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. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	28.550 MHz
B	All of these choices are correct
C	28.350 MHz
D	28.020 MHz

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The FCC must have declared a state of emergency
B	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
C	All of these choices are correct
D	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies

3. - G1C08

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

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

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	A special identifier is not required as long as your General Class license application has been filed with the FCC
B	Whenever you operate using General Class frequency privileges
C	Whenever you operate using Technician frequency privileges
D	Whenever you operate on any amateur frequency

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Every foreign country, unless there is a third party agreement in effect with that country
B	Countries in ITU Region 2
C	Any country which is not a member of the International Amateur Radio Union (IARU)
D	Countries in ITU Region 1

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is the only sideband legal on these frequency bands
B	Because it is fully compatible with an AM detector
C	Lower sideband is more efficient than upper sideband at these frequencies
D	Current amateur practice is to use lower sideband on these frequency bands

7. - G2B01

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

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

8. - G2C08

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

Select	Answer
A	KN
B	SK
C	BK
D	AR

9. - G2D04

Which of the following describes an azimuthal projection map?

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

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Long Path propagation
B	Backscatter propagation
C	Insufficient modulation
D	Overmodulation

11. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth
B	A count of sunspots which is adjusted for solar emissions
C	A measure of solar radiation at 10.7 centimeters wavelength
D	Another name for the American sunspot number

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

13. - G3C03

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

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

14. - G4A12

Which of the following is a common use for the dual VFO feature on a transceiver?

Select	Answer
A	To allow transmitting on two frequencies at once
B	To permit monitoring of two different frequencies
C	To facilitate computer interface
D	To permit full duplex operation, that is transmitting and receiving at the same time

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Determining the impedance of an unknown or unmarked coaxial cable
B	Determining the gain of a directional antenna
C	Measuring the front to back ratio of an antenna
D	Measuring the turns ratio of a power transformer

16. - G4C12

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

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

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 10 times less powerful
B	It is 20 times more powerful
C	It is 20 times less powerful
D	It is 100 times more powerful

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To narrow the operating bandwidth of the antenna
B	To increase the "Q" of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To reduce high voltage discharge from the tip of the antenna

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Watt
B	Ohm
C	Volt
D	Ampere

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	12.2 percent
B	25.9 percent
C	10.9 percent
D	20.5 percent

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

Select	Answer
A	0.07 millihenrys
B	70 millihenrys
C	14.3 millihenrys
D	1000 millihenrys

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase efficiency
B	To reduce grid-to-plate capacitance
C	To increase the control grid resistance
D	To decrease plate resistance

23. - G6B04

What is meant by the term ROM?

Select	Answer
A	Resistant to Overload Memory
B	Random Operational Memory
C	Read Only Memory
D	Resistor Operated Memory

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 11
B	Symbol 1
C	Symbol 5
D	Symbol 4

25. - G7B06

What is a shift register?

Select	Answer
A	An array of operational amplifiers used for tri-state arithmetic operations
B	A clocked array of circuits that passes data in steps along the array
C	An analog mixer
D	A digital mixer

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	RF oscillator
B	Balanced modulator
C	IF filter
D	Product detector

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Radian inversion
B	Angle convolution
C	Phase modulation
D	Phase convolution

28. - G8B09

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

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

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Higher power is needed as compared to RTTY for similar error rates
B	Varicode Error Correction is used to ensure accurate message reception
C	Upper case letters use longer Varicode signals and thus slow down transmission
D	Upper case letters make the signal stronger

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation reaches a maximum at approximately 18 MHz
B	Attenuation is independent of frequency
C	Attenuation decreases
D	Attenuation increases

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	8 feet
B	32 feet
C	24 feet
D	16 feet

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an isometric antenna, dBd refers to a discone antenna
B	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna
C	dBi refers to an isotropic antenna, dBd refers to a dipole antenna
D	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has high losses compared to other types of antennas
B	It has poor directivity
C	Its impedance is too low for effective matching
D	All of these choices are correct

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. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	Lead can contaminate food if hands are not washed carefully after handling the solder
B	Tin in the solder can "cold flow" causing shorts in the circuit
C	RF energy can convert the lead into a poisonous gas
D	High voltages can cause lead-tin solder to disintegrate suddenly

Figure G7-1