information
C	The ITU requires a log of all international third party traffic
D	The log provides evidence of operation needed to renew a license without retest

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

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. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They pass through the ionosphere
C	They are bent back to the Earth
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 is the highest ionospheric region
C	Because it is the densest ionospheric layer
D	Because it does not absorb radio waves as much as other ionospheric regions

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	Frequent connection timeouts
B	The VOX circuit does not un-key the transmitter
C	The transmitter signal is distorted
D	All of these choices are correct

15. - G4B10

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

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

16. - G4C03

What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?

Select	Answer
A	On-and-off humming or clicking
B	Distorted speech
C	Clearly audible speech
D	A steady hum whenever the transmitter is on the air

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Impedance
C	Received signal strength
D	Conductance

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	The wire gauge of the DC power line to the transceiver
B	FCC rules limiting mobile output power on the 75-meter band
C	"Picket Fencing" signal variation
D	The antenna system

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ampere
B	Watt
C	Ohm
D	Volt

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	34 volts
B	24 volts
C	12 volts
D	8.5 volts

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

Select	Answer
A	0.33 microfarads
B	0.30 microfarads
C	33.3 microfarads
D	300 microfarads

22. - G6A10

Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?

Select	Answer
A	Control grid
B	Screen Grid
C	Heater
D	Trigger electrode

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	An audio connector used in surround-sound installations
B	A small bayonet connector used for data circuits
C	A moisture-resistant RF connector useful to 10 GHz
D	A threaded connector used for hydraulic systems

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	Quartz crystals
C	Transformers and transducers
D	Capacitors and inductors

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the divider
B	The inductance and capacitance in the tank circuit
C	The time delay of the lag circuit
D	The number of stages in the counter

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	Detector
B	Balanced modulator
C	IF amplifier
D	Mixer

27. - G8A05

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

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

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	1800 Hz
B	2300 Hz
C	500 Hz
D	31.5 Hz

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and Off
B	Dot and Dash
C	High and Low
D	Mark and Space

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 the SWR will read artificially low
C	The higher the transmission line loss, the more accurate the SWR measurement will be
D	The higher the transmission line loss, the more the SWR will read artificially high

31. - G9B05

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

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

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. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should limited to 10 feet in height
B	It should not be installed in a wet area
C	It should not be installed higher than you can reach
D	It should be installed such that it is protected against unauthorized access

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