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. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

Select	Answer
A	160, 60, 30, 17, 12, and 10 meters
B	160, 30, 17, 15, 12, and 10 meters
C	160, 80, 40, and 10 meters
D	60, 20, 17, and 12 meters

2. - G1B06

When is an amateur station permitted to transmit secret codes?

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

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1500 watts PEP output
B	1000 watts PEP output
C	200 watts PEP output
D	1200 watts PEP output

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
C	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
D	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Locally controlled station
B	Fail-safe digital station
C	Robotically controlled station
D	Automatically controlled digital station

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Double sideband
B	Frequency modulation
C	Phase modulation
D	Single sideband

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All of these choices are correct
B	Check to see if the channel is assigned to another station
C	Identify your station by transmitting your call sign at least 3 times
D	Follow the voluntary band plan for the operating mode you intend to use

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	AR
B	SK
C	KN
D	BK

9. - G2D03

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

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

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may have selected the wrong baud rate
B	You may be listening on the wrong sideband
C	The mark and space frequencies may be reversed
D	All of these choices are correct

11. - G3A16

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

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

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

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

13. - G3C08

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

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

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To increase overall efficiency
C	To reduce distortion due to excessive drive
D	To balance the transmitter audio frequency response

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

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Bypass capacitor
B	Bypass inductor
C	Reverse-biased diode
D	Forward-biased diode

17. - G4D06

Where is an S meter found?

Select	Answer
A	In an SWR bridge
B	In a conductance bridge
C	In a transmitter
D	In a receiver

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	The voltage and current ratings of such systems are not compatible with amateur equipment
B	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
C	A large energy storage system is needed to supply power when the wind is not blowing
D	All of these choices are correct

19. - G5A01

What is impedance?

Select	Answer
A	The inverse of resistance
B	The electric charge stored by a capacitor
C	The opposition to the flow of current in an AC circuit
D	The force of repulsion between two similar electric fields

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1060 watts
B	530 watts
C	1500 watts
D	2120 watts

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	2.2 nF
B	0.22 nF
C	220 nF
D	22 nF

22. - G6A17

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

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

23. - G6B07

Which of the following is an advantage of an LED indicator compared to an incandescent indicator?

Select	Answer
A	Faster response time
B	Lower power consumption
C	Longer life
D	All of these choices are correct

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 7
D	Symbol 6

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	All of these choices are correct
B	CW
C	AM
D	SSB

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	All of the these choices are correct
B	An analog to digital converter
C	A digital processor chip
D	A digital to analog converter

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Greater modulation percentage is obtainable with lower distortion
B	Simpler receiving equipment can be used
C	Available transmitter power can be used more effectively
D	Audio fidelity is improved

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	Discriminator
B	BFO
C	VFO
D	Mixer

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The number of characters that can be represented by PSK31
C	The approximate transmitted symbol rate
D	The version of the PSK protocol

30. - G9A15

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

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

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily increases
B	It steadily decreases
C	It peaks at about 1/8 wavelength above ground
D	It is unaffected by the height above ground

32. - G9C09

How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single 3-element Yagi?

Select	Answer
A	Approximately 3 dB higher
B	Approximately 1.5 dB higher
C	Approximately 9 dB higher
D	Approximately 6 dB higher

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Non-Varying Indicated SWR
B	Nearly Vertical Inductance System
C	Non-Varying Impedance Smoothing
D	Near Vertical Incidence sky-wave

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Wear a radiation badge
B	All of these choices are correct
C	Ensure that you and the antenna structure are grounded
D	Turn off the transmitter and disconnect the feed line

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut down the unit if it becomes too hot
B	To shut off the power supply if too much voltage is produced
C	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
D	To ensure that dangerous voltages are removed if the cabinet is opened

Figure G7-1